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fs/xfs/xfs_bmap.c
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/* |
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* Copyright (c) 2000-2006 Silicon Graphics, Inc. |
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* All Rights Reserved. |
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* |
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* This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation. * |
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* This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "xfs.h" |
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#include "xfs_fs.h" |
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#include "xfs_types.h" |
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#include "xfs_bit.h" |
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#include "xfs_log.h" |
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#include "xfs_inum.h" |
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#include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" |
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#include "xfs_dir2.h" |
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#include "xfs_da_btree.h" |
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#include "xfs_bmap_btree.h" |
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#include "xfs_alloc_btree.h" |
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#include "xfs_ialloc_btree.h" |
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#include "xfs_dir2_sf.h" |
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#include "xfs_attr_sf.h" |
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#include "xfs_dinode.h" |
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#include "xfs_inode.h" |
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#include "xfs_btree.h" #include "xfs_dmapi.h" #include "xfs_mount.h" #include "xfs_ialloc.h" |
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#include "xfs_itable.h" |
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#include "xfs_dir2_data.h" #include "xfs_dir2_leaf.h" #include "xfs_dir2_block.h" |
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#include "xfs_inode_item.h" |
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#include "xfs_extfree_item.h" #include "xfs_alloc.h" #include "xfs_bmap.h" #include "xfs_rtalloc.h" #include "xfs_error.h" |
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#include "xfs_attr_leaf.h" |
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#include "xfs_rw.h" #include "xfs_quota.h" #include "xfs_trans_space.h" #include "xfs_buf_item.h" |
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#include "xfs_filestream.h" |
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#include "xfs_vnodeops.h" |
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#ifdef DEBUG STATIC void xfs_bmap_check_leaf_extents(xfs_btree_cur_t *cur, xfs_inode_t *ip, int whichfork); #endif kmem_zone_t *xfs_bmap_free_item_zone; /* * Prototypes for internal bmap routines. */ /* * Called from xfs_bmap_add_attrfork to handle extents format files. */ STATIC int /* error */ xfs_bmap_add_attrfork_extents( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_fsblock_t *firstblock, /* first block allocated */ xfs_bmap_free_t *flist, /* blocks to free at commit */ int *flags); /* inode logging flags */ /* * Called from xfs_bmap_add_attrfork to handle local format files. */ STATIC int /* error */ xfs_bmap_add_attrfork_local( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_fsblock_t *firstblock, /* first block allocated */ xfs_bmap_free_t *flist, /* blocks to free at commit */ int *flags); /* inode logging flags */ /* |
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* Called by xfs_bmapi to update file extent records and the btree |
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* after allocating space (or doing a delayed allocation). */ STATIC int /* error */ xfs_bmap_add_extent( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ |
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xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
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xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ |
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xfs_extdelta_t *delta, /* Change made to incore extents */ |
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int whichfork, /* data or attr fork */ int rsvd); /* OK to allocate reserved blocks */ /* * Called by xfs_bmap_add_extent to handle cases converting a delayed * allocation to a real allocation. */ STATIC int /* error */ xfs_bmap_add_extent_delay_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ |
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xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
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xfs_filblks_t *dnew, /* new delayed-alloc indirect blocks */ xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ |
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xfs_extdelta_t *delta, /* Change made to incore extents */ |
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int rsvd); /* OK to allocate reserved blocks */ /* * Called by xfs_bmap_add_extent to handle cases converting a hole * to a delayed allocation. */ STATIC int /* error */ xfs_bmap_add_extent_hole_delay( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ |
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xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
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int *logflagsp,/* inode logging flags */ |
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xfs_extdelta_t *delta, /* Change made to incore extents */ |
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int rsvd); /* OK to allocate reserved blocks */ /* * Called by xfs_bmap_add_extent to handle cases converting a hole * to a real allocation. */ STATIC int /* error */ xfs_bmap_add_extent_hole_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t *cur, /* if null, not a btree */ |
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xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
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int *logflagsp, /* inode logging flags */ |
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xfs_extdelta_t *delta, /* Change made to incore extents */ |
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int whichfork); /* data or attr fork */ /* * Called by xfs_bmap_add_extent to handle cases converting an unwritten * allocation to a real allocation or vice versa. */ STATIC int /* error */ xfs_bmap_add_extent_unwritten_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ |
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xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
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int *logflagsp, /* inode logging flags */ xfs_extdelta_t *delta); /* Change made to incore extents */ |
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/* * xfs_bmap_alloc is called by xfs_bmapi to allocate an extent for a file. * It figures out where to ask the underlying allocator to put the new extent. */ STATIC int /* error */ xfs_bmap_alloc( xfs_bmalloca_t *ap); /* bmap alloc argument struct */ /* * Transform a btree format file with only one leaf node, where the * extents list will fit in the inode, into an extents format file. |
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* Since the file extents are already in-core, all we have to do is |
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* give up the space for the btree root and pitch the leaf block. */ STATIC int /* error */ xfs_bmap_btree_to_extents( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_btree_cur_t *cur, /* btree cursor */ int *logflagsp, /* inode logging flags */ int whichfork); /* data or attr fork */ |
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/* |
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* Called by xfs_bmapi to update file extent records and the btree |
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* after removing space (or undoing a delayed allocation). */ STATIC int /* error */ xfs_bmap_del_extent( xfs_inode_t *ip, /* incore inode pointer */ xfs_trans_t *tp, /* current trans pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_bmap_free_t *flist, /* list of extents to be freed */ xfs_btree_cur_t *cur, /* if null, not a btree */ |
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xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
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int *logflagsp,/* inode logging flags */ |
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xfs_extdelta_t *delta, /* Change made to incore extents */ |
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int whichfork, /* data or attr fork */ int rsvd); /* OK to allocate reserved blocks */ /* * Remove the entry "free" from the free item list. Prev points to the * previous entry, unless "free" is the head of the list. */ STATIC void xfs_bmap_del_free( xfs_bmap_free_t *flist, /* free item list header */ xfs_bmap_free_item_t *prev, /* previous item on list, if any */ xfs_bmap_free_item_t *free); /* list item to be freed */ /* |
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* Convert an extents-format file into a btree-format file. * The new file will have a root block (in the inode) and a single child block. */ STATIC int /* error */ xfs_bmap_extents_to_btree( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_fsblock_t *firstblock, /* first-block-allocated */ xfs_bmap_free_t *flist, /* blocks freed in xaction */ xfs_btree_cur_t **curp, /* cursor returned to caller */ int wasdel, /* converting a delayed alloc */ int *logflagsp, /* inode logging flags */ int whichfork); /* data or attr fork */ /* |
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* Convert a local file to an extents file. * This code is sort of bogus, since the file data needs to get * logged so it won't be lost. The bmap-level manipulations are ok, though. */ STATIC int /* error */ xfs_bmap_local_to_extents( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_fsblock_t *firstblock, /* first block allocated in xaction */ xfs_extlen_t total, /* total blocks needed by transaction */ int *logflagsp, /* inode logging flags */ int whichfork); /* data or attr fork */ /* * Search the extents list for the inode, for the extent containing bno. * If bno lies in a hole, point to the next entry. If bno lies past eof, * *eofp will be set, and *prevp will contain the last entry (null if none). * Else, *lastxp will be set to the index of the found * entry; *gotp will contain the entry. */ |
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STATIC xfs_bmbt_rec_host_t * /* pointer to found extent entry */ |
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xfs_bmap_search_extents( xfs_inode_t *ip, /* incore inode pointer */ xfs_fileoff_t bno, /* block number searched for */ int whichfork, /* data or attr fork */ int *eofp, /* out: end of file found */ xfs_extnum_t *lastxp, /* out: last extent index */ xfs_bmbt_irec_t *gotp, /* out: extent entry found */ xfs_bmbt_irec_t *prevp); /* out: previous extent entry found */ |
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/* * Check the last inode extent to determine whether this allocation will result * in blocks being allocated at the end of the file. When we allocate new data * blocks at the end of the file which do not start at the previous data block, * we will try to align the new blocks at stripe unit boundaries. */ STATIC int /* error */ xfs_bmap_isaeof( xfs_inode_t *ip, /* incore inode pointer */ xfs_fileoff_t off, /* file offset in fsblocks */ int whichfork, /* data or attribute fork */ char *aeof); /* return value */ |
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#ifdef XFS_BMAP_TRACE /* |
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* Add bmap trace entry prior to a call to xfs_iext_remove. |
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*/ STATIC void xfs_bmap_trace_delete( |
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const char *fname, /* function name */ |
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char *desc, /* operation description */ xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* index of entry(entries) deleted */ xfs_extnum_t cnt, /* count of entries deleted, 1 or 2 */ int whichfork); /* data or attr fork */ /* |
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* Add bmap trace entry prior to a call to xfs_iext_insert, or |
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* reading in the extents list from the disk (in the btree). */ STATIC void xfs_bmap_trace_insert( |
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const char *fname, /* function name */ |
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char *desc, /* operation description */ xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* index of entry(entries) inserted */ xfs_extnum_t cnt, /* count of entries inserted, 1 or 2 */ xfs_bmbt_irec_t *r1, /* inserted record 1 */ xfs_bmbt_irec_t *r2, /* inserted record 2 or null */ int whichfork); /* data or attr fork */ /* |
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* Add bmap trace entry after updating an extent record in place. |
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*/ STATIC void xfs_bmap_trace_post_update( |
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const char *fname, /* function name */ |
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char *desc, /* operation description */ xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* index of entry updated */ int whichfork); /* data or attr fork */ /* |
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* Add bmap trace entry prior to updating an extent record in place. |
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*/ STATIC void xfs_bmap_trace_pre_update( |
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const char *fname, /* function name */ |
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char *desc, /* operation description */ xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* index of entry to be updated */ int whichfork); /* data or attr fork */ |
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#define XFS_BMAP_TRACE_DELETE(d,ip,i,c,w) \ |
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xfs_bmap_trace_delete(__func__,d,ip,i,c,w) |
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#define XFS_BMAP_TRACE_INSERT(d,ip,i,c,r1,r2,w) \ |
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xfs_bmap_trace_insert(__func__,d,ip,i,c,r1,r2,w) |
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#define XFS_BMAP_TRACE_POST_UPDATE(d,ip,i,w) \ |
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xfs_bmap_trace_post_update(__func__,d,ip,i,w) |
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#define XFS_BMAP_TRACE_PRE_UPDATE(d,ip,i,w) \ |
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xfs_bmap_trace_pre_update(__func__,d,ip,i,w) |
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#else |
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#define XFS_BMAP_TRACE_DELETE(d,ip,i,c,w) #define XFS_BMAP_TRACE_INSERT(d,ip,i,c,r1,r2,w) #define XFS_BMAP_TRACE_POST_UPDATE(d,ip,i,w) #define XFS_BMAP_TRACE_PRE_UPDATE(d,ip,i,w) |
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#endif /* XFS_BMAP_TRACE */ /* * Compute the worst-case number of indirect blocks that will be used * for ip's delayed extent of length "len". */ STATIC xfs_filblks_t xfs_bmap_worst_indlen( xfs_inode_t *ip, /* incore inode pointer */ xfs_filblks_t len); /* delayed extent length */ #ifdef DEBUG /* * Perform various validation checks on the values being returned * from xfs_bmapi(). */ STATIC void xfs_bmap_validate_ret( xfs_fileoff_t bno, xfs_filblks_t len, int flags, xfs_bmbt_irec_t *mval, int nmap, int ret_nmap); #else #define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) #endif /* DEBUG */ #if defined(XFS_RW_TRACE) STATIC void xfs_bunmap_trace( xfs_inode_t *ip, xfs_fileoff_t bno, xfs_filblks_t len, int flags, inst_t *ra); #else #define xfs_bunmap_trace(ip, bno, len, flags, ra) #endif /* XFS_RW_TRACE */ STATIC int xfs_bmap_count_tree( xfs_mount_t *mp, xfs_trans_t *tp, |
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xfs_ifork_t *ifp, |
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xfs_fsblock_t blockno, int levelin, int *count); STATIC int xfs_bmap_count_leaves( |
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xfs_ifork_t *ifp, xfs_extnum_t idx, |
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int numrecs, int *count); |
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STATIC int xfs_bmap_disk_count_leaves( |
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xfs_extnum_t idx, xfs_bmbt_block_t *block, |
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int numrecs, int *count); |
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/* * Bmap internal routines. */ /* * Called from xfs_bmap_add_attrfork to handle btree format files. */ STATIC int /* error */ xfs_bmap_add_attrfork_btree( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_fsblock_t *firstblock, /* first block allocated */ xfs_bmap_free_t *flist, /* blocks to free at commit */ int *flags) /* inode logging flags */ { xfs_btree_cur_t *cur; /* btree cursor */ int error; /* error return value */ xfs_mount_t *mp; /* file system mount struct */ int stat; /* newroot status */ mp = ip->i_mount; if (ip->i_df.if_broot_bytes <= XFS_IFORK_DSIZE(ip)) *flags |= XFS_ILOG_DBROOT; else { cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip, XFS_DATA_FORK); cur->bc_private.b.flist = flist; cur->bc_private.b.firstblock = *firstblock; if ((error = xfs_bmbt_lookup_ge(cur, 0, 0, 0, &stat))) goto error0; ASSERT(stat == 1); /* must be at least one entry */ if ((error = xfs_bmbt_newroot(cur, flags, &stat))) goto error0; if (stat == 0) { xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); return XFS_ERROR(ENOSPC); } *firstblock = cur->bc_private.b.firstblock; cur->bc_private.b.allocated = 0; xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); } return 0; error0: xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); return error; } /* * Called from xfs_bmap_add_attrfork to handle extents format files. */ STATIC int /* error */ xfs_bmap_add_attrfork_extents( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_fsblock_t *firstblock, /* first block allocated */ xfs_bmap_free_t *flist, /* blocks to free at commit */ int *flags) /* inode logging flags */ { xfs_btree_cur_t *cur; /* bmap btree cursor */ int error; /* error return value */ if (ip->i_d.di_nextents * sizeof(xfs_bmbt_rec_t) <= XFS_IFORK_DSIZE(ip)) return 0; cur = NULL; error = xfs_bmap_extents_to_btree(tp, ip, firstblock, flist, &cur, 0, flags, XFS_DATA_FORK); if (cur) { cur->bc_private.b.allocated = 0; xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); } return error; } /* * Called from xfs_bmap_add_attrfork to handle local format files. */ STATIC int /* error */ xfs_bmap_add_attrfork_local( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_fsblock_t *firstblock, /* first block allocated */ xfs_bmap_free_t *flist, /* blocks to free at commit */ int *flags) /* inode logging flags */ { xfs_da_args_t dargs; /* args for dir/attr code */ int error; /* error return value */ xfs_mount_t *mp; /* mount structure pointer */ if (ip->i_df.if_bytes <= XFS_IFORK_DSIZE(ip)) return 0; if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { mp = ip->i_mount; memset(&dargs, 0, sizeof(dargs)); dargs.dp = ip; dargs.firstblock = firstblock; dargs.flist = flist; dargs.total = mp->m_dirblkfsbs; dargs.whichfork = XFS_DATA_FORK; dargs.trans = tp; |
f6c2d1fa6 [XFS] Remove vers... |
495 |
error = xfs_dir2_sf_to_block(&dargs); |
1da177e4c Linux-2.6.12-rc2 |
496 497 498 499 500 501 502 |
} else error = xfs_bmap_local_to_extents(tp, ip, firstblock, 1, flags, XFS_DATA_FORK); return error; } /* |
4eea22f01 [XFS] 929045 5673... |
503 |
* Called by xfs_bmapi to update file extent records and the btree |
1da177e4c Linux-2.6.12-rc2 |
504 505 506 507 508 509 510 |
* after allocating space (or doing a delayed allocation). */ STATIC int /* error */ xfs_bmap_add_extent( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ |
4eea22f01 [XFS] 929045 5673... |
511 |
xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
1da177e4c Linux-2.6.12-rc2 |
512 513 514 |
xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ |
3e57ecf64 [XFS] Add paramet... |
515 |
xfs_extdelta_t *delta, /* Change made to incore extents */ |
1da177e4c Linux-2.6.12-rc2 |
516 517 518 519 520 521 522 |
int whichfork, /* data or attr fork */ int rsvd) /* OK to use reserved data blocks */ { xfs_btree_cur_t *cur; /* btree cursor or null */ xfs_filblks_t da_new; /* new count del alloc blocks used */ xfs_filblks_t da_old; /* old count del alloc blocks used */ int error; /* error return value */ |
1da177e4c Linux-2.6.12-rc2 |
523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 |
xfs_ifork_t *ifp; /* inode fork ptr */ int logflags; /* returned value */ xfs_extnum_t nextents; /* number of extents in file now */ XFS_STATS_INC(xs_add_exlist); cur = *curp; ifp = XFS_IFORK_PTR(ip, whichfork); nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); ASSERT(idx <= nextents); da_old = da_new = 0; error = 0; /* * This is the first extent added to a new/empty file. * Special case this one, so other routines get to assume there are * already extents in the list. */ if (nextents == 0) { |
3a59c94c4 [XFS] Clean up fu... |
540 541 |
XFS_BMAP_TRACE_INSERT("insert empty", ip, 0, 1, new, NULL, whichfork); |
4eea22f01 [XFS] 929045 5673... |
542 |
xfs_iext_insert(ifp, 0, 1, new); |
1da177e4c Linux-2.6.12-rc2 |
543 544 545 546 547 548 549 |
ASSERT(cur == NULL); ifp->if_lastex = 0; if (!ISNULLSTARTBLOCK(new->br_startblock)) { XFS_IFORK_NEXT_SET(ip, whichfork, 1); logflags = XFS_ILOG_CORE | XFS_ILOG_FEXT(whichfork); } else logflags = 0; |
3e57ecf64 [XFS] Add paramet... |
550 551 552 553 554 555 556 557 558 |
/* DELTA: single new extent */ if (delta) { if (delta->xed_startoff > new->br_startoff) delta->xed_startoff = new->br_startoff; if (delta->xed_blockcount < new->br_startoff + new->br_blockcount) delta->xed_blockcount = new->br_startoff + new->br_blockcount; } |
1da177e4c Linux-2.6.12-rc2 |
559 560 561 562 563 564 565 566 |
} /* * Any kind of new delayed allocation goes here. */ else if (ISNULLSTARTBLOCK(new->br_startblock)) { if (cur) ASSERT((cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL) == 0); |
e9ed9d224 [XFS] remove more... |
567 |
if ((error = xfs_bmap_add_extent_hole_delay(ip, idx, new, |
3e57ecf64 [XFS] Add paramet... |
568 |
&logflags, delta, rsvd))) |
1da177e4c Linux-2.6.12-rc2 |
569 570 571 572 573 574 575 576 577 578 |
goto done; } /* * Real allocation off the end of the file. */ else if (idx == nextents) { if (cur) ASSERT((cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL) == 0); if ((error = xfs_bmap_add_extent_hole_real(ip, idx, cur, new, |
3e57ecf64 [XFS] Add paramet... |
579 |
&logflags, delta, whichfork))) |
1da177e4c Linux-2.6.12-rc2 |
580 581 582 583 584 585 586 |
goto done; } else { xfs_bmbt_irec_t prev; /* old extent at offset idx */ /* * Get the record referred to by idx. */ |
4eea22f01 [XFS] 929045 5673... |
587 |
xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), &prev); |
1da177e4c Linux-2.6.12-rc2 |
588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 |
/* * If it's a real allocation record, and the new allocation ends * after the start of the referred to record, then we're filling * in a delayed or unwritten allocation with a real one, or * converting real back to unwritten. */ if (!ISNULLSTARTBLOCK(new->br_startblock) && new->br_startoff + new->br_blockcount > prev.br_startoff) { if (prev.br_state != XFS_EXT_UNWRITTEN && ISNULLSTARTBLOCK(prev.br_startblock)) { da_old = STARTBLOCKVAL(prev.br_startblock); if (cur) ASSERT(cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL); if ((error = xfs_bmap_add_extent_delay_real(ip, idx, &cur, new, &da_new, first, flist, |
3e57ecf64 [XFS] Add paramet... |
604 |
&logflags, delta, rsvd))) |
1da177e4c Linux-2.6.12-rc2 |
605 606 607 608 |
goto done; } else if (new->br_state == XFS_EXT_NORM) { ASSERT(new->br_state == XFS_EXT_NORM); if ((error = xfs_bmap_add_extent_unwritten_real( |
3e57ecf64 [XFS] Add paramet... |
609 |
ip, idx, &cur, new, &logflags, delta))) |
1da177e4c Linux-2.6.12-rc2 |
610 611 612 613 |
goto done; } else { ASSERT(new->br_state == XFS_EXT_UNWRITTEN); if ((error = xfs_bmap_add_extent_unwritten_real( |
3e57ecf64 [XFS] Add paramet... |
614 |
ip, idx, &cur, new, &logflags, delta))) |
1da177e4c Linux-2.6.12-rc2 |
615 616 617 618 619 620 621 622 623 624 625 626 |
goto done; } ASSERT(*curp == cur || *curp == NULL); } /* * Otherwise we're filling in a hole with an allocation. */ else { if (cur) ASSERT((cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL) == 0); if ((error = xfs_bmap_add_extent_hole_real(ip, idx, cur, |
3e57ecf64 [XFS] Add paramet... |
627 |
new, &logflags, delta, whichfork))) |
1da177e4c Linux-2.6.12-rc2 |
628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 |
goto done; } } ASSERT(*curp == cur || *curp == NULL); /* * Convert to a btree if necessary. */ if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && XFS_IFORK_NEXTENTS(ip, whichfork) > ifp->if_ext_max) { int tmp_logflags; /* partial log flag return val */ ASSERT(cur == NULL); error = xfs_bmap_extents_to_btree(ip->i_transp, ip, first, flist, &cur, da_old > 0, &tmp_logflags, whichfork); logflags |= tmp_logflags; if (error) goto done; } /* * Adjust for changes in reserved delayed indirect blocks. * Nothing to do for disk quotas here. */ if (da_old || da_new) { xfs_filblks_t nblks; nblks = da_new; if (cur) nblks += cur->bc_private.b.allocated; ASSERT(nblks <= da_old); if (nblks < da_old) xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS, |
20f4ebf2b [XFS] Make growfs... |
660 |
(int64_t)(da_old - nblks), rsvd); |
1da177e4c Linux-2.6.12-rc2 |
661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 |
} /* * Clear out the allocated field, done with it now in any case. */ if (cur) { cur->bc_private.b.allocated = 0; *curp = cur; } done: #ifdef DEBUG if (!error) xfs_bmap_check_leaf_extents(*curp, ip, whichfork); #endif *logflagsp = logflags; return error; } /* * Called by xfs_bmap_add_extent to handle cases converting a delayed * allocation to a real allocation. */ STATIC int /* error */ xfs_bmap_add_extent_delay_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ |
4eea22f01 [XFS] 929045 5673... |
687 |
xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
1da177e4c Linux-2.6.12-rc2 |
688 689 690 691 |
xfs_filblks_t *dnew, /* new delayed-alloc indirect blocks */ xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ |
3e57ecf64 [XFS] Add paramet... |
692 |
xfs_extdelta_t *delta, /* Change made to incore extents */ |
1da177e4c Linux-2.6.12-rc2 |
693 694 |
int rsvd) /* OK to use reserved data block allocation */ { |
1da177e4c Linux-2.6.12-rc2 |
695 696 |
xfs_btree_cur_t *cur; /* btree cursor */ int diff; /* temp value */ |
a6f64d4ae [XFS] split ondis... |
697 |
xfs_bmbt_rec_host_t *ep; /* extent entry for idx */ |
1da177e4c Linux-2.6.12-rc2 |
698 |
int error; /* error return value */ |
1da177e4c Linux-2.6.12-rc2 |
699 |
int i; /* temp state */ |
4eea22f01 [XFS] 929045 5673... |
700 |
xfs_ifork_t *ifp; /* inode fork pointer */ |
1da177e4c Linux-2.6.12-rc2 |
701 702 703 704 705 |
xfs_fileoff_t new_endoff; /* end offset of new entry */ xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ /* left is 0, right is 1, prev is 2 */ int rval=0; /* return value (logging flags) */ int state = 0;/* state bits, accessed thru macros */ |
3e57ecf64 [XFS] Add paramet... |
706 707 |
xfs_filblks_t temp=0; /* value for dnew calculations */ xfs_filblks_t temp2=0;/* value for dnew calculations */ |
1da177e4c Linux-2.6.12-rc2 |
708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 |
int tmp_rval; /* partial logging flags */ enum { /* bit number definitions for state */ LEFT_CONTIG, RIGHT_CONTIG, LEFT_FILLING, RIGHT_FILLING, LEFT_DELAY, RIGHT_DELAY, LEFT_VALID, RIGHT_VALID }; #define LEFT r[0] #define RIGHT r[1] #define PREV r[2] #define MASK(b) (1 << (b)) #define MASK2(a,b) (MASK(a) | MASK(b)) #define MASK3(a,b,c) (MASK2(a,b) | MASK(c)) #define MASK4(a,b,c,d) (MASK3(a,b,c) | MASK(d)) #define STATE_SET(b,v) ((v) ? (state |= MASK(b)) : (state &= ~MASK(b))) #define STATE_TEST(b) (state & MASK(b)) #define STATE_SET_TEST(b,v) ((v) ? ((state |= MASK(b)), 1) : \ ((state &= ~MASK(b)), 0)) #define SWITCH_STATE \ (state & MASK4(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG)) /* * Set up a bunch of variables to make the tests simpler. */ cur = *curp; |
4eea22f01 [XFS] 929045 5673... |
734 735 |
ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); ep = xfs_iext_get_ext(ifp, idx); |
1da177e4c Linux-2.6.12-rc2 |
736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 |
xfs_bmbt_get_all(ep, &PREV); new_endoff = new->br_startoff + new->br_blockcount; ASSERT(PREV.br_startoff <= new->br_startoff); ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); /* * Set flags determining what part of the previous delayed allocation * extent is being replaced by a real allocation. */ STATE_SET(LEFT_FILLING, PREV.br_startoff == new->br_startoff); STATE_SET(RIGHT_FILLING, PREV.br_startoff + PREV.br_blockcount == new_endoff); /* * Check and set flags if this segment has a left neighbor. * Don't set contiguous if the combined extent would be too large. */ if (STATE_SET_TEST(LEFT_VALID, idx > 0)) { |
4eea22f01 [XFS] 929045 5673... |
752 |
xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &LEFT); |
1da177e4c Linux-2.6.12-rc2 |
753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 |
STATE_SET(LEFT_DELAY, ISNULLSTARTBLOCK(LEFT.br_startblock)); } STATE_SET(LEFT_CONTIG, STATE_TEST(LEFT_VALID) && !STATE_TEST(LEFT_DELAY) && LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && LEFT.br_state == new->br_state && LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN); /* * Check and set flags if this segment has a right neighbor. * Don't set contiguous if the combined extent would be too large. * Also check for all-three-contiguous being too large. */ if (STATE_SET_TEST(RIGHT_VALID, idx < ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t) - 1)) { |
4eea22f01 [XFS] 929045 5673... |
769 |
xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx + 1), &RIGHT); |
1da177e4c Linux-2.6.12-rc2 |
770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 |
STATE_SET(RIGHT_DELAY, ISNULLSTARTBLOCK(RIGHT.br_startblock)); } STATE_SET(RIGHT_CONTIG, STATE_TEST(RIGHT_VALID) && !STATE_TEST(RIGHT_DELAY) && new_endoff == RIGHT.br_startoff && new->br_startblock + new->br_blockcount == RIGHT.br_startblock && new->br_state == RIGHT.br_state && new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && ((state & MASK3(LEFT_CONTIG, LEFT_FILLING, RIGHT_FILLING)) != MASK3(LEFT_CONTIG, LEFT_FILLING, RIGHT_FILLING) || LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN)); error = 0; /* * Switch out based on the FILLING and CONTIG state bits. */ switch (SWITCH_STATE) { case MASK4(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG): /* * Filling in all of a previously delayed allocation extent. * The left and right neighbors are both contiguous with new. */ |
3a59c94c4 [XFS] Clean up fu... |
794 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|LC|RC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
795 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
796 |
xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), |
1da177e4c Linux-2.6.12-rc2 |
797 798 |
LEFT.br_blockcount + PREV.br_blockcount + RIGHT.br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
799 |
XFS_BMAP_TRACE_POST_UPDATE("LF|RF|LC|RC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
800 |
XFS_DATA_FORK); |
3a59c94c4 [XFS] Clean up fu... |
801 |
XFS_BMAP_TRACE_DELETE("LF|RF|LC|RC", ip, idx, 2, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
802 |
xfs_iext_remove(ifp, idx, 2); |
1da177e4c Linux-2.6.12-rc2 |
803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 |
ip->i_df.if_lastex = idx - 1; ip->i_d.di_nextents--; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, RIGHT.br_startblock, RIGHT.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_delete(cur, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_decrement(cur, 0, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, LEFT.br_startblock, LEFT.br_blockcount + PREV.br_blockcount + RIGHT.br_blockcount, LEFT.br_state))) goto done; } *dnew = 0; |
3e57ecf64 [XFS] Add paramet... |
828 829 830 831 832 |
/* DELTA: Three in-core extents are replaced by one. */ temp = LEFT.br_startoff; temp2 = LEFT.br_blockcount + PREV.br_blockcount + RIGHT.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
833 834 835 836 837 838 839 |
break; case MASK3(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG): /* * Filling in all of a previously delayed allocation extent. * The left neighbor is contiguous, the right is not. */ |
3a59c94c4 [XFS] Clean up fu... |
840 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|LC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
841 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
842 |
xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), |
1da177e4c Linux-2.6.12-rc2 |
843 |
LEFT.br_blockcount + PREV.br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
844 |
XFS_BMAP_TRACE_POST_UPDATE("LF|RF|LC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
845 846 |
XFS_DATA_FORK); ip->i_df.if_lastex = idx - 1; |
3a59c94c4 [XFS] Clean up fu... |
847 |
XFS_BMAP_TRACE_DELETE("LF|RF|LC", ip, idx, 1, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
848 |
xfs_iext_remove(ifp, idx, 1); |
1da177e4c Linux-2.6.12-rc2 |
849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 |
if (cur == NULL) rval = XFS_ILOG_DEXT; else { rval = 0; if ((error = xfs_bmbt_lookup_eq(cur, LEFT.br_startoff, LEFT.br_startblock, LEFT.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, LEFT.br_startblock, LEFT.br_blockcount + PREV.br_blockcount, LEFT.br_state))) goto done; } *dnew = 0; |
3e57ecf64 [XFS] Add paramet... |
865 866 867 868 |
/* DELTA: Two in-core extents are replaced by one. */ temp = LEFT.br_startoff; temp2 = LEFT.br_blockcount + PREV.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
869 870 871 872 873 874 875 |
break; case MASK3(LEFT_FILLING, RIGHT_FILLING, RIGHT_CONTIG): /* * Filling in all of a previously delayed allocation extent. * The right neighbor is contiguous, the left is not. */ |
3a59c94c4 [XFS] Clean up fu... |
876 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|RC", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
877 878 879 |
xfs_bmbt_set_startblock(ep, new->br_startblock); xfs_bmbt_set_blockcount(ep, PREV.br_blockcount + RIGHT.br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
880 |
XFS_BMAP_TRACE_POST_UPDATE("LF|RF|RC", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
881 |
ip->i_df.if_lastex = idx; |
3a59c94c4 [XFS] Clean up fu... |
882 |
XFS_BMAP_TRACE_DELETE("LF|RF|RC", ip, idx + 1, 1, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
883 |
xfs_iext_remove(ifp, idx + 1, 1); |
1da177e4c Linux-2.6.12-rc2 |
884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 |
if (cur == NULL) rval = XFS_ILOG_DEXT; else { rval = 0; if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, RIGHT.br_startblock, RIGHT.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, PREV.br_startoff, new->br_startblock, PREV.br_blockcount + RIGHT.br_blockcount, PREV.br_state))) goto done; } *dnew = 0; |
3e57ecf64 [XFS] Add paramet... |
900 901 902 903 |
/* DELTA: Two in-core extents are replaced by one. */ temp = PREV.br_startoff; temp2 = PREV.br_blockcount + RIGHT.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
904 905 906 907 908 909 910 911 |
break; case MASK2(LEFT_FILLING, RIGHT_FILLING): /* * Filling in all of a previously delayed allocation extent. * Neither the left nor right neighbors are contiguous with * the new one. */ |
3a59c94c4 [XFS] Clean up fu... |
912 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|RF", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
913 |
xfs_bmbt_set_startblock(ep, new->br_startblock); |
3a59c94c4 [XFS] Clean up fu... |
914 |
XFS_BMAP_TRACE_POST_UPDATE("LF|RF", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 |
ip->i_df.if_lastex = idx; ip->i_d.di_nextents++; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, new->br_startblock, new->br_blockcount, &i))) goto done; ASSERT(i == 0); cur->bc_rec.b.br_state = XFS_EXT_NORM; if ((error = xfs_bmbt_insert(cur, &i))) goto done; ASSERT(i == 1); } *dnew = 0; |
3e57ecf64 [XFS] Add paramet... |
932 933 934 |
/* DELTA: The in-core extent described by new changed type. */ temp = new->br_startoff; temp2 = new->br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
935 936 937 938 939 940 941 |
break; case MASK2(LEFT_FILLING, LEFT_CONTIG): /* * Filling in the first part of a previous delayed allocation. * The left neighbor is contiguous. */ |
3a59c94c4 [XFS] Clean up fu... |
942 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|LC", ip, idx - 1, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
943 |
xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), |
1da177e4c Linux-2.6.12-rc2 |
944 945 946 |
LEFT.br_blockcount + new->br_blockcount); xfs_bmbt_set_startoff(ep, PREV.br_startoff + new->br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
947 |
XFS_BMAP_TRACE_POST_UPDATE("LF|LC", ip, idx - 1, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
948 |
temp = PREV.br_blockcount - new->br_blockcount; |
3a59c94c4 [XFS] Clean up fu... |
949 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|LC", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 |
xfs_bmbt_set_blockcount(ep, temp); ip->i_df.if_lastex = idx - 1; if (cur == NULL) rval = XFS_ILOG_DEXT; else { rval = 0; if ((error = xfs_bmbt_lookup_eq(cur, LEFT.br_startoff, LEFT.br_startblock, LEFT.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, LEFT.br_startblock, LEFT.br_blockcount + new->br_blockcount, LEFT.br_state))) goto done; } temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), STARTBLOCKVAL(PREV.br_startblock)); xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); |
3a59c94c4 [XFS] Clean up fu... |
971 |
XFS_BMAP_TRACE_POST_UPDATE("LF|LC", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
972 |
*dnew = temp; |
3e57ecf64 [XFS] Add paramet... |
973 974 975 976 |
/* DELTA: The boundary between two in-core extents moved. */ temp = LEFT.br_startoff; temp2 = LEFT.br_blockcount + PREV.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
977 978 979 980 981 982 983 |
break; case MASK(LEFT_FILLING): /* * Filling in the first part of a previous delayed allocation. * The left neighbor is not contiguous. */ |
3a59c94c4 [XFS] Clean up fu... |
984 |
XFS_BMAP_TRACE_PRE_UPDATE("LF", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
985 986 987 |
xfs_bmbt_set_startoff(ep, new_endoff); temp = PREV.br_blockcount - new->br_blockcount; xfs_bmbt_set_blockcount(ep, temp); |
3a59c94c4 [XFS] Clean up fu... |
988 |
XFS_BMAP_TRACE_INSERT("LF", ip, idx, 1, new, NULL, |
1da177e4c Linux-2.6.12-rc2 |
989 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
990 |
xfs_iext_insert(ifp, idx, 1, new); |
1da177e4c Linux-2.6.12-rc2 |
991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 |
ip->i_df.if_lastex = idx; ip->i_d.di_nextents++; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, new->br_startblock, new->br_blockcount, &i))) goto done; ASSERT(i == 0); cur->bc_rec.b.br_state = XFS_EXT_NORM; if ((error = xfs_bmbt_insert(cur, &i))) goto done; ASSERT(i == 1); } if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS && ip->i_d.di_nextents > ip->i_df.if_ext_max) { error = xfs_bmap_extents_to_btree(ip->i_transp, ip, first, flist, &cur, 1, &tmp_rval, XFS_DATA_FORK); rval |= tmp_rval; if (error) goto done; } temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), STARTBLOCKVAL(PREV.br_startblock) - (cur ? cur->bc_private.b.allocated : 0)); |
4eea22f01 [XFS] 929045 5673... |
1019 |
ep = xfs_iext_get_ext(ifp, idx + 1); |
1da177e4c Linux-2.6.12-rc2 |
1020 |
xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); |
3a59c94c4 [XFS] Clean up fu... |
1021 |
XFS_BMAP_TRACE_POST_UPDATE("LF", ip, idx + 1, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1022 |
*dnew = temp; |
3e57ecf64 [XFS] Add paramet... |
1023 1024 1025 |
/* DELTA: One in-core extent is split in two. */ temp = PREV.br_startoff; temp2 = PREV.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1026 1027 1028 1029 1030 1031 1032 1033 |
break; case MASK2(RIGHT_FILLING, RIGHT_CONTIG): /* * Filling in the last part of a previous delayed allocation. * The right neighbor is contiguous with the new allocation. */ temp = PREV.br_blockcount - new->br_blockcount; |
3a59c94c4 [XFS] Clean up fu... |
1034 1035 |
XFS_BMAP_TRACE_PRE_UPDATE("RF|RC", ip, idx, XFS_DATA_FORK); XFS_BMAP_TRACE_PRE_UPDATE("RF|RC", ip, idx + 1, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1036 |
xfs_bmbt_set_blockcount(ep, temp); |
4eea22f01 [XFS] 929045 5673... |
1037 1038 |
xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, idx + 1), new->br_startoff, new->br_startblock, |
1da177e4c Linux-2.6.12-rc2 |
1039 1040 |
new->br_blockcount + RIGHT.br_blockcount, RIGHT.br_state); |
3a59c94c4 [XFS] Clean up fu... |
1041 |
XFS_BMAP_TRACE_POST_UPDATE("RF|RC", ip, idx + 1, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 |
ip->i_df.if_lastex = idx + 1; if (cur == NULL) rval = XFS_ILOG_DEXT; else { rval = 0; if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, RIGHT.br_startblock, RIGHT.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, new->br_startoff, new->br_startblock, new->br_blockcount + RIGHT.br_blockcount, RIGHT.br_state))) goto done; } temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), STARTBLOCKVAL(PREV.br_startblock)); xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); |
3a59c94c4 [XFS] Clean up fu... |
1062 |
XFS_BMAP_TRACE_POST_UPDATE("RF|RC", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1063 |
*dnew = temp; |
3e57ecf64 [XFS] Add paramet... |
1064 1065 1066 1067 |
/* DELTA: The boundary between two in-core extents moved. */ temp = PREV.br_startoff; temp2 = PREV.br_blockcount + RIGHT.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1068 1069 1070 1071 1072 1073 1074 1075 |
break; case MASK(RIGHT_FILLING): /* * Filling in the last part of a previous delayed allocation. * The right neighbor is not contiguous. */ temp = PREV.br_blockcount - new->br_blockcount; |
3a59c94c4 [XFS] Clean up fu... |
1076 |
XFS_BMAP_TRACE_PRE_UPDATE("RF", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1077 |
xfs_bmbt_set_blockcount(ep, temp); |
3a59c94c4 [XFS] Clean up fu... |
1078 1079 |
XFS_BMAP_TRACE_INSERT("RF", ip, idx + 1, 1, new, NULL, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1080 |
xfs_iext_insert(ifp, idx + 1, 1, new); |
1da177e4c Linux-2.6.12-rc2 |
1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 |
ip->i_df.if_lastex = idx + 1; ip->i_d.di_nextents++; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, new->br_startblock, new->br_blockcount, &i))) goto done; ASSERT(i == 0); cur->bc_rec.b.br_state = XFS_EXT_NORM; if ((error = xfs_bmbt_insert(cur, &i))) goto done; ASSERT(i == 1); } if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS && ip->i_d.di_nextents > ip->i_df.if_ext_max) { error = xfs_bmap_extents_to_btree(ip->i_transp, ip, first, flist, &cur, 1, &tmp_rval, XFS_DATA_FORK); rval |= tmp_rval; if (error) goto done; } temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), STARTBLOCKVAL(PREV.br_startblock) - (cur ? cur->bc_private.b.allocated : 0)); |
4eea22f01 [XFS] 929045 5673... |
1109 |
ep = xfs_iext_get_ext(ifp, idx); |
1da177e4c Linux-2.6.12-rc2 |
1110 |
xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); |
3a59c94c4 [XFS] Clean up fu... |
1111 |
XFS_BMAP_TRACE_POST_UPDATE("RF", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1112 |
*dnew = temp; |
3e57ecf64 [XFS] Add paramet... |
1113 1114 1115 |
/* DELTA: One in-core extent is split in two. */ temp = PREV.br_startoff; temp2 = PREV.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1116 1117 1118 1119 1120 1121 1122 1123 1124 |
break; case 0: /* * Filling in the middle part of a previous delayed allocation. * Contiguity is impossible here. * This case is avoided almost all the time. */ temp = new->br_startoff - PREV.br_startoff; |
3a59c94c4 [XFS] Clean up fu... |
1125 |
XFS_BMAP_TRACE_PRE_UPDATE("0", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1126 1127 |
xfs_bmbt_set_blockcount(ep, temp); r[0] = *new; |
d2133717d [XFS] Fix uniniti... |
1128 1129 |
r[1].br_state = PREV.br_state; r[1].br_startblock = 0; |
1da177e4c Linux-2.6.12-rc2 |
1130 1131 1132 |
r[1].br_startoff = new_endoff; temp2 = PREV.br_startoff + PREV.br_blockcount - new_endoff; r[1].br_blockcount = temp2; |
3a59c94c4 [XFS] Clean up fu... |
1133 |
XFS_BMAP_TRACE_INSERT("0", ip, idx + 1, 2, &r[0], &r[1], |
1da177e4c Linux-2.6.12-rc2 |
1134 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1135 |
xfs_iext_insert(ifp, idx + 1, 2, &r[0]); |
1da177e4c Linux-2.6.12-rc2 |
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 |
ip->i_df.if_lastex = idx + 1; ip->i_d.di_nextents++; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, new->br_startblock, new->br_blockcount, &i))) goto done; ASSERT(i == 0); cur->bc_rec.b.br_state = XFS_EXT_NORM; if ((error = xfs_bmbt_insert(cur, &i))) goto done; ASSERT(i == 1); } if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS && ip->i_d.di_nextents > ip->i_df.if_ext_max) { error = xfs_bmap_extents_to_btree(ip->i_transp, ip, first, flist, &cur, 1, &tmp_rval, XFS_DATA_FORK); rval |= tmp_rval; if (error) goto done; } temp = xfs_bmap_worst_indlen(ip, temp); temp2 = xfs_bmap_worst_indlen(ip, temp2); diff = (int)(temp + temp2 - STARTBLOCKVAL(PREV.br_startblock) - (cur ? cur->bc_private.b.allocated : 0)); if (diff > 0 && |
20f4ebf2b [XFS] Make growfs... |
1166 |
xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd)) { |
1da177e4c Linux-2.6.12-rc2 |
1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 |
/* * Ick gross gag me with a spoon. */ ASSERT(0); /* want to see if this ever happens! */ while (diff > 0) { if (temp) { temp--; diff--; if (!diff || !xfs_mod_incore_sb(ip->i_mount, |
20f4ebf2b [XFS] Make growfs... |
1177 |
XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd)) |
1da177e4c Linux-2.6.12-rc2 |
1178 1179 1180 1181 1182 1183 1184 |
break; } if (temp2) { temp2--; diff--; if (!diff || !xfs_mod_incore_sb(ip->i_mount, |
20f4ebf2b [XFS] Make growfs... |
1185 |
XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd)) |
1da177e4c Linux-2.6.12-rc2 |
1186 1187 1188 1189 |
break; } } } |
4eea22f01 [XFS] 929045 5673... |
1190 |
ep = xfs_iext_get_ext(ifp, idx); |
1da177e4c Linux-2.6.12-rc2 |
1191 |
xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); |
3a59c94c4 [XFS] Clean up fu... |
1192 1193 |
XFS_BMAP_TRACE_POST_UPDATE("0", ip, idx, XFS_DATA_FORK); XFS_BMAP_TRACE_PRE_UPDATE("0", ip, idx + 2, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1194 1195 |
xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, idx + 2), NULLSTARTBLOCK((int)temp2)); |
3a59c94c4 [XFS] Clean up fu... |
1196 |
XFS_BMAP_TRACE_POST_UPDATE("0", ip, idx + 2, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1197 |
*dnew = temp + temp2; |
3e57ecf64 [XFS] Add paramet... |
1198 1199 1200 |
/* DELTA: One in-core extent is split in three. */ temp = PREV.br_startoff; temp2 = PREV.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 |
break; case MASK3(LEFT_FILLING, LEFT_CONTIG, RIGHT_CONTIG): case MASK3(RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG): case MASK2(LEFT_FILLING, RIGHT_CONTIG): case MASK2(RIGHT_FILLING, LEFT_CONTIG): case MASK2(LEFT_CONTIG, RIGHT_CONTIG): case MASK(LEFT_CONTIG): case MASK(RIGHT_CONTIG): /* * These cases are all impossible. */ ASSERT(0); } *curp = cur; |
3e57ecf64 [XFS] Add paramet... |
1216 1217 1218 1219 1220 1221 1222 |
if (delta) { temp2 += temp; if (delta->xed_startoff > temp) delta->xed_startoff = temp; if (delta->xed_blockcount < temp2) delta->xed_blockcount = temp2; } |
1da177e4c Linux-2.6.12-rc2 |
1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 |
done: *logflagsp = rval; return error; #undef LEFT #undef RIGHT #undef PREV #undef MASK #undef MASK2 #undef MASK3 #undef MASK4 #undef STATE_SET #undef STATE_TEST #undef STATE_SET_TEST #undef SWITCH_STATE } /* * Called by xfs_bmap_add_extent to handle cases converting an unwritten * allocation to a real allocation or vice versa. */ STATIC int /* error */ xfs_bmap_add_extent_unwritten_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ |
4eea22f01 [XFS] 929045 5673... |
1248 |
xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
3e57ecf64 [XFS] Add paramet... |
1249 1250 |
int *logflagsp, /* inode logging flags */ xfs_extdelta_t *delta) /* Change made to incore extents */ |
1da177e4c Linux-2.6.12-rc2 |
1251 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1252 |
xfs_btree_cur_t *cur; /* btree cursor */ |
a6f64d4ae [XFS] split ondis... |
1253 |
xfs_bmbt_rec_host_t *ep; /* extent entry for idx */ |
1da177e4c Linux-2.6.12-rc2 |
1254 |
int error; /* error return value */ |
1da177e4c Linux-2.6.12-rc2 |
1255 |
int i; /* temp state */ |
4eea22f01 [XFS] 929045 5673... |
1256 |
xfs_ifork_t *ifp; /* inode fork pointer */ |
1da177e4c Linux-2.6.12-rc2 |
1257 1258 1259 1260 1261 1262 1263 |
xfs_fileoff_t new_endoff; /* end offset of new entry */ xfs_exntst_t newext; /* new extent state */ xfs_exntst_t oldext; /* old extent state */ xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ /* left is 0, right is 1, prev is 2 */ int rval=0; /* return value (logging flags) */ int state = 0;/* state bits, accessed thru macros */ |
3e57ecf64 [XFS] Add paramet... |
1264 1265 |
xfs_filblks_t temp=0; xfs_filblks_t temp2=0; |
1da177e4c Linux-2.6.12-rc2 |
1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 |
enum { /* bit number definitions for state */ LEFT_CONTIG, RIGHT_CONTIG, LEFT_FILLING, RIGHT_FILLING, LEFT_DELAY, RIGHT_DELAY, LEFT_VALID, RIGHT_VALID }; #define LEFT r[0] #define RIGHT r[1] #define PREV r[2] #define MASK(b) (1 << (b)) #define MASK2(a,b) (MASK(a) | MASK(b)) #define MASK3(a,b,c) (MASK2(a,b) | MASK(c)) #define MASK4(a,b,c,d) (MASK3(a,b,c) | MASK(d)) #define STATE_SET(b,v) ((v) ? (state |= MASK(b)) : (state &= ~MASK(b))) #define STATE_TEST(b) (state & MASK(b)) #define STATE_SET_TEST(b,v) ((v) ? ((state |= MASK(b)), 1) : \ ((state &= ~MASK(b)), 0)) #define SWITCH_STATE \ (state & MASK4(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG)) /* * Set up a bunch of variables to make the tests simpler. */ error = 0; cur = *curp; |
4eea22f01 [XFS] 929045 5673... |
1292 1293 |
ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); ep = xfs_iext_get_ext(ifp, idx); |
1da177e4c Linux-2.6.12-rc2 |
1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 |
xfs_bmbt_get_all(ep, &PREV); newext = new->br_state; oldext = (newext == XFS_EXT_UNWRITTEN) ? XFS_EXT_NORM : XFS_EXT_UNWRITTEN; ASSERT(PREV.br_state == oldext); new_endoff = new->br_startoff + new->br_blockcount; ASSERT(PREV.br_startoff <= new->br_startoff); ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); /* * Set flags determining what part of the previous oldext allocation * extent is being replaced by a newext allocation. */ STATE_SET(LEFT_FILLING, PREV.br_startoff == new->br_startoff); STATE_SET(RIGHT_FILLING, PREV.br_startoff + PREV.br_blockcount == new_endoff); /* * Check and set flags if this segment has a left neighbor. * Don't set contiguous if the combined extent would be too large. */ if (STATE_SET_TEST(LEFT_VALID, idx > 0)) { |
4eea22f01 [XFS] 929045 5673... |
1314 |
xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &LEFT); |
1da177e4c Linux-2.6.12-rc2 |
1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 |
STATE_SET(LEFT_DELAY, ISNULLSTARTBLOCK(LEFT.br_startblock)); } STATE_SET(LEFT_CONTIG, STATE_TEST(LEFT_VALID) && !STATE_TEST(LEFT_DELAY) && LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && LEFT.br_state == newext && LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN); /* * Check and set flags if this segment has a right neighbor. * Don't set contiguous if the combined extent would be too large. * Also check for all-three-contiguous being too large. */ if (STATE_SET_TEST(RIGHT_VALID, idx < ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t) - 1)) { |
4eea22f01 [XFS] 929045 5673... |
1331 |
xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx + 1), &RIGHT); |
1da177e4c Linux-2.6.12-rc2 |
1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 |
STATE_SET(RIGHT_DELAY, ISNULLSTARTBLOCK(RIGHT.br_startblock)); } STATE_SET(RIGHT_CONTIG, STATE_TEST(RIGHT_VALID) && !STATE_TEST(RIGHT_DELAY) && new_endoff == RIGHT.br_startoff && new->br_startblock + new->br_blockcount == RIGHT.br_startblock && newext == RIGHT.br_state && new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && ((state & MASK3(LEFT_CONTIG, LEFT_FILLING, RIGHT_FILLING)) != MASK3(LEFT_CONTIG, LEFT_FILLING, RIGHT_FILLING) || LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN)); /* * Switch out based on the FILLING and CONTIG state bits. */ switch (SWITCH_STATE) { case MASK4(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG): /* * Setting all of a previous oldext extent to newext. * The left and right neighbors are both contiguous with new. */ |
3a59c94c4 [XFS] Clean up fu... |
1355 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|LC|RC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
1356 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1357 |
xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), |
1da177e4c Linux-2.6.12-rc2 |
1358 1359 |
LEFT.br_blockcount + PREV.br_blockcount + RIGHT.br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
1360 |
XFS_BMAP_TRACE_POST_UPDATE("LF|RF|LC|RC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
1361 |
XFS_DATA_FORK); |
3a59c94c4 [XFS] Clean up fu... |
1362 |
XFS_BMAP_TRACE_DELETE("LF|RF|LC|RC", ip, idx, 2, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1363 |
xfs_iext_remove(ifp, idx, 2); |
1da177e4c Linux-2.6.12-rc2 |
1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 |
ip->i_df.if_lastex = idx - 1; ip->i_d.di_nextents -= 2; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, RIGHT.br_startblock, RIGHT.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_delete(cur, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_decrement(cur, 0, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_delete(cur, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_decrement(cur, 0, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, LEFT.br_startblock, LEFT.br_blockcount + PREV.br_blockcount + RIGHT.br_blockcount, LEFT.br_state))) goto done; } |
3e57ecf64 [XFS] Add paramet... |
1393 1394 1395 1396 1397 |
/* DELTA: Three in-core extents are replaced by one. */ temp = LEFT.br_startoff; temp2 = LEFT.br_blockcount + PREV.br_blockcount + RIGHT.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1398 1399 1400 1401 1402 1403 1404 |
break; case MASK3(LEFT_FILLING, RIGHT_FILLING, LEFT_CONTIG): /* * Setting all of a previous oldext extent to newext. * The left neighbor is contiguous, the right is not. */ |
3a59c94c4 [XFS] Clean up fu... |
1405 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|LC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
1406 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1407 |
xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), |
1da177e4c Linux-2.6.12-rc2 |
1408 |
LEFT.br_blockcount + PREV.br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
1409 |
XFS_BMAP_TRACE_POST_UPDATE("LF|RF|LC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
1410 1411 |
XFS_DATA_FORK); ip->i_df.if_lastex = idx - 1; |
3a59c94c4 [XFS] Clean up fu... |
1412 |
XFS_BMAP_TRACE_DELETE("LF|RF|LC", ip, idx, 1, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1413 |
xfs_iext_remove(ifp, idx, 1); |
1da177e4c Linux-2.6.12-rc2 |
1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 |
ip->i_d.di_nextents--; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, PREV.br_startblock, PREV.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_delete(cur, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_decrement(cur, 0, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, LEFT.br_startblock, LEFT.br_blockcount + PREV.br_blockcount, LEFT.br_state))) goto done; } |
3e57ecf64 [XFS] Add paramet... |
1436 1437 1438 1439 |
/* DELTA: Two in-core extents are replaced by one. */ temp = LEFT.br_startoff; temp2 = LEFT.br_blockcount + PREV.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1440 1441 1442 1443 1444 1445 1446 |
break; case MASK3(LEFT_FILLING, RIGHT_FILLING, RIGHT_CONTIG): /* * Setting all of a previous oldext extent to newext. * The right neighbor is contiguous, the left is not. */ |
3a59c94c4 [XFS] Clean up fu... |
1447 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|RF|RC", ip, idx, |
1da177e4c Linux-2.6.12-rc2 |
1448 1449 1450 1451 |
XFS_DATA_FORK); xfs_bmbt_set_blockcount(ep, PREV.br_blockcount + RIGHT.br_blockcount); xfs_bmbt_set_state(ep, newext); |
3a59c94c4 [XFS] Clean up fu... |
1452 |
XFS_BMAP_TRACE_POST_UPDATE("LF|RF|RC", ip, idx, |
1da177e4c Linux-2.6.12-rc2 |
1453 1454 |
XFS_DATA_FORK); ip->i_df.if_lastex = idx; |
3a59c94c4 [XFS] Clean up fu... |
1455 |
XFS_BMAP_TRACE_DELETE("LF|RF|RC", ip, idx + 1, 1, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1456 |
xfs_iext_remove(ifp, idx + 1, 1); |
1da177e4c Linux-2.6.12-rc2 |
1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 |
ip->i_d.di_nextents--; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, RIGHT.br_startblock, RIGHT.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_delete(cur, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_decrement(cur, 0, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, new->br_startoff, new->br_startblock, new->br_blockcount + RIGHT.br_blockcount, newext))) goto done; } |
3e57ecf64 [XFS] Add paramet... |
1479 1480 1481 1482 |
/* DELTA: Two in-core extents are replaced by one. */ temp = PREV.br_startoff; temp2 = PREV.br_blockcount + RIGHT.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1483 1484 1485 1486 1487 1488 1489 1490 |
break; case MASK2(LEFT_FILLING, RIGHT_FILLING): /* * Setting all of a previous oldext extent to newext. * Neither the left nor right neighbors are contiguous with * the new one. */ |
3a59c94c4 [XFS] Clean up fu... |
1491 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|RF", ip, idx, |
1da177e4c Linux-2.6.12-rc2 |
1492 1493 |
XFS_DATA_FORK); xfs_bmbt_set_state(ep, newext); |
3a59c94c4 [XFS] Clean up fu... |
1494 |
XFS_BMAP_TRACE_POST_UPDATE("LF|RF", ip, idx, |
1da177e4c Linux-2.6.12-rc2 |
1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 |
XFS_DATA_FORK); ip->i_df.if_lastex = idx; if (cur == NULL) rval = XFS_ILOG_DEXT; else { rval = 0; if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, new->br_startblock, new->br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, new->br_startoff, new->br_startblock, new->br_blockcount, newext))) goto done; } |
3e57ecf64 [XFS] Add paramet... |
1511 1512 1513 |
/* DELTA: The in-core extent described by new changed type. */ temp = new->br_startoff; temp2 = new->br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1514 1515 1516 1517 1518 1519 1520 |
break; case MASK2(LEFT_FILLING, LEFT_CONTIG): /* * Setting the first part of a previous oldext extent to newext. * The left neighbor is contiguous. */ |
3a59c94c4 [XFS] Clean up fu... |
1521 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|LC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
1522 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1523 |
xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), |
1da177e4c Linux-2.6.12-rc2 |
1524 1525 1526 |
LEFT.br_blockcount + new->br_blockcount); xfs_bmbt_set_startoff(ep, PREV.br_startoff + new->br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
1527 |
XFS_BMAP_TRACE_POST_UPDATE("LF|LC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
1528 |
XFS_DATA_FORK); |
3a59c94c4 [XFS] Clean up fu... |
1529 |
XFS_BMAP_TRACE_PRE_UPDATE("LF|LC", ip, idx, |
1da177e4c Linux-2.6.12-rc2 |
1530 1531 1532 1533 1534 |
XFS_DATA_FORK); xfs_bmbt_set_startblock(ep, new->br_startblock + new->br_blockcount); xfs_bmbt_set_blockcount(ep, PREV.br_blockcount - new->br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
1535 |
XFS_BMAP_TRACE_POST_UPDATE("LF|LC", ip, idx, |
1da177e4c Linux-2.6.12-rc2 |
1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 |
XFS_DATA_FORK); ip->i_df.if_lastex = idx - 1; if (cur == NULL) rval = XFS_ILOG_DEXT; else { rval = 0; if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, PREV.br_startblock, PREV.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, PREV.br_startoff + new->br_blockcount, PREV.br_startblock + new->br_blockcount, PREV.br_blockcount - new->br_blockcount, oldext))) goto done; if ((error = xfs_bmbt_decrement(cur, 0, &i))) goto done; if (xfs_bmbt_update(cur, LEFT.br_startoff, LEFT.br_startblock, LEFT.br_blockcount + new->br_blockcount, LEFT.br_state)) goto done; } |
3e57ecf64 [XFS] Add paramet... |
1561 1562 1563 1564 |
/* DELTA: The boundary between two in-core extents moved. */ temp = LEFT.br_startoff; temp2 = LEFT.br_blockcount + PREV.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1565 1566 1567 1568 1569 1570 1571 |
break; case MASK(LEFT_FILLING): /* * Setting the first part of a previous oldext extent to newext. * The left neighbor is not contiguous. */ |
3a59c94c4 [XFS] Clean up fu... |
1572 |
XFS_BMAP_TRACE_PRE_UPDATE("LF", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1573 1574 1575 1576 1577 1578 |
ASSERT(ep && xfs_bmbt_get_state(ep) == oldext); xfs_bmbt_set_startoff(ep, new_endoff); xfs_bmbt_set_blockcount(ep, PREV.br_blockcount - new->br_blockcount); xfs_bmbt_set_startblock(ep, new->br_startblock + new->br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
1579 1580 |
XFS_BMAP_TRACE_POST_UPDATE("LF", ip, idx, XFS_DATA_FORK); XFS_BMAP_TRACE_INSERT("LF", ip, idx, 1, new, NULL, |
1da177e4c Linux-2.6.12-rc2 |
1581 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1582 |
xfs_iext_insert(ifp, idx, 1, new); |
1da177e4c Linux-2.6.12-rc2 |
1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 |
ip->i_df.if_lastex = idx; ip->i_d.di_nextents++; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, PREV.br_startblock, PREV.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, PREV.br_startoff + new->br_blockcount, PREV.br_startblock + new->br_blockcount, PREV.br_blockcount - new->br_blockcount, oldext))) goto done; cur->bc_rec.b = *new; if ((error = xfs_bmbt_insert(cur, &i))) goto done; ASSERT(i == 1); } |
3e57ecf64 [XFS] Add paramet... |
1605 1606 1607 |
/* DELTA: One in-core extent is split in two. */ temp = PREV.br_startoff; temp2 = PREV.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1608 1609 1610 1611 1612 1613 1614 |
break; case MASK2(RIGHT_FILLING, RIGHT_CONTIG): /* * Setting the last part of a previous oldext extent to newext. * The right neighbor is contiguous with the new allocation. */ |
3a59c94c4 [XFS] Clean up fu... |
1615 |
XFS_BMAP_TRACE_PRE_UPDATE("RF|RC", ip, idx, |
1da177e4c Linux-2.6.12-rc2 |
1616 |
XFS_DATA_FORK); |
3a59c94c4 [XFS] Clean up fu... |
1617 |
XFS_BMAP_TRACE_PRE_UPDATE("RF|RC", ip, idx + 1, |
1da177e4c Linux-2.6.12-rc2 |
1618 1619 1620 |
XFS_DATA_FORK); xfs_bmbt_set_blockcount(ep, PREV.br_blockcount - new->br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
1621 |
XFS_BMAP_TRACE_POST_UPDATE("RF|RC", ip, idx, |
1da177e4c Linux-2.6.12-rc2 |
1622 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1623 1624 |
xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, idx + 1), new->br_startoff, new->br_startblock, |
1da177e4c Linux-2.6.12-rc2 |
1625 |
new->br_blockcount + RIGHT.br_blockcount, newext); |
3a59c94c4 [XFS] Clean up fu... |
1626 |
XFS_BMAP_TRACE_POST_UPDATE("RF|RC", ip, idx + 1, |
1da177e4c Linux-2.6.12-rc2 |
1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 |
XFS_DATA_FORK); ip->i_df.if_lastex = idx + 1; if (cur == NULL) rval = XFS_ILOG_DEXT; else { rval = 0; if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, PREV.br_startblock, PREV.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, PREV.br_startoff, PREV.br_startblock, PREV.br_blockcount - new->br_blockcount, oldext))) goto done; if ((error = xfs_bmbt_increment(cur, 0, &i))) goto done; if ((error = xfs_bmbt_update(cur, new->br_startoff, new->br_startblock, new->br_blockcount + RIGHT.br_blockcount, newext))) goto done; } |
3e57ecf64 [XFS] Add paramet... |
1651 1652 1653 1654 |
/* DELTA: The boundary between two in-core extents moved. */ temp = PREV.br_startoff; temp2 = PREV.br_blockcount + RIGHT.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1655 1656 1657 1658 1659 1660 1661 |
break; case MASK(RIGHT_FILLING): /* * Setting the last part of a previous oldext extent to newext. * The right neighbor is not contiguous. */ |
3a59c94c4 [XFS] Clean up fu... |
1662 |
XFS_BMAP_TRACE_PRE_UPDATE("RF", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1663 1664 |
xfs_bmbt_set_blockcount(ep, PREV.br_blockcount - new->br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
1665 1666 1667 |
XFS_BMAP_TRACE_POST_UPDATE("RF", ip, idx, XFS_DATA_FORK); XFS_BMAP_TRACE_INSERT("RF", ip, idx + 1, 1, new, NULL, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1668 |
xfs_iext_insert(ifp, idx + 1, 1, new); |
1da177e4c Linux-2.6.12-rc2 |
1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 |
ip->i_df.if_lastex = idx + 1; ip->i_d.di_nextents++; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, PREV.br_startblock, PREV.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, PREV.br_startoff, PREV.br_startblock, PREV.br_blockcount - new->br_blockcount, oldext))) goto done; if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, new->br_startblock, new->br_blockcount, &i))) goto done; ASSERT(i == 0); cur->bc_rec.b.br_state = XFS_EXT_NORM; if ((error = xfs_bmbt_insert(cur, &i))) goto done; ASSERT(i == 1); } |
3e57ecf64 [XFS] Add paramet... |
1695 1696 1697 |
/* DELTA: One in-core extent is split in two. */ temp = PREV.br_startoff; temp2 = PREV.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1698 1699 1700 1701 1702 1703 1704 1705 |
break; case 0: /* * Setting the middle part of a previous oldext extent to * newext. Contiguity is impossible here. * One extent becomes three extents. */ |
3a59c94c4 [XFS] Clean up fu... |
1706 |
XFS_BMAP_TRACE_PRE_UPDATE("0", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1707 1708 |
xfs_bmbt_set_blockcount(ep, new->br_startoff - PREV.br_startoff); |
3a59c94c4 [XFS] Clean up fu... |
1709 |
XFS_BMAP_TRACE_POST_UPDATE("0", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1710 1711 1712 1713 1714 1715 |
r[0] = *new; r[1].br_startoff = new_endoff; r[1].br_blockcount = PREV.br_startoff + PREV.br_blockcount - new_endoff; r[1].br_startblock = new->br_startblock + new->br_blockcount; r[1].br_state = oldext; |
3a59c94c4 [XFS] Clean up fu... |
1716 |
XFS_BMAP_TRACE_INSERT("0", ip, idx + 1, 2, &r[0], &r[1], |
1da177e4c Linux-2.6.12-rc2 |
1717 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1718 |
xfs_iext_insert(ifp, idx + 1, 2, &r[0]); |
1da177e4c Linux-2.6.12-rc2 |
1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 |
ip->i_df.if_lastex = idx + 1; ip->i_d.di_nextents += 2; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, PREV.br_startblock, PREV.br_blockcount, &i))) goto done; ASSERT(i == 1); /* new right extent - oldext */ if ((error = xfs_bmbt_update(cur, r[1].br_startoff, r[1].br_startblock, r[1].br_blockcount, r[1].br_state))) goto done; /* new left extent - oldext */ PREV.br_blockcount = new->br_startoff - PREV.br_startoff; cur->bc_rec.b = PREV; if ((error = xfs_bmbt_insert(cur, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_increment(cur, 0, &i))) goto done; ASSERT(i == 1); /* new middle extent - newext */ cur->bc_rec.b = *new; if ((error = xfs_bmbt_insert(cur, &i))) goto done; ASSERT(i == 1); } |
3e57ecf64 [XFS] Add paramet... |
1751 1752 1753 |
/* DELTA: One in-core extent is split in three. */ temp = PREV.br_startoff; temp2 = PREV.br_blockcount; |
1da177e4c Linux-2.6.12-rc2 |
1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 |
break; case MASK3(LEFT_FILLING, LEFT_CONTIG, RIGHT_CONTIG): case MASK3(RIGHT_FILLING, LEFT_CONTIG, RIGHT_CONTIG): case MASK2(LEFT_FILLING, RIGHT_CONTIG): case MASK2(RIGHT_FILLING, LEFT_CONTIG): case MASK2(LEFT_CONTIG, RIGHT_CONTIG): case MASK(LEFT_CONTIG): case MASK(RIGHT_CONTIG): /* * These cases are all impossible. */ ASSERT(0); } *curp = cur; |
3e57ecf64 [XFS] Add paramet... |
1769 1770 1771 1772 1773 1774 1775 |
if (delta) { temp2 += temp; if (delta->xed_startoff > temp) delta->xed_startoff = temp; if (delta->xed_blockcount < temp2) delta->xed_blockcount = temp2; } |
1da177e4c Linux-2.6.12-rc2 |
1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 |
done: *logflagsp = rval; return error; #undef LEFT #undef RIGHT #undef PREV #undef MASK #undef MASK2 #undef MASK3 #undef MASK4 #undef STATE_SET #undef STATE_TEST #undef STATE_SET_TEST #undef SWITCH_STATE } /* * Called by xfs_bmap_add_extent to handle cases converting a hole * to a delayed allocation. */ /*ARGSUSED*/ STATIC int /* error */ xfs_bmap_add_extent_hole_delay( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ |
4eea22f01 [XFS] 929045 5673... |
1801 |
xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
1da177e4c Linux-2.6.12-rc2 |
1802 |
int *logflagsp, /* inode logging flags */ |
3e57ecf64 [XFS] Add paramet... |
1803 |
xfs_extdelta_t *delta, /* Change made to incore extents */ |
1da177e4c Linux-2.6.12-rc2 |
1804 1805 |
int rsvd) /* OK to allocate reserved blocks */ { |
a6f64d4ae [XFS] split ondis... |
1806 |
xfs_bmbt_rec_host_t *ep; /* extent record for idx */ |
4eea22f01 [XFS] 929045 5673... |
1807 |
xfs_ifork_t *ifp; /* inode fork pointer */ |
1da177e4c Linux-2.6.12-rc2 |
1808 1809 1810 1811 1812 |
xfs_bmbt_irec_t left; /* left neighbor extent entry */ xfs_filblks_t newlen=0; /* new indirect size */ xfs_filblks_t oldlen=0; /* old indirect size */ xfs_bmbt_irec_t right; /* right neighbor extent entry */ int state; /* state bits, accessed thru macros */ |
3e57ecf64 [XFS] Add paramet... |
1813 1814 |
xfs_filblks_t temp=0; /* temp for indirect calculations */ xfs_filblks_t temp2=0; |
1da177e4c Linux-2.6.12-rc2 |
1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 |
enum { /* bit number definitions for state */ LEFT_CONTIG, RIGHT_CONTIG, LEFT_DELAY, RIGHT_DELAY, LEFT_VALID, RIGHT_VALID }; #define MASK(b) (1 << (b)) #define MASK2(a,b) (MASK(a) | MASK(b)) #define STATE_SET(b,v) ((v) ? (state |= MASK(b)) : (state &= ~MASK(b))) #define STATE_TEST(b) (state & MASK(b)) #define STATE_SET_TEST(b,v) ((v) ? ((state |= MASK(b)), 1) : \ ((state &= ~MASK(b)), 0)) #define SWITCH_STATE (state & MASK2(LEFT_CONTIG, RIGHT_CONTIG)) |
4eea22f01 [XFS] 929045 5673... |
1828 1829 |
ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); ep = xfs_iext_get_ext(ifp, idx); |
1da177e4c Linux-2.6.12-rc2 |
1830 1831 1832 1833 1834 1835 |
state = 0; ASSERT(ISNULLSTARTBLOCK(new->br_startblock)); /* * Check and set flags if this segment has a left neighbor */ if (STATE_SET_TEST(LEFT_VALID, idx > 0)) { |
4eea22f01 [XFS] 929045 5673... |
1836 |
xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &left); |
1da177e4c Linux-2.6.12-rc2 |
1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 |
STATE_SET(LEFT_DELAY, ISNULLSTARTBLOCK(left.br_startblock)); } /* * Check and set flags if the current (right) segment exists. * If it doesn't exist, we're converting the hole at end-of-file. */ if (STATE_SET_TEST(RIGHT_VALID, idx < ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t))) { xfs_bmbt_get_all(ep, &right); STATE_SET(RIGHT_DELAY, ISNULLSTARTBLOCK(right.br_startblock)); } /* * Set contiguity flags on the left and right neighbors. * Don't let extents get too large, even if the pieces are contiguous. */ STATE_SET(LEFT_CONTIG, STATE_TEST(LEFT_VALID) && STATE_TEST(LEFT_DELAY) && left.br_startoff + left.br_blockcount == new->br_startoff && left.br_blockcount + new->br_blockcount <= MAXEXTLEN); STATE_SET(RIGHT_CONTIG, STATE_TEST(RIGHT_VALID) && STATE_TEST(RIGHT_DELAY) && new->br_startoff + new->br_blockcount == right.br_startoff && new->br_blockcount + right.br_blockcount <= MAXEXTLEN && (!STATE_TEST(LEFT_CONTIG) || (left.br_blockcount + new->br_blockcount + right.br_blockcount <= MAXEXTLEN))); /* * Switch out based on the contiguity flags. */ switch (SWITCH_STATE) { case MASK2(LEFT_CONTIG, RIGHT_CONTIG): /* * New allocation is contiguous with delayed allocations * on the left and on the right. |
4eea22f01 [XFS] 929045 5673... |
1873 |
* Merge all three into a single extent record. |
1da177e4c Linux-2.6.12-rc2 |
1874 1875 1876 |
*/ temp = left.br_blockcount + new->br_blockcount + right.br_blockcount; |
3a59c94c4 [XFS] Clean up fu... |
1877 |
XFS_BMAP_TRACE_PRE_UPDATE("LC|RC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
1878 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1879 |
xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), temp); |
1da177e4c Linux-2.6.12-rc2 |
1880 1881 1882 1883 |
oldlen = STARTBLOCKVAL(left.br_startblock) + STARTBLOCKVAL(new->br_startblock) + STARTBLOCKVAL(right.br_startblock); newlen = xfs_bmap_worst_indlen(ip, temp); |
4eea22f01 [XFS] 929045 5673... |
1884 1885 |
xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, idx - 1), NULLSTARTBLOCK((int)newlen)); |
3a59c94c4 [XFS] Clean up fu... |
1886 |
XFS_BMAP_TRACE_POST_UPDATE("LC|RC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
1887 |
XFS_DATA_FORK); |
3a59c94c4 [XFS] Clean up fu... |
1888 |
XFS_BMAP_TRACE_DELETE("LC|RC", ip, idx, 1, XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1889 |
xfs_iext_remove(ifp, idx, 1); |
1da177e4c Linux-2.6.12-rc2 |
1890 |
ip->i_df.if_lastex = idx - 1; |
3e57ecf64 [XFS] Add paramet... |
1891 1892 1893 |
/* DELTA: Two in-core extents were replaced by one. */ temp2 = temp; temp = left.br_startoff; |
1da177e4c Linux-2.6.12-rc2 |
1894 1895 1896 1897 1898 1899 1900 1901 1902 |
break; case MASK(LEFT_CONTIG): /* * New allocation is contiguous with a delayed allocation * on the left. * Merge the new allocation with the left neighbor. */ temp = left.br_blockcount + new->br_blockcount; |
3a59c94c4 [XFS] Clean up fu... |
1903 |
XFS_BMAP_TRACE_PRE_UPDATE("LC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
1904 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1905 |
xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), temp); |
1da177e4c Linux-2.6.12-rc2 |
1906 1907 1908 |
oldlen = STARTBLOCKVAL(left.br_startblock) + STARTBLOCKVAL(new->br_startblock); newlen = xfs_bmap_worst_indlen(ip, temp); |
4eea22f01 [XFS] 929045 5673... |
1909 1910 |
xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, idx - 1), NULLSTARTBLOCK((int)newlen)); |
3a59c94c4 [XFS] Clean up fu... |
1911 |
XFS_BMAP_TRACE_POST_UPDATE("LC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
1912 1913 |
XFS_DATA_FORK); ip->i_df.if_lastex = idx - 1; |
3e57ecf64 [XFS] Add paramet... |
1914 1915 1916 |
/* DELTA: One in-core extent grew into a hole. */ temp2 = temp; temp = left.br_startoff; |
1da177e4c Linux-2.6.12-rc2 |
1917 1918 1919 1920 1921 1922 1923 1924 |
break; case MASK(RIGHT_CONTIG): /* * New allocation is contiguous with a delayed allocation * on the right. * Merge the new allocation with the right neighbor. */ |
3a59c94c4 [XFS] Clean up fu... |
1925 |
XFS_BMAP_TRACE_PRE_UPDATE("RC", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1926 1927 1928 1929 1930 1931 |
temp = new->br_blockcount + right.br_blockcount; oldlen = STARTBLOCKVAL(new->br_startblock) + STARTBLOCKVAL(right.br_startblock); newlen = xfs_bmap_worst_indlen(ip, temp); xfs_bmbt_set_allf(ep, new->br_startoff, NULLSTARTBLOCK((int)newlen), temp, right.br_state); |
3a59c94c4 [XFS] Clean up fu... |
1932 |
XFS_BMAP_TRACE_POST_UPDATE("RC", ip, idx, XFS_DATA_FORK); |
1da177e4c Linux-2.6.12-rc2 |
1933 |
ip->i_df.if_lastex = idx; |
3e57ecf64 [XFS] Add paramet... |
1934 1935 1936 |
/* DELTA: One in-core extent grew into a hole. */ temp2 = temp; temp = new->br_startoff; |
1da177e4c Linux-2.6.12-rc2 |
1937 1938 1939 1940 1941 1942 1943 1944 1945 |
break; case 0: /* * New allocation is not contiguous with another * delayed allocation. * Insert a new entry. */ oldlen = newlen = 0; |
3a59c94c4 [XFS] Clean up fu... |
1946 |
XFS_BMAP_TRACE_INSERT("0", ip, idx, 1, new, NULL, |
1da177e4c Linux-2.6.12-rc2 |
1947 |
XFS_DATA_FORK); |
4eea22f01 [XFS] 929045 5673... |
1948 |
xfs_iext_insert(ifp, idx, 1, new); |
1da177e4c Linux-2.6.12-rc2 |
1949 |
ip->i_df.if_lastex = idx; |
3e57ecf64 [XFS] Add paramet... |
1950 1951 1952 |
/* DELTA: A new in-core extent was added in a hole. */ temp2 = new->br_blockcount; temp = new->br_startoff; |
1da177e4c Linux-2.6.12-rc2 |
1953 1954 1955 1956 1957 |
break; } if (oldlen != newlen) { ASSERT(oldlen > newlen); xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS, |
20f4ebf2b [XFS] Make growfs... |
1958 |
(int64_t)(oldlen - newlen), rsvd); |
1da177e4c Linux-2.6.12-rc2 |
1959 1960 1961 1962 |
/* * Nothing to do for disk quota accounting here. */ } |
3e57ecf64 [XFS] Add paramet... |
1963 1964 1965 1966 1967 1968 1969 |
if (delta) { temp2 += temp; if (delta->xed_startoff > temp) delta->xed_startoff = temp; if (delta->xed_blockcount < temp2) delta->xed_blockcount = temp2; } |
1da177e4c Linux-2.6.12-rc2 |
1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 |
*logflagsp = 0; return 0; #undef MASK #undef MASK2 #undef STATE_SET #undef STATE_TEST #undef STATE_SET_TEST #undef SWITCH_STATE } /* * Called by xfs_bmap_add_extent to handle cases converting a hole * to a real allocation. */ STATIC int /* error */ xfs_bmap_add_extent_hole_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t *cur, /* if null, not a btree */ |
4eea22f01 [XFS] 929045 5673... |
1989 |
xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
1da177e4c Linux-2.6.12-rc2 |
1990 |
int *logflagsp, /* inode logging flags */ |
3e57ecf64 [XFS] Add paramet... |
1991 |
xfs_extdelta_t *delta, /* Change made to incore extents */ |
1da177e4c Linux-2.6.12-rc2 |
1992 1993 |
int whichfork) /* data or attr fork */ { |
a6f64d4ae [XFS] split ondis... |
1994 |
xfs_bmbt_rec_host_t *ep; /* pointer to extent entry ins. point */ |
1da177e4c Linux-2.6.12-rc2 |
1995 |
int error; /* error return value */ |
1da177e4c Linux-2.6.12-rc2 |
1996 1997 1998 1999 |
int i; /* temp state */ xfs_ifork_t *ifp; /* inode fork pointer */ xfs_bmbt_irec_t left; /* left neighbor extent entry */ xfs_bmbt_irec_t right; /* right neighbor extent entry */ |
3e57ecf64 [XFS] Add paramet... |
2000 |
int rval=0; /* return value (logging flags) */ |
1da177e4c Linux-2.6.12-rc2 |
2001 |
int state; /* state bits, accessed thru macros */ |
3e57ecf64 [XFS] Add paramet... |
2002 2003 |
xfs_filblks_t temp=0; xfs_filblks_t temp2=0; |
1da177e4c Linux-2.6.12-rc2 |
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 |
enum { /* bit number definitions for state */ LEFT_CONTIG, RIGHT_CONTIG, LEFT_DELAY, RIGHT_DELAY, LEFT_VALID, RIGHT_VALID }; #define MASK(b) (1 << (b)) #define MASK2(a,b) (MASK(a) | MASK(b)) #define STATE_SET(b,v) ((v) ? (state |= MASK(b)) : (state &= ~MASK(b))) #define STATE_TEST(b) (state & MASK(b)) #define STATE_SET_TEST(b,v) ((v) ? ((state |= MASK(b)), 1) : \ ((state &= ~MASK(b)), 0)) #define SWITCH_STATE (state & MASK2(LEFT_CONTIG, RIGHT_CONTIG)) ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(idx <= ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t)); |
4eea22f01 [XFS] 929045 5673... |
2020 |
ep = xfs_iext_get_ext(ifp, idx); |
1da177e4c Linux-2.6.12-rc2 |
2021 2022 2023 2024 2025 |
state = 0; /* * Check and set flags if this segment has a left neighbor. */ if (STATE_SET_TEST(LEFT_VALID, idx > 0)) { |
4eea22f01 [XFS] 929045 5673... |
2026 |
xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &left); |
1da177e4c Linux-2.6.12-rc2 |
2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 |
STATE_SET(LEFT_DELAY, ISNULLSTARTBLOCK(left.br_startblock)); } /* * Check and set flags if this segment has a current value. * Not true if we're inserting into the "hole" at eof. */ if (STATE_SET_TEST(RIGHT_VALID, idx < ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))) { xfs_bmbt_get_all(ep, &right); STATE_SET(RIGHT_DELAY, ISNULLSTARTBLOCK(right.br_startblock)); } /* * We're inserting a real allocation between "left" and "right". * Set the contiguity flags. Don't let extents get too large. */ STATE_SET(LEFT_CONTIG, STATE_TEST(LEFT_VALID) && !STATE_TEST(LEFT_DELAY) && left.br_startoff + left.br_blockcount == new->br_startoff && left.br_startblock + left.br_blockcount == new->br_startblock && left.br_state == new->br_state && left.br_blockcount + new->br_blockcount <= MAXEXTLEN); STATE_SET(RIGHT_CONTIG, STATE_TEST(RIGHT_VALID) && !STATE_TEST(RIGHT_DELAY) && new->br_startoff + new->br_blockcount == right.br_startoff && new->br_startblock + new->br_blockcount == right.br_startblock && new->br_state == right.br_state && new->br_blockcount + right.br_blockcount <= MAXEXTLEN && (!STATE_TEST(LEFT_CONTIG) || left.br_blockcount + new->br_blockcount + right.br_blockcount <= MAXEXTLEN)); |
3e57ecf64 [XFS] Add paramet... |
2059 |
error = 0; |
1da177e4c Linux-2.6.12-rc2 |
2060 2061 2062 2063 2064 2065 2066 2067 2068 |
/* * Select which case we're in here, and implement it. */ switch (SWITCH_STATE) { case MASK2(LEFT_CONTIG, RIGHT_CONTIG): /* * New allocation is contiguous with real allocations on the * left and on the right. |
4eea22f01 [XFS] 929045 5673... |
2069 |
* Merge all three into a single extent record. |
1da177e4c Linux-2.6.12-rc2 |
2070 |
*/ |
3a59c94c4 [XFS] Clean up fu... |
2071 |
XFS_BMAP_TRACE_PRE_UPDATE("LC|RC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
2072 |
whichfork); |
4eea22f01 [XFS] 929045 5673... |
2073 |
xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), |
1da177e4c Linux-2.6.12-rc2 |
2074 2075 |
left.br_blockcount + new->br_blockcount + right.br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
2076 |
XFS_BMAP_TRACE_POST_UPDATE("LC|RC", ip, idx - 1, |
1da177e4c Linux-2.6.12-rc2 |
2077 |
whichfork); |
3a59c94c4 [XFS] Clean up fu... |
2078 |
XFS_BMAP_TRACE_DELETE("LC|RC", ip, idx, 1, whichfork); |
4eea22f01 [XFS] 929045 5673... |
2079 |
xfs_iext_remove(ifp, idx, 1); |
1da177e4c Linux-2.6.12-rc2 |
2080 2081 2082 2083 |
ifp->if_lastex = idx - 1; XFS_IFORK_NEXT_SET(ip, whichfork, XFS_IFORK_NEXTENTS(ip, whichfork) - 1); if (cur == NULL) { |
3e57ecf64 [XFS] Add paramet... |
2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 |
rval = XFS_ILOG_CORE | XFS_ILOG_FEXT(whichfork); } else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, right.br_startoff, right.br_startblock, right.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_delete(cur, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_decrement(cur, 0, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, left.br_startoff, left.br_startblock, left.br_blockcount + new->br_blockcount + right.br_blockcount, left.br_state))) goto done; |
1da177e4c Linux-2.6.12-rc2 |
2106 |
} |
3e57ecf64 [XFS] Add paramet... |
2107 2108 2109 2110 2111 2112 |
/* DELTA: Two in-core extents were replaced by one. */ temp = left.br_startoff; temp2 = left.br_blockcount + new->br_blockcount + right.br_blockcount; break; |
1da177e4c Linux-2.6.12-rc2 |
2113 2114 2115 2116 2117 2118 2119 |
case MASK(LEFT_CONTIG): /* * New allocation is contiguous with a real allocation * on the left. * Merge the new allocation with the left neighbor. */ |
3a59c94c4 [XFS] Clean up fu... |
2120 |
XFS_BMAP_TRACE_PRE_UPDATE("LC", ip, idx - 1, whichfork); |
4eea22f01 [XFS] 929045 5673... |
2121 |
xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), |
1da177e4c Linux-2.6.12-rc2 |
2122 |
left.br_blockcount + new->br_blockcount); |
3a59c94c4 [XFS] Clean up fu... |
2123 |
XFS_BMAP_TRACE_POST_UPDATE("LC", ip, idx - 1, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
2124 2125 |
ifp->if_lastex = idx - 1; if (cur == NULL) { |
3e57ecf64 [XFS] Add paramet... |
2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 |
rval = XFS_ILOG_FEXT(whichfork); } else { rval = 0; if ((error = xfs_bmbt_lookup_eq(cur, left.br_startoff, left.br_startblock, left.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, left.br_startoff, left.br_startblock, left.br_blockcount + new->br_blockcount, left.br_state))) goto done; |
1da177e4c Linux-2.6.12-rc2 |
2141 |
} |
3e57ecf64 [XFS] Add paramet... |
2142 2143 2144 2145 2146 |
/* DELTA: One in-core extent grew. */ temp = left.br_startoff; temp2 = left.br_blockcount + new->br_blockcount; break; |
1da177e4c Linux-2.6.12-rc2 |
2147 2148 2149 2150 2151 2152 2153 |
case MASK(RIGHT_CONTIG): /* * New allocation is contiguous with a real allocation * on the right. * Merge the new allocation with the right neighbor. */ |
3a59c94c4 [XFS] Clean up fu... |
2154 |
XFS_BMAP_TRACE_PRE_UPDATE("RC", ip, idx, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
2155 2156 2157 |
xfs_bmbt_set_allf(ep, new->br_startoff, new->br_startblock, new->br_blockcount + right.br_blockcount, right.br_state); |
3a59c94c4 [XFS] Clean up fu... |
2158 |
XFS_BMAP_TRACE_POST_UPDATE("RC", ip, idx, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
2159 2160 |
ifp->if_lastex = idx; if (cur == NULL) { |
3e57ecf64 [XFS] Add paramet... |
2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 |
rval = XFS_ILOG_FEXT(whichfork); } else { rval = 0; if ((error = xfs_bmbt_lookup_eq(cur, right.br_startoff, right.br_startblock, right.br_blockcount, &i))) goto done; ASSERT(i == 1); if ((error = xfs_bmbt_update(cur, new->br_startoff, new->br_startblock, new->br_blockcount + right.br_blockcount, right.br_state))) goto done; |
1da177e4c Linux-2.6.12-rc2 |
2176 |
} |
3e57ecf64 [XFS] Add paramet... |
2177 2178 2179 2180 2181 |
/* DELTA: One in-core extent grew. */ temp = new->br_startoff; temp2 = new->br_blockcount + right.br_blockcount; break; |
1da177e4c Linux-2.6.12-rc2 |
2182 2183 2184 2185 2186 2187 2188 |
case 0: /* * New allocation is not contiguous with another * real allocation. * Insert a new entry. */ |
3a59c94c4 [XFS] Clean up fu... |
2189 |
XFS_BMAP_TRACE_INSERT("0", ip, idx, 1, new, NULL, whichfork); |
4eea22f01 [XFS] 929045 5673... |
2190 |
xfs_iext_insert(ifp, idx, 1, new); |
1da177e4c Linux-2.6.12-rc2 |
2191 2192 2193 2194 |
ifp->if_lastex = idx; XFS_IFORK_NEXT_SET(ip, whichfork, XFS_IFORK_NEXTENTS(ip, whichfork) + 1); if (cur == NULL) { |
3e57ecf64 [XFS] Add paramet... |
2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 |
rval = XFS_ILOG_CORE | XFS_ILOG_FEXT(whichfork); } else { rval = XFS_ILOG_CORE; if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, new->br_startblock, new->br_blockcount, &i))) goto done; ASSERT(i == 0); cur->bc_rec.b.br_state = new->br_state; if ((error = xfs_bmbt_insert(cur, &i))) goto done; ASSERT(i == 1); |
1da177e4c Linux-2.6.12-rc2 |
2208 |
} |
3e57ecf64 [XFS] Add paramet... |
2209 2210 2211 2212 |
/* DELTA: A new extent was added in a hole. */ temp = new->br_startoff; temp2 = new->br_blockcount; break; |
1da177e4c Linux-2.6.12-rc2 |
2213 |
} |
3e57ecf64 [XFS] Add paramet... |
2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 |
if (delta) { temp2 += temp; if (delta->xed_startoff > temp) delta->xed_startoff = temp; if (delta->xed_blockcount < temp2) delta->xed_blockcount = temp2; } done: *logflagsp = rval; return error; |
1da177e4c Linux-2.6.12-rc2 |
2224 2225 2226 2227 2228 2229 |
#undef MASK #undef MASK2 #undef STATE_SET #undef STATE_TEST #undef STATE_SET_TEST #undef SWITCH_STATE |
1da177e4c Linux-2.6.12-rc2 |
2230 |
} |
dd9f438e3 [XFS] Implement t... |
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/* * Adjust the size of the new extent based on di_extsize and rt extsize. */ STATIC int xfs_bmap_extsize_align( xfs_mount_t *mp, xfs_bmbt_irec_t *gotp, /* next extent pointer */ xfs_bmbt_irec_t *prevp, /* previous extent pointer */ xfs_extlen_t extsz, /* align to this extent size */ int rt, /* is this a realtime inode? */ int eof, /* is extent at end-of-file? */ int delay, /* creating delalloc extent? */ int convert, /* overwriting unwritten extent? */ xfs_fileoff_t *offp, /* in/out: aligned offset */ xfs_extlen_t *lenp) /* in/out: aligned length */ { xfs_fileoff_t orig_off; /* original offset */ xfs_extlen_t orig_alen; /* original length */ xfs_fileoff_t orig_end; /* original off+len */ xfs_fileoff_t nexto; /* next file offset */ xfs_fileoff_t prevo; /* previous file offset */ xfs_fileoff_t align_off; /* temp for offset */ xfs_extlen_t align_alen; /* temp for length */ xfs_extlen_t temp; /* temp for calculations */ if (convert) return 0; orig_off = align_off = *offp; orig_alen = align_alen = *lenp; orig_end = orig_off + orig_alen; /* * If this request overlaps an existing extent, then don't * attempt to perform any additional alignment. */ if (!delay && !eof && (orig_off >= gotp->br_startoff) && (orig_end <= gotp->br_startoff + gotp->br_blockcount)) { return 0; } /* * If the file offset is unaligned vs. the extent size * we need to align it. This will be possible unless * the file was previously written with a kernel that didn't * perform this alignment, or if a truncate shot us in the * foot. */ temp = do_mod(orig_off, extsz); if (temp) { align_alen += temp; align_off -= temp; } /* * Same adjustment for the end of the requested area. */ if ((temp = (align_alen % extsz))) { align_alen += extsz - temp; } /* * If the previous block overlaps with this proposed allocation * then move the start forward without adjusting the length. */ if (prevp->br_startoff != NULLFILEOFF) { if (prevp->br_startblock == HOLESTARTBLOCK) prevo = prevp->br_startoff; else prevo = prevp->br_startoff + prevp->br_blockcount; } else prevo = 0; if (align_off != orig_off && align_off < prevo) align_off = prevo; /* * If the next block overlaps with this proposed allocation * then move the start back without adjusting the length, * but not before offset 0. * This may of course make the start overlap previous block, * and if we hit the offset 0 limit then the next block * can still overlap too. */ if (!eof && gotp->br_startoff != NULLFILEOFF) { if ((delay && gotp->br_startblock == HOLESTARTBLOCK) || (!delay && gotp->br_startblock == DELAYSTARTBLOCK)) nexto = gotp->br_startoff + gotp->br_blockcount; else nexto = gotp->br_startoff; } else nexto = NULLFILEOFF; if (!eof && align_off + align_alen != orig_end && align_off + align_alen > nexto) align_off = nexto > align_alen ? nexto - align_alen : 0; /* * If we're now overlapping the next or previous extent that * means we can't fit an extsz piece in this hole. Just move * the start forward to the first valid spot and set * the length so we hit the end. */ if (align_off != orig_off && align_off < prevo) align_off = prevo; if (align_off + align_alen != orig_end && align_off + align_alen > nexto && nexto != NULLFILEOFF) { ASSERT(nexto > prevo); align_alen = nexto - align_off; } /* * If realtime, and the result isn't a multiple of the realtime * extent size we need to remove blocks until it is. */ if (rt && (temp = (align_alen % mp->m_sb.sb_rextsize))) { /* * We're not covering the original request, or * we won't be able to once we fix the length. */ if (orig_off < align_off || orig_end > align_off + align_alen || align_alen - temp < orig_alen) return XFS_ERROR(EINVAL); /* * Try to fix it by moving the start up. */ if (align_off + temp <= orig_off) { align_alen -= temp; align_off += temp; } /* * Try to fix it by moving the end in. */ else if (align_off + align_alen - temp >= orig_end) align_alen -= temp; /* * Set the start to the minimum then trim the length. */ else { align_alen -= orig_off - align_off; align_off = orig_off; align_alen -= align_alen % mp->m_sb.sb_rextsize; } /* * Result doesn't cover the request, fail it. */ if (orig_off < align_off || orig_end > align_off + align_alen) return XFS_ERROR(EINVAL); } else { ASSERT(orig_off >= align_off); ASSERT(orig_end <= align_off + align_alen); } #ifdef DEBUG if (!eof && gotp->br_startoff != NULLFILEOFF) ASSERT(align_off + align_alen <= gotp->br_startoff); if (prevp->br_startoff != NULLFILEOFF) ASSERT(align_off >= prevp->br_startoff + prevp->br_blockcount); #endif *lenp = align_alen; *offp = align_off; return 0; } |
1da177e4c Linux-2.6.12-rc2 |
2393 |
#define XFS_ALLOC_GAP_UNITS 4 |
c2b1cba68 [XFS] xfs_bmap_ad... |
2394 |
STATIC void |
a365bdd5e [XFS] Reduce stac... |
2395 |
xfs_bmap_adjacent( |
1da177e4c Linux-2.6.12-rc2 |
2396 2397 2398 |
xfs_bmalloca_t *ap) /* bmap alloc argument struct */ { xfs_fsblock_t adjust; /* adjustment to block numbers */ |
1da177e4c Linux-2.6.12-rc2 |
2399 2400 2401 2402 |
xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ xfs_mount_t *mp; /* mount point structure */ int nullfb; /* true if ap->firstblock isn't set */ int rt; /* true if inode is realtime */ |
1da177e4c Linux-2.6.12-rc2 |
2403 2404 2405 2406 2407 2408 2409 |
#define ISVALID(x,y) \ (rt ? \ (x) < mp->m_sb.sb_rblocks : \ XFS_FSB_TO_AGNO(mp, x) == XFS_FSB_TO_AGNO(mp, y) && \ XFS_FSB_TO_AGNO(mp, x) < mp->m_sb.sb_agcount && \ XFS_FSB_TO_AGBNO(mp, x) < mp->m_sb.sb_agblocks) |
1da177e4c Linux-2.6.12-rc2 |
2410 2411 2412 2413 |
mp = ap->ip->i_mount; nullfb = ap->firstblock == NULLFSBLOCK; rt = XFS_IS_REALTIME_INODE(ap->ip) && ap->userdata; fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, ap->firstblock); |
1da177e4c Linux-2.6.12-rc2 |
2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 |
/* * If allocating at eof, and there's a previous real block, * try to use it's last block as our starting point. */ if (ap->eof && ap->prevp->br_startoff != NULLFILEOFF && !ISNULLSTARTBLOCK(ap->prevp->br_startblock) && ISVALID(ap->prevp->br_startblock + ap->prevp->br_blockcount, ap->prevp->br_startblock)) { ap->rval = ap->prevp->br_startblock + ap->prevp->br_blockcount; /* * Adjust for the gap between prevp and us. */ adjust = ap->off - (ap->prevp->br_startoff + ap->prevp->br_blockcount); if (adjust && ISVALID(ap->rval + adjust, ap->prevp->br_startblock)) ap->rval += adjust; } /* * If not at eof, then compare the two neighbor blocks. * Figure out whether either one gives us a good starting point, * and pick the better one. */ else if (!ap->eof) { xfs_fsblock_t gotbno; /* right side block number */ xfs_fsblock_t gotdiff=0; /* right side difference */ xfs_fsblock_t prevbno; /* left side block number */ xfs_fsblock_t prevdiff=0; /* left side difference */ /* * If there's a previous (left) block, select a requested * start block based on it. */ if (ap->prevp->br_startoff != NULLFILEOFF && !ISNULLSTARTBLOCK(ap->prevp->br_startblock) && (prevbno = ap->prevp->br_startblock + ap->prevp->br_blockcount) && ISVALID(prevbno, ap->prevp->br_startblock)) { /* * Calculate gap to end of previous block. */ adjust = prevdiff = ap->off - (ap->prevp->br_startoff + ap->prevp->br_blockcount); /* * Figure the startblock based on the previous block's * end and the gap size. * Heuristic! * If the gap is large relative to the piece we're * allocating, or using it gives us an invalid block * number, then just use the end of the previous block. */ if (prevdiff <= XFS_ALLOC_GAP_UNITS * ap->alen && ISVALID(prevbno + prevdiff, ap->prevp->br_startblock)) prevbno += adjust; else prevdiff += adjust; /* * If the firstblock forbids it, can't use it, * must use default. */ if (!rt && !nullfb && XFS_FSB_TO_AGNO(mp, prevbno) != fb_agno) prevbno = NULLFSBLOCK; } /* * No previous block or can't follow it, just default. */ else prevbno = NULLFSBLOCK; /* * If there's a following (right) block, select a requested * start block based on it. */ if (!ISNULLSTARTBLOCK(ap->gotp->br_startblock)) { /* * Calculate gap to start of next block. */ adjust = gotdiff = ap->gotp->br_startoff - ap->off; /* * Figure the startblock based on the next block's * start and the gap size. */ gotbno = ap->gotp->br_startblock; /* * Heuristic! * If the gap is large relative to the piece we're * allocating, or using it gives us an invalid block * number, then just use the start of the next block * offset by our length. */ if (gotdiff <= XFS_ALLOC_GAP_UNITS * ap->alen && ISVALID(gotbno - gotdiff, gotbno)) gotbno -= adjust; else if (ISVALID(gotbno - ap->alen, gotbno)) { gotbno -= ap->alen; gotdiff += adjust - ap->alen; } else gotdiff += adjust; /* * If the firstblock forbids it, can't use it, * must use default. */ if (!rt && !nullfb && XFS_FSB_TO_AGNO(mp, gotbno) != fb_agno) gotbno = NULLFSBLOCK; } /* * No next block, just default. */ else gotbno = NULLFSBLOCK; /* * If both valid, pick the better one, else the only good * one, else ap->rval is already set (to 0 or the inode block). */ if (prevbno != NULLFSBLOCK && gotbno != NULLFSBLOCK) ap->rval = prevdiff <= gotdiff ? prevbno : gotbno; else if (prevbno != NULLFSBLOCK) ap->rval = prevbno; else if (gotbno != NULLFSBLOCK) ap->rval = gotbno; } |
a365bdd5e [XFS] Reduce stac... |
2538 |
#undef ISVALID |
a365bdd5e [XFS] Reduce stac... |
2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 |
} STATIC int xfs_bmap_rtalloc( xfs_bmalloca_t *ap) /* bmap alloc argument struct */ { xfs_alloctype_t atype = 0; /* type for allocation routines */ int error; /* error return value */ xfs_mount_t *mp; /* mount point structure */ xfs_extlen_t prod = 0; /* product factor for allocators */ xfs_extlen_t ralen = 0; /* realtime allocation length */ xfs_extlen_t align; /* minimum allocation alignment */ |
a365bdd5e [XFS] Reduce stac... |
2551 2552 2553 |
xfs_rtblock_t rtb; mp = ap->ip->i_mount; |
957d0ebed [XFS] Cleanup ino... |
2554 |
align = xfs_get_extsz_hint(ap->ip); |
a365bdd5e [XFS] Reduce stac... |
2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 |
prod = align / mp->m_sb.sb_rextsize; error = xfs_bmap_extsize_align(mp, ap->gotp, ap->prevp, align, 1, ap->eof, 0, ap->conv, &ap->off, &ap->alen); if (error) return error; ASSERT(ap->alen); ASSERT(ap->alen % mp->m_sb.sb_rextsize == 0); /* * If the offset & length are not perfectly aligned * then kill prod, it will just get us in trouble. */ if (do_mod(ap->off, align) || ap->alen % align) prod = 1; /* * Set ralen to be the actual requested length in rtextents. */ ralen = ap->alen / mp->m_sb.sb_rextsize; /* * If the old value was close enough to MAXEXTLEN that * we rounded up to it, cut it back so it's valid again. * Note that if it's a really large request (bigger than * MAXEXTLEN), we don't hear about that number, and can't * adjust the starting point to match it. */ if (ralen * mp->m_sb.sb_rextsize >= MAXEXTLEN) ralen = MAXEXTLEN / mp->m_sb.sb_rextsize; /* * If it's an allocation to an empty file at offset 0, * pick an extent that will space things out in the rt area. */ if (ap->eof && ap->off == 0) { |
0892ccd6f [XFS] Use uniniti... |
2588 |
xfs_rtblock_t uninitialized_var(rtx); /* realtime extent no */ |
a365bdd5e [XFS] Reduce stac... |
2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 |
error = xfs_rtpick_extent(mp, ap->tp, ralen, &rtx); if (error) return error; ap->rval = rtx * mp->m_sb.sb_rextsize; } else { ap->rval = 0; } xfs_bmap_adjacent(ap); /* * Realtime allocation, done through xfs_rtallocate_extent. */ atype = ap->rval == 0 ? XFS_ALLOCTYPE_ANY_AG : XFS_ALLOCTYPE_NEAR_BNO; do_div(ap->rval, mp->m_sb.sb_rextsize); rtb = ap->rval; ap->alen = ralen; if ((error = xfs_rtallocate_extent(ap->tp, ap->rval, 1, ap->alen, &ralen, atype, ap->wasdel, prod, &rtb))) return error; if (rtb == NULLFSBLOCK && prod > 1 && (error = xfs_rtallocate_extent(ap->tp, ap->rval, 1, ap->alen, &ralen, atype, ap->wasdel, 1, &rtb))) return error; ap->rval = rtb; if (ap->rval != NULLFSBLOCK) { ap->rval *= mp->m_sb.sb_rextsize; ralen *= mp->m_sb.sb_rextsize; ap->alen = ralen; ap->ip->i_d.di_nblocks += ralen; xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); if (ap->wasdel) ap->ip->i_delayed_blks -= ralen; /* * Adjust the disk quota also. This was reserved * earlier. */ XFS_TRANS_MOD_DQUOT_BYINO(mp, ap->tp, ap->ip, ap->wasdel ? XFS_TRANS_DQ_DELRTBCOUNT : XFS_TRANS_DQ_RTBCOUNT, (long) ralen); } else { ap->alen = 0; } return 0; } STATIC int xfs_bmap_btalloc( xfs_bmalloca_t *ap) /* bmap alloc argument struct */ { xfs_mount_t *mp; /* mount point structure */ xfs_alloctype_t atype = 0; /* type for allocation routines */ xfs_extlen_t align; /* minimum allocation alignment */ xfs_agnumber_t ag; xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ xfs_agnumber_t startag; xfs_alloc_arg_t args; xfs_extlen_t blen; xfs_extlen_t delta; xfs_extlen_t longest; xfs_extlen_t need; xfs_extlen_t nextminlen = 0; xfs_perag_t *pag; int nullfb; /* true if ap->firstblock isn't set */ int isaligned; int notinit; int tryagain; int error; mp = ap->ip->i_mount; |
957d0ebed [XFS] Cleanup ino... |
2660 |
align = ap->userdata ? xfs_get_extsz_hint(ap->ip) : 0; |
a365bdd5e [XFS] Reduce stac... |
2661 2662 2663 2664 2665 2666 2667 2668 2669 |
if (unlikely(align)) { error = xfs_bmap_extsize_align(mp, ap->gotp, ap->prevp, align, 0, ap->eof, 0, ap->conv, &ap->off, &ap->alen); ASSERT(!error); ASSERT(ap->alen); } nullfb = ap->firstblock == NULLFSBLOCK; fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, ap->firstblock); |
2a82b8be8 [XFS] Concurrent ... |
2670 2671 2672 2673 2674 2675 2676 2677 2678 |
if (nullfb) { if (ap->userdata && xfs_inode_is_filestream(ap->ip)) { ag = xfs_filestream_lookup_ag(ap->ip); ag = (ag != NULLAGNUMBER) ? ag : 0; ap->rval = XFS_AGB_TO_FSB(mp, ag, 0); } else { ap->rval = XFS_INO_TO_FSB(mp, ap->ip->i_ino); } } else |
a365bdd5e [XFS] Reduce stac... |
2679 2680 2681 |
ap->rval = ap->firstblock; xfs_bmap_adjacent(ap); |
1da177e4c Linux-2.6.12-rc2 |
2682 2683 2684 2685 |
/* * If allowed, use ap->rval; otherwise must use firstblock since * it's in the right allocation group. */ |
a365bdd5e [XFS] Reduce stac... |
2686 |
if (nullfb || XFS_FSB_TO_AGNO(mp, ap->rval) == fb_agno) |
1da177e4c Linux-2.6.12-rc2 |
2687 2688 2689 2690 |
; else ap->rval = ap->firstblock; /* |
a365bdd5e [XFS] Reduce stac... |
2691 |
* Normal allocation, done through xfs_alloc_vextent. |
1da177e4c Linux-2.6.12-rc2 |
2692 |
*/ |
a365bdd5e [XFS] Reduce stac... |
2693 2694 2695 2696 2697 |
tryagain = isaligned = 0; args.tp = ap->tp; args.mp = mp; args.fsbno = ap->rval; args.maxlen = MIN(ap->alen, mp->m_sb.sb_agblocks); |
d210a28cd [XFS] In actual a... |
2698 |
args.firstblock = ap->firstblock; |
a365bdd5e [XFS] Reduce stac... |
2699 2700 |
blen = 0; if (nullfb) { |
2a82b8be8 [XFS] Concurrent ... |
2701 2702 2703 2704 |
if (ap->userdata && xfs_inode_is_filestream(ap->ip)) args.type = XFS_ALLOCTYPE_NEAR_BNO; else args.type = XFS_ALLOCTYPE_START_BNO; |
a365bdd5e [XFS] Reduce stac... |
2705 |
args.total = ap->total; |
2a82b8be8 [XFS] Concurrent ... |
2706 |
|
a365bdd5e [XFS] Reduce stac... |
2707 |
/* |
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2708 2709 2710 2711 2712 |
* Search for an allocation group with a single extent * large enough for the request. * * If one isn't found, then adjust the minimum allocation * size to the largest space found. |
a365bdd5e [XFS] Reduce stac... |
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*/ startag = ag = XFS_FSB_TO_AGNO(mp, args.fsbno); |
2a82b8be8 [XFS] Concurrent ... |
2715 2716 |
if (startag == NULLAGNUMBER) startag = ag = 0; |
a365bdd5e [XFS] Reduce stac... |
2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 |
notinit = 0; down_read(&mp->m_peraglock); while (blen < ap->alen) { pag = &mp->m_perag[ag]; if (!pag->pagf_init && (error = xfs_alloc_pagf_init(mp, args.tp, ag, XFS_ALLOC_FLAG_TRYLOCK))) { up_read(&mp->m_peraglock); return error; } |
1da177e4c Linux-2.6.12-rc2 |
2727 |
/* |
a365bdd5e [XFS] Reduce stac... |
2728 |
* See xfs_alloc_fix_freelist... |
1da177e4c Linux-2.6.12-rc2 |
2729 |
*/ |
a365bdd5e [XFS] Reduce stac... |
2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 |
if (pag->pagf_init) { need = XFS_MIN_FREELIST_PAG(pag, mp); delta = need > pag->pagf_flcount ? need - pag->pagf_flcount : 0; longest = (pag->pagf_longest > delta) ? (pag->pagf_longest - delta) : (pag->pagf_flcount > 0 || pag->pagf_longest > 0); if (blen < longest) blen = longest; } else notinit = 1; |
2a82b8be8 [XFS] Concurrent ... |
2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 |
if (xfs_inode_is_filestream(ap->ip)) { if (blen >= ap->alen) break; if (ap->userdata) { /* * If startag is an invalid AG, we've * come here once before and * xfs_filestream_new_ag picked the * best currently available. * * Don't continue looping, since we * could loop forever. */ if (startag == NULLAGNUMBER) break; error = xfs_filestream_new_ag(ap, &ag); if (error) { up_read(&mp->m_peraglock); return error; } /* loop again to set 'blen'*/ startag = NULLAGNUMBER; continue; } } |
a365bdd5e [XFS] Reduce stac... |
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if (++ag == mp->m_sb.sb_agcount) ag = 0; if (ag == startag) break; } up_read(&mp->m_peraglock); /* * Since the above loop did a BUF_TRYLOCK, it is * possible that there is space for this request. */ if (notinit || blen < ap->minlen) args.minlen = ap->minlen; /* * If the best seen length is less than the request * length, use the best as the minimum. */ else if (blen < ap->alen) args.minlen = blen; /* * Otherwise we've seen an extent as big as alen, * use that as the minimum. */ else args.minlen = ap->alen; |
2a82b8be8 [XFS] Concurrent ... |
2795 2796 2797 2798 2799 2800 2801 |
/* * set the failure fallback case to look in the selected * AG as the stream may have moved. */ if (xfs_inode_is_filestream(ap->ip)) ap->rval = args.fsbno = XFS_AGB_TO_FSB(mp, ag, 0); |
a365bdd5e [XFS] Reduce stac... |
2802 |
} else if (ap->low) { |
2a82b8be8 [XFS] Concurrent ... |
2803 2804 2805 2806 |
if (xfs_inode_is_filestream(ap->ip)) args.type = XFS_ALLOCTYPE_FIRST_AG; else args.type = XFS_ALLOCTYPE_START_BNO; |
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args.total = args.minlen = ap->minlen; } else { args.type = XFS_ALLOCTYPE_NEAR_BNO; args.total = ap->total; args.minlen = ap->minlen; } |
957d0ebed [XFS] Cleanup ino... |
2813 2814 2815 |
/* apply extent size hints if obtained earlier */ if (unlikely(align)) { args.prod = align; |
a365bdd5e [XFS] Reduce stac... |
2816 2817 |
if ((args.mod = (xfs_extlen_t)do_mod(ap->off, args.prod))) args.mod = (xfs_extlen_t)(args.prod - args.mod); |
e6a4b37f3 [XFS] Remove the ... |
2818 |
} else if (mp->m_sb.sb_blocksize >= PAGE_CACHE_SIZE) { |
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args.prod = 1; args.mod = 0; } else { |
e6a4b37f3 [XFS] Remove the ... |
2822 |
args.prod = PAGE_CACHE_SIZE >> mp->m_sb.sb_blocklog; |
a365bdd5e [XFS] Reduce stac... |
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if ((args.mod = (xfs_extlen_t)(do_mod(ap->off, args.prod)))) args.mod = (xfs_extlen_t)(args.prod - args.mod); |
1da177e4c Linux-2.6.12-rc2 |
2825 2826 |
} /* |
a365bdd5e [XFS] Reduce stac... |
2827 2828 2829 2830 2831 2832 2833 |
* If we are not low on available data blocks, and the * underlying logical volume manager is a stripe, and * the file offset is zero then try to allocate data * blocks on stripe unit boundary. * NOTE: ap->aeof is only set if the allocation length * is >= the stripe unit and the allocation offset is * at the end of file. |
1da177e4c Linux-2.6.12-rc2 |
2834 |
*/ |
a365bdd5e [XFS] Reduce stac... |
2835 2836 2837 2838 2839 |
if (!ap->low && ap->aeof) { if (!ap->off) { args.alignment = mp->m_dalign; atype = args.type; isaligned = 1; |
1da177e4c Linux-2.6.12-rc2 |
2840 |
/* |
a365bdd5e [XFS] Reduce stac... |
2841 |
* Adjust for alignment |
1da177e4c Linux-2.6.12-rc2 |
2842 |
*/ |
a365bdd5e [XFS] Reduce stac... |
2843 2844 2845 2846 |
if (blen > args.alignment && blen <= ap->alen) args.minlen = blen - args.alignment; args.minalignslop = 0; } else { |
1da177e4c Linux-2.6.12-rc2 |
2847 |
/* |
a365bdd5e [XFS] Reduce stac... |
2848 2849 2850 |
* First try an exact bno allocation. * If it fails then do a near or start bno * allocation with alignment turned on. |
1da177e4c Linux-2.6.12-rc2 |
2851 |
*/ |
a365bdd5e [XFS] Reduce stac... |
2852 2853 2854 2855 |
atype = args.type; tryagain = 1; args.type = XFS_ALLOCTYPE_THIS_BNO; args.alignment = 1; |
1da177e4c Linux-2.6.12-rc2 |
2856 |
/* |
a365bdd5e [XFS] Reduce stac... |
2857 2858 2859 2860 |
* Compute the minlen+alignment for the * next case. Set slop so that the value * of minlen+alignment+slop doesn't go up * between the calls. |
1da177e4c Linux-2.6.12-rc2 |
2861 |
*/ |
a365bdd5e [XFS] Reduce stac... |
2862 2863 |
if (blen > mp->m_dalign && blen <= ap->alen) nextminlen = blen - mp->m_dalign; |
1da177e4c Linux-2.6.12-rc2 |
2864 |
else |
a365bdd5e [XFS] Reduce stac... |
2865 2866 2867 2868 2869 2870 2871 |
nextminlen = args.minlen; if (nextminlen + mp->m_dalign > args.minlen + 1) args.minalignslop = nextminlen + mp->m_dalign - args.minlen - 1; else args.minalignslop = 0; |
1da177e4c Linux-2.6.12-rc2 |
2872 |
} |
a365bdd5e [XFS] Reduce stac... |
2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 |
} else { args.alignment = 1; args.minalignslop = 0; } args.minleft = ap->minleft; args.wasdel = ap->wasdel; args.isfl = 0; args.userdata = ap->userdata; if ((error = xfs_alloc_vextent(&args))) return error; if (tryagain && args.fsbno == NULLFSBLOCK) { |
1da177e4c Linux-2.6.12-rc2 |
2884 |
/* |
a365bdd5e [XFS] Reduce stac... |
2885 2886 |
* Exact allocation failed. Now try with alignment * turned on. |
1da177e4c Linux-2.6.12-rc2 |
2887 |
*/ |
a365bdd5e [XFS] Reduce stac... |
2888 2889 2890 2891 2892 2893 |
args.type = atype; args.fsbno = ap->rval; args.alignment = mp->m_dalign; args.minlen = nextminlen; args.minalignslop = 0; isaligned = 1; |
1da177e4c Linux-2.6.12-rc2 |
2894 2895 |
if ((error = xfs_alloc_vextent(&args))) return error; |
a365bdd5e [XFS] Reduce stac... |
2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 |
} if (isaligned && args.fsbno == NULLFSBLOCK) { /* * allocation failed, so turn off alignment and * try again. */ args.type = atype; args.fsbno = ap->rval; args.alignment = 0; if ((error = xfs_alloc_vextent(&args))) return error; } if (args.fsbno == NULLFSBLOCK && nullfb && args.minlen > ap->minlen) { args.minlen = ap->minlen; args.type = XFS_ALLOCTYPE_START_BNO; args.fsbno = ap->rval; if ((error = xfs_alloc_vextent(&args))) return error; } if (args.fsbno == NULLFSBLOCK && nullfb) { args.fsbno = 0; args.type = XFS_ALLOCTYPE_FIRST_AG; args.total = ap->minlen; args.minleft = 0; if ((error = xfs_alloc_vextent(&args))) return error; ap->low = 1; } if (args.fsbno != NULLFSBLOCK) { ap->firstblock = ap->rval = args.fsbno; ASSERT(nullfb || fb_agno == args.agno || (ap->low && fb_agno < args.agno)); ap->alen = args.len; ap->ip->i_d.di_nblocks += args.len; xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); if (ap->wasdel) ap->ip->i_delayed_blks -= args.len; /* * Adjust the disk quota also. This was reserved * earlier. */ XFS_TRANS_MOD_DQUOT_BYINO(mp, ap->tp, ap->ip, ap->wasdel ? XFS_TRANS_DQ_DELBCOUNT : XFS_TRANS_DQ_BCOUNT, (long) args.len); } else { ap->rval = NULLFSBLOCK; ap->alen = 0; |
1da177e4c Linux-2.6.12-rc2 |
2945 2946 |
} return 0; |
a365bdd5e [XFS] Reduce stac... |
2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 |
} /* * xfs_bmap_alloc is called by xfs_bmapi to allocate an extent for a file. * It figures out where to ask the underlying allocator to put the new extent. */ STATIC int xfs_bmap_alloc( xfs_bmalloca_t *ap) /* bmap alloc argument struct */ { |
71ddabb94 [XFS] optimize XF... |
2957 |
if (XFS_IS_REALTIME_INODE(ap->ip) && ap->userdata) |
a365bdd5e [XFS] Reduce stac... |
2958 2959 |
return xfs_bmap_rtalloc(ap); return xfs_bmap_btalloc(ap); |
1da177e4c Linux-2.6.12-rc2 |
2960 2961 2962 2963 2964 |
} /* * Transform a btree format file with only one leaf node, where the * extents list will fit in the inode, into an extents format file. |
4eea22f01 [XFS] 929045 5673... |
2965 |
* Since the file extents are already in-core, all we have to do is |
1da177e4c Linux-2.6.12-rc2 |
2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 |
* give up the space for the btree root and pitch the leaf block. */ STATIC int /* error */ xfs_bmap_btree_to_extents( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_btree_cur_t *cur, /* btree cursor */ int *logflagsp, /* inode logging flags */ int whichfork) /* data or attr fork */ { /* REFERENCED */ xfs_bmbt_block_t *cblock;/* child btree block */ xfs_fsblock_t cbno; /* child block number */ xfs_buf_t *cbp; /* child block's buffer */ int error; /* error return value */ xfs_ifork_t *ifp; /* inode fork data */ xfs_mount_t *mp; /* mount point structure */ |
576039cf3 [XFS] endianess a... |
2983 |
__be64 *pp; /* ptr to block address */ |
1da177e4c Linux-2.6.12-rc2 |
2984 2985 2986 2987 2988 2989 |
xfs_bmbt_block_t *rblock;/* root btree block */ ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(ifp->if_flags & XFS_IFEXTENTS); ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE); rblock = ifp->if_broot; |
16259e7d9 [XFS] Endianess a... |
2990 2991 |
ASSERT(be16_to_cpu(rblock->bb_level) == 1); ASSERT(be16_to_cpu(rblock->bb_numrecs) == 1); |
1da177e4c Linux-2.6.12-rc2 |
2992 2993 2994 |
ASSERT(XFS_BMAP_BROOT_MAXRECS(ifp->if_broot_bytes) == 1); mp = ip->i_mount; pp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, ifp->if_broot_bytes); |
576039cf3 [XFS] endianess a... |
2995 |
cbno = be64_to_cpu(*pp); |
1da177e4c Linux-2.6.12-rc2 |
2996 2997 |
*logflagsp = 0; #ifdef DEBUG |
576039cf3 [XFS] endianess a... |
2998 |
if ((error = xfs_btree_check_lptr(cur, cbno, 1))) |
1da177e4c Linux-2.6.12-rc2 |
2999 3000 |
return error; #endif |
1da177e4c Linux-2.6.12-rc2 |
3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 |
if ((error = xfs_btree_read_bufl(mp, tp, cbno, 0, &cbp, XFS_BMAP_BTREE_REF))) return error; cblock = XFS_BUF_TO_BMBT_BLOCK(cbp); if ((error = xfs_btree_check_lblock(cur, cblock, 0, cbp))) return error; xfs_bmap_add_free(cbno, 1, cur->bc_private.b.flist, mp); ip->i_d.di_nblocks--; XFS_TRANS_MOD_DQUOT_BYINO(mp, tp, ip, XFS_TRANS_DQ_BCOUNT, -1L); xfs_trans_binval(tp, cbp); if (cur->bc_bufs[0] == cbp) cur->bc_bufs[0] = NULL; xfs_iroot_realloc(ip, -1, whichfork); ASSERT(ifp->if_broot == NULL); ASSERT((ifp->if_flags & XFS_IFBROOT) == 0); XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); *logflagsp = XFS_ILOG_CORE | XFS_ILOG_FEXT(whichfork); return 0; } /* |
4eea22f01 [XFS] 929045 5673... |
3022 |
* Called by xfs_bmapi to update file extent records and the btree |
1da177e4c Linux-2.6.12-rc2 |
3023 3024 3025 3026 3027 3028 3029 3030 3031 |
* after removing space (or undoing a delayed allocation). */ STATIC int /* error */ xfs_bmap_del_extent( xfs_inode_t *ip, /* incore inode pointer */ xfs_trans_t *tp, /* current transaction pointer */ xfs_extnum_t idx, /* extent number to update/delete */ xfs_bmap_free_t *flist, /* list of extents to be freed */ xfs_btree_cur_t *cur, /* if null, not a btree */ |
4eea22f01 [XFS] 929045 5673... |
3032 |
xfs_bmbt_irec_t *del, /* data to remove from extents */ |
1da177e4c Linux-2.6.12-rc2 |
3033 |
int *logflagsp, /* inode logging flags */ |
3e57ecf64 [XFS] Add paramet... |
3034 |
xfs_extdelta_t *delta, /* Change made to incore extents */ |
1da177e4c Linux-2.6.12-rc2 |
3035 3036 3037 3038 3039 3040 3041 3042 3043 |
int whichfork, /* data or attr fork */ int rsvd) /* OK to allocate reserved blocks */ { xfs_filblks_t da_new; /* new delay-alloc indirect blocks */ xfs_filblks_t da_old; /* old delay-alloc indirect blocks */ xfs_fsblock_t del_endblock=0; /* first block past del */ xfs_fileoff_t del_endoff; /* first offset past del */ int delay; /* current block is delayed allocated */ int do_fx; /* free extent at end of routine */ |
a6f64d4ae [XFS] split ondis... |
3044 |
xfs_bmbt_rec_host_t *ep; /* current extent entry pointer */ |
1da177e4c Linux-2.6.12-rc2 |
3045 3046 |
int error; /* error return value */ int flags; /* inode logging flags */ |
1da177e4c Linux-2.6.12-rc2 |
3047 3048 3049 3050 3051 3052 3053 3054 |
xfs_bmbt_irec_t got; /* current extent entry */ xfs_fileoff_t got_endoff; /* first offset past got */ int i; /* temp state */ xfs_ifork_t *ifp; /* inode fork pointer */ xfs_mount_t *mp; /* mount structure */ xfs_filblks_t nblks; /* quota/sb block count */ xfs_bmbt_irec_t new; /* new record to be inserted */ /* REFERENCED */ |
1da177e4c Linux-2.6.12-rc2 |
3055 3056 3057 3058 3059 3060 3061 |
uint qfield; /* quota field to update */ xfs_filblks_t temp; /* for indirect length calculations */ xfs_filblks_t temp2; /* for indirect length calculations */ XFS_STATS_INC(xs_del_exlist); mp = ip->i_mount; ifp = XFS_IFORK_PTR(ip, whichfork); |
4eea22f01 [XFS] 929045 5673... |
3062 3063 |
ASSERT((idx >= 0) && (idx < ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))); |
1da177e4c Linux-2.6.12-rc2 |
3064 |
ASSERT(del->br_blockcount > 0); |
4eea22f01 [XFS] 929045 5673... |
3065 |
ep = xfs_iext_get_ext(ifp, idx); |
1da177e4c Linux-2.6.12-rc2 |
3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 |
xfs_bmbt_get_all(ep, &got); ASSERT(got.br_startoff <= del->br_startoff); del_endoff = del->br_startoff + del->br_blockcount; got_endoff = got.br_startoff + got.br_blockcount; ASSERT(got_endoff >= del_endoff); delay = ISNULLSTARTBLOCK(got.br_startblock); ASSERT(ISNULLSTARTBLOCK(del->br_startblock) == delay); flags = 0; qfield = 0; error = 0; /* * If deleting a real allocation, must free up the disk space. */ if (!delay) { flags = XFS_ILOG_CORE; /* * Realtime allocation. Free it and record di_nblocks update. */ |
71ddabb94 [XFS] optimize XF... |
3084 |
if (whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip)) { |
1da177e4c Linux-2.6.12-rc2 |
3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 |
xfs_fsblock_t bno; xfs_filblks_t len; ASSERT(do_mod(del->br_blockcount, mp->m_sb.sb_rextsize) == 0); ASSERT(do_mod(del->br_startblock, mp->m_sb.sb_rextsize) == 0); bno = del->br_startblock; len = del->br_blockcount; do_div(bno, mp->m_sb.sb_rextsize); do_div(len, mp->m_sb.sb_rextsize); if ((error = xfs_rtfree_extent(ip->i_transp, bno, (xfs_extlen_t)len))) goto done; do_fx = 0; nblks = len * mp->m_sb.sb_rextsize; qfield = XFS_TRANS_DQ_RTBCOUNT; } /* * Ordinary allocation. */ else { do_fx = 1; nblks = del->br_blockcount; qfield = XFS_TRANS_DQ_BCOUNT; } /* * Set up del_endblock and cur for later. */ del_endblock = del->br_startblock + del->br_blockcount; if (cur) { if ((error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock, got.br_blockcount, &i))) goto done; ASSERT(i == 1); } da_old = da_new = 0; } else { da_old = STARTBLOCKVAL(got.br_startblock); da_new = 0; nblks = 0; do_fx = 0; } /* * Set flag value to use in switch statement. * Left-contig is 2, right-contig is 1. */ switch (((got.br_startoff == del->br_startoff) << 1) | (got_endoff == del_endoff)) { case 3: /* * Matches the whole extent. Delete the entry. */ |
3a59c94c4 [XFS] Clean up fu... |
3139 |
XFS_BMAP_TRACE_DELETE("3", ip, idx, 1, whichfork); |
4eea22f01 [XFS] 929045 5673... |
3140 |
xfs_iext_remove(ifp, idx, 1); |
1da177e4c Linux-2.6.12-rc2 |
3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 |
ifp->if_lastex = idx; if (delay) break; XFS_IFORK_NEXT_SET(ip, whichfork, XFS_IFORK_NEXTENTS(ip, whichfork) - 1); flags |= XFS_ILOG_CORE; if (!cur) { flags |= XFS_ILOG_FEXT(whichfork); break; } if ((error = xfs_bmbt_delete(cur, &i))) goto done; ASSERT(i == 1); break; case 2: /* * Deleting the first part of the extent. */ |
3a59c94c4 [XFS] Clean up fu... |
3160 |
XFS_BMAP_TRACE_PRE_UPDATE("2", ip, idx, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
3161 3162 3163 3164 3165 3166 3167 3168 |
xfs_bmbt_set_startoff(ep, del_endoff); temp = got.br_blockcount - del->br_blockcount; xfs_bmbt_set_blockcount(ep, temp); ifp->if_lastex = idx; if (delay) { temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), da_old); xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); |
3a59c94c4 [XFS] Clean up fu... |
3169 |
XFS_BMAP_TRACE_POST_UPDATE("2", ip, idx, |
1da177e4c Linux-2.6.12-rc2 |
3170 3171 3172 3173 3174 |
whichfork); da_new = temp; break; } xfs_bmbt_set_startblock(ep, del_endblock); |
3a59c94c4 [XFS] Clean up fu... |
3175 |
XFS_BMAP_TRACE_POST_UPDATE("2", ip, idx, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 |
if (!cur) { flags |= XFS_ILOG_FEXT(whichfork); break; } if ((error = xfs_bmbt_update(cur, del_endoff, del_endblock, got.br_blockcount - del->br_blockcount, got.br_state))) goto done; break; case 1: /* * Deleting the last part of the extent. */ temp = got.br_blockcount - del->br_blockcount; |
3a59c94c4 [XFS] Clean up fu... |
3191 |
XFS_BMAP_TRACE_PRE_UPDATE("1", ip, idx, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
3192 3193 3194 3195 3196 3197 |
xfs_bmbt_set_blockcount(ep, temp); ifp->if_lastex = idx; if (delay) { temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), da_old); xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); |
3a59c94c4 [XFS] Clean up fu... |
3198 |
XFS_BMAP_TRACE_POST_UPDATE("1", ip, idx, |
1da177e4c Linux-2.6.12-rc2 |
3199 3200 3201 3202 |
whichfork); da_new = temp; break; } |
3a59c94c4 [XFS] Clean up fu... |
3203 |
XFS_BMAP_TRACE_POST_UPDATE("1", ip, idx, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 |
if (!cur) { flags |= XFS_ILOG_FEXT(whichfork); break; } if ((error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock, got.br_blockcount - del->br_blockcount, got.br_state))) goto done; break; case 0: /* * Deleting the middle of the extent. */ temp = del->br_startoff - got.br_startoff; |
3a59c94c4 [XFS] Clean up fu... |
3220 |
XFS_BMAP_TRACE_PRE_UPDATE("0", ip, idx, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 |
xfs_bmbt_set_blockcount(ep, temp); new.br_startoff = del_endoff; temp2 = got_endoff - del_endoff; new.br_blockcount = temp2; new.br_state = got.br_state; if (!delay) { new.br_startblock = del_endblock; flags |= XFS_ILOG_CORE; if (cur) { if ((error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock, temp, got.br_state))) goto done; if ((error = xfs_bmbt_increment(cur, 0, &i))) goto done; cur->bc_rec.b = new; error = xfs_bmbt_insert(cur, &i); if (error && error != ENOSPC) goto done; /* * If get no-space back from btree insert, * it tried a split, and we have a zero * block reservation. * Fix up our state and return the error. */ if (error == ENOSPC) { /* * Reset the cursor, don't trust * it after any insert operation. */ if ((error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock, temp, &i))) goto done; ASSERT(i == 1); /* * Update the btree record back * to the original value. */ if ((error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock, got.br_blockcount, got.br_state))) goto done; /* * Reset the extent record back * to the original value. */ xfs_bmbt_set_blockcount(ep, got.br_blockcount); flags = 0; error = XFS_ERROR(ENOSPC); goto done; } ASSERT(i == 1); } else flags |= XFS_ILOG_FEXT(whichfork); XFS_IFORK_NEXT_SET(ip, whichfork, XFS_IFORK_NEXTENTS(ip, whichfork) + 1); } else { ASSERT(whichfork == XFS_DATA_FORK); temp = xfs_bmap_worst_indlen(ip, temp); xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); temp2 = xfs_bmap_worst_indlen(ip, temp2); new.br_startblock = NULLSTARTBLOCK((int)temp2); da_new = temp + temp2; while (da_new > da_old) { if (temp) { temp--; da_new--; xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); } if (da_new == da_old) break; if (temp2) { temp2--; da_new--; new.br_startblock = NULLSTARTBLOCK((int)temp2); } } } |
3a59c94c4 [XFS] Clean up fu... |
3307 3308 |
XFS_BMAP_TRACE_POST_UPDATE("0", ip, idx, whichfork); XFS_BMAP_TRACE_INSERT("0", ip, idx + 1, 1, &new, NULL, |
1da177e4c Linux-2.6.12-rc2 |
3309 |
whichfork); |
4eea22f01 [XFS] 929045 5673... |
3310 |
xfs_iext_insert(ifp, idx + 1, 1, &new); |
1da177e4c Linux-2.6.12-rc2 |
3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 |
ifp->if_lastex = idx + 1; break; } /* * If we need to, add to list of extents to delete. */ if (do_fx) xfs_bmap_add_free(del->br_startblock, del->br_blockcount, flist, mp); /* * Adjust inode # blocks in the file. */ if (nblks) ip->i_d.di_nblocks -= nblks; /* * Adjust quota data. */ if (qfield) XFS_TRANS_MOD_DQUOT_BYINO(mp, tp, ip, qfield, (long)-nblks); /* * Account for change in delayed indirect blocks. * Nothing to do for disk quota accounting here. */ ASSERT(da_old >= da_new); if (da_old > da_new) |
20f4ebf2b [XFS] Make growfs... |
3337 |
xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, (int64_t)(da_old - da_new), |
1da177e4c Linux-2.6.12-rc2 |
3338 |
rsvd); |
3e57ecf64 [XFS] Add paramet... |
3339 3340 3341 3342 3343 3344 3345 3346 |
if (delta) { /* DELTA: report the original extent. */ if (delta->xed_startoff > got.br_startoff) delta->xed_startoff = got.br_startoff; if (delta->xed_blockcount < got.br_startoff+got.br_blockcount) delta->xed_blockcount = got.br_startoff + got.br_blockcount; } |
1da177e4c Linux-2.6.12-rc2 |
3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 |
done: *logflagsp = flags; return error; } /* * Remove the entry "free" from the free item list. Prev points to the * previous entry, unless "free" is the head of the list. */ STATIC void xfs_bmap_del_free( xfs_bmap_free_t *flist, /* free item list header */ xfs_bmap_free_item_t *prev, /* previous item on list, if any */ xfs_bmap_free_item_t *free) /* list item to be freed */ { if (prev) prev->xbfi_next = free->xbfi_next; else flist->xbf_first = free->xbfi_next; flist->xbf_count--; kmem_zone_free(xfs_bmap_free_item_zone, free); } /* |
1da177e4c Linux-2.6.12-rc2 |
3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 |
* Convert an extents-format file into a btree-format file. * The new file will have a root block (in the inode) and a single child block. */ STATIC int /* error */ xfs_bmap_extents_to_btree( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_fsblock_t *firstblock, /* first-block-allocated */ xfs_bmap_free_t *flist, /* blocks freed in xaction */ xfs_btree_cur_t **curp, /* cursor returned to caller */ int wasdel, /* converting a delayed alloc */ int *logflagsp, /* inode logging flags */ int whichfork) /* data or attr fork */ { xfs_bmbt_block_t *ablock; /* allocated (child) bt block */ xfs_buf_t *abp; /* buffer for ablock */ xfs_alloc_arg_t args; /* allocation arguments */ xfs_bmbt_rec_t *arp; /* child record pointer */ xfs_bmbt_block_t *block; /* btree root block */ xfs_btree_cur_t *cur; /* bmap btree cursor */ |
a6f64d4ae [XFS] split ondis... |
3391 |
xfs_bmbt_rec_host_t *ep; /* extent record pointer */ |
1da177e4c Linux-2.6.12-rc2 |
3392 |
int error; /* error return value */ |
4eea22f01 [XFS] 929045 5673... |
3393 |
xfs_extnum_t i, cnt; /* extent record index */ |
1da177e4c Linux-2.6.12-rc2 |
3394 3395 3396 |
xfs_ifork_t *ifp; /* inode fork pointer */ xfs_bmbt_key_t *kp; /* root block key pointer */ xfs_mount_t *mp; /* mount structure */ |
4eea22f01 [XFS] 929045 5673... |
3397 |
xfs_extnum_t nextents; /* number of file extents */ |
1da177e4c Linux-2.6.12-rc2 |
3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 |
xfs_bmbt_ptr_t *pp; /* root block address pointer */ ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS); ASSERT(ifp->if_ext_max == XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t)); /* * Make space in the inode incore. */ xfs_iroot_realloc(ip, 1, whichfork); ifp->if_flags |= XFS_IFBROOT; /* * Fill in the root. */ block = ifp->if_broot; |
16259e7d9 [XFS] Endianess a... |
3413 3414 3415 3416 3417 |
block->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC); block->bb_level = cpu_to_be16(1); block->bb_numrecs = cpu_to_be16(1); block->bb_leftsib = cpu_to_be64(NULLDFSBNO); block->bb_rightsib = cpu_to_be64(NULLDFSBNO); |
1da177e4c Linux-2.6.12-rc2 |
3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 |
/* * Need a cursor. Can't allocate until bb_level is filled in. */ mp = ip->i_mount; cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip, whichfork); cur->bc_private.b.firstblock = *firstblock; cur->bc_private.b.flist = flist; cur->bc_private.b.flags = wasdel ? XFS_BTCUR_BPRV_WASDEL : 0; /* * Convert to a btree with two levels, one record in root. */ XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_BTREE); args.tp = tp; args.mp = mp; |
d210a28cd [XFS] In actual a... |
3433 |
args.firstblock = *firstblock; |
1da177e4c Linux-2.6.12-rc2 |
3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 |
if (*firstblock == NULLFSBLOCK) { args.type = XFS_ALLOCTYPE_START_BNO; args.fsbno = XFS_INO_TO_FSB(mp, ip->i_ino); } else if (flist->xbf_low) { args.type = XFS_ALLOCTYPE_START_BNO; args.fsbno = *firstblock; } else { args.type = XFS_ALLOCTYPE_NEAR_BNO; args.fsbno = *firstblock; } args.minlen = args.maxlen = args.prod = 1; args.total = args.minleft = args.alignment = args.mod = args.isfl = args.minalignslop = 0; args.wasdel = wasdel; *logflagsp = 0; if ((error = xfs_alloc_vextent(&args))) { xfs_iroot_realloc(ip, -1, whichfork); xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); return error; } /* * Allocation can't fail, the space was reserved. */ ASSERT(args.fsbno != NULLFSBLOCK); ASSERT(*firstblock == NULLFSBLOCK || args.agno == XFS_FSB_TO_AGNO(mp, *firstblock) || (flist->xbf_low && args.agno > XFS_FSB_TO_AGNO(mp, *firstblock))); *firstblock = cur->bc_private.b.firstblock = args.fsbno; cur->bc_private.b.allocated++; ip->i_d.di_nblocks++; XFS_TRANS_MOD_DQUOT_BYINO(mp, tp, ip, XFS_TRANS_DQ_BCOUNT, 1L); abp = xfs_btree_get_bufl(mp, tp, args.fsbno, 0); /* * Fill in the child block. */ ablock = XFS_BUF_TO_BMBT_BLOCK(abp); |
16259e7d9 [XFS] Endianess a... |
3471 |
ablock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC); |
1da177e4c Linux-2.6.12-rc2 |
3472 |
ablock->bb_level = 0; |
16259e7d9 [XFS] Endianess a... |
3473 3474 |
ablock->bb_leftsib = cpu_to_be64(NULLDFSBNO); ablock->bb_rightsib = cpu_to_be64(NULLDFSBNO); |
1da177e4c Linux-2.6.12-rc2 |
3475 3476 |
arp = XFS_BMAP_REC_IADDR(ablock, 1, cur); nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
4eea22f01 [XFS] 929045 5673... |
3477 3478 |
for (cnt = i = 0; i < nextents; i++) { ep = xfs_iext_get_ext(ifp, i); |
1da177e4c Linux-2.6.12-rc2 |
3479 |
if (!ISNULLSTARTBLOCK(xfs_bmbt_get_startblock(ep))) { |
cd8b0a97b [XFS] endianess a... |
3480 3481 |
arp->l0 = cpu_to_be64(ep->l0); arp->l1 = cpu_to_be64(ep->l1); |
1da177e4c Linux-2.6.12-rc2 |
3482 3483 3484 |
arp++; cnt++; } } |
16259e7d9 [XFS] Endianess a... |
3485 3486 |
ASSERT(cnt == XFS_IFORK_NEXTENTS(ip, whichfork)); ablock->bb_numrecs = cpu_to_be16(cnt); |
1da177e4c Linux-2.6.12-rc2 |
3487 3488 3489 3490 3491 |
/* * Fill in the root key and pointer. */ kp = XFS_BMAP_KEY_IADDR(block, 1, cur); arp = XFS_BMAP_REC_IADDR(ablock, 1, cur); |
8801bb99e [XFS] endianess a... |
3492 |
kp->br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(arp)); |
1da177e4c Linux-2.6.12-rc2 |
3493 |
pp = XFS_BMAP_PTR_IADDR(block, 1, cur); |
576039cf3 [XFS] endianess a... |
3494 |
*pp = cpu_to_be64(args.fsbno); |
1da177e4c Linux-2.6.12-rc2 |
3495 3496 3497 3498 3499 |
/* * Do all this logging at the end so that * the root is at the right level. */ xfs_bmbt_log_block(cur, abp, XFS_BB_ALL_BITS); |
16259e7d9 [XFS] Endianess a... |
3500 |
xfs_bmbt_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs)); |
1da177e4c Linux-2.6.12-rc2 |
3501 3502 3503 3504 3505 3506 3507 |
ASSERT(*curp == NULL); *curp = cur; *logflagsp = XFS_ILOG_CORE | XFS_ILOG_FBROOT(whichfork); return 0; } /* |
d8cc890d4 [XFS] Ondisk form... |
3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 |
* Helper routine to reset inode di_forkoff field when switching * attribute fork from local to extent format - we reset it where * possible to make space available for inline data fork extents. */ STATIC void xfs_bmap_forkoff_reset( xfs_mount_t *mp, xfs_inode_t *ip, int whichfork) { if (whichfork == XFS_ATTR_FORK && (ip->i_d.di_format != XFS_DINODE_FMT_DEV) && (ip->i_d.di_format != XFS_DINODE_FMT_UUID) && |
e5889e90d [XFS] Fix attr2 c... |
3521 |
(ip->i_d.di_format != XFS_DINODE_FMT_BTREE) && |
d8cc890d4 [XFS] Ondisk form... |
3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 |
((mp->m_attroffset >> 3) > ip->i_d.di_forkoff)) { ip->i_d.di_forkoff = mp->m_attroffset >> 3; ip->i_df.if_ext_max = XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t); ip->i_afp->if_ext_max = XFS_IFORK_ASIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t); } } /* |
1da177e4c Linux-2.6.12-rc2 |
3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 |
* Convert a local file to an extents file. * This code is out of bounds for data forks of regular files, * since the file data needs to get logged so things will stay consistent. * (The bmap-level manipulations are ok, though). */ STATIC int /* error */ xfs_bmap_local_to_extents( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode pointer */ xfs_fsblock_t *firstblock, /* first block allocated in xaction */ xfs_extlen_t total, /* total blocks needed by transaction */ int *logflagsp, /* inode logging flags */ int whichfork) /* data or attr fork */ { int error; /* error return value */ int flags; /* logging flags returned */ |
1da177e4c Linux-2.6.12-rc2 |
3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 |
xfs_ifork_t *ifp; /* inode fork pointer */ /* * We don't want to deal with the case of keeping inode data inline yet. * So sending the data fork of a regular inode is invalid. */ ASSERT(!((ip->i_d.di_mode & S_IFMT) == S_IFREG && whichfork == XFS_DATA_FORK)); ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); flags = 0; error = 0; if (ifp->if_bytes) { xfs_alloc_arg_t args; /* allocation arguments */ |
4eea22f01 [XFS] 929045 5673... |
3562 |
xfs_buf_t *bp; /* buffer for extent block */ |
a6f64d4ae [XFS] split ondis... |
3563 |
xfs_bmbt_rec_host_t *ep;/* extent record pointer */ |
1da177e4c Linux-2.6.12-rc2 |
3564 3565 3566 |
args.tp = tp; args.mp = ip->i_mount; |
d210a28cd [XFS] In actual a... |
3567 |
args.firstblock = *firstblock; |
f020b67f3 [XFS] Fix assert ... |
3568 3569 |
ASSERT((ifp->if_flags & (XFS_IFINLINE|XFS_IFEXTENTS|XFS_IFEXTIREC)) == XFS_IFINLINE); |
1da177e4c Linux-2.6.12-rc2 |
3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 |
/* * Allocate a block. We know we need only one, since the * file currently fits in an inode. */ if (*firstblock == NULLFSBLOCK) { args.fsbno = XFS_INO_TO_FSB(args.mp, ip->i_ino); args.type = XFS_ALLOCTYPE_START_BNO; } else { args.fsbno = *firstblock; args.type = XFS_ALLOCTYPE_NEAR_BNO; } args.total = total; args.mod = args.minleft = args.alignment = args.wasdel = args.isfl = args.minalignslop = 0; args.minlen = args.maxlen = args.prod = 1; if ((error = xfs_alloc_vextent(&args))) goto done; /* * Can't fail, the space was reserved. */ ASSERT(args.fsbno != NULLFSBLOCK); ASSERT(args.len == 1); *firstblock = args.fsbno; bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0); memcpy((char *)XFS_BUF_PTR(bp), ifp->if_u1.if_data, ifp->if_bytes); xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1); |
d8cc890d4 [XFS] Ondisk form... |
3597 |
xfs_bmap_forkoff_reset(args.mp, ip, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
3598 |
xfs_idata_realloc(ip, -ifp->if_bytes, whichfork); |
4eea22f01 [XFS] 929045 5673... |
3599 3600 |
xfs_iext_add(ifp, 0, 1); ep = xfs_iext_get_ext(ifp, 0); |
1da177e4c Linux-2.6.12-rc2 |
3601 |
xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM); |
3a59c94c4 [XFS] Clean up fu... |
3602 |
XFS_BMAP_TRACE_POST_UPDATE("new", ip, 0, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
3603 3604 3605 3606 3607 |
XFS_IFORK_NEXT_SET(ip, whichfork, 1); ip->i_d.di_nblocks = 1; XFS_TRANS_MOD_DQUOT_BYINO(args.mp, tp, ip, XFS_TRANS_DQ_BCOUNT, 1L); flags |= XFS_ILOG_FEXT(whichfork); |
d8cc890d4 [XFS] Ondisk form... |
3608 |
} else { |
1da177e4c Linux-2.6.12-rc2 |
3609 |
ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0); |
d8cc890d4 [XFS] Ondisk form... |
3610 3611 |
xfs_bmap_forkoff_reset(ip->i_mount, ip, whichfork); } |
1da177e4c Linux-2.6.12-rc2 |
3612 3613 3614 3615 3616 3617 3618 3619 |
ifp->if_flags &= ~XFS_IFINLINE; ifp->if_flags |= XFS_IFEXTENTS; XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); flags |= XFS_ILOG_CORE; done: *logflagsp = flags; return error; } |
1da177e4c Linux-2.6.12-rc2 |
3620 |
/* |
8867bc9bf [XFS] There are a... |
3621 3622 3623 3624 3625 |
* Search the extent records for the entry containing block bno. * If bno lies in a hole, point to the next entry. If bno lies * past eof, *eofp will be set, and *prevp will contain the last * entry (null if none). Else, *lastxp will be set to the index * of the found entry; *gotp will contain the entry. |
0293ce3a9 [XFS] 929045 5673... |
3626 |
*/ |
a6f64d4ae [XFS] split ondis... |
3627 |
xfs_bmbt_rec_host_t * /* pointer to found extent entry */ |
0293ce3a9 [XFS] 929045 5673... |
3628 3629 3630 3631 3632 3633 3634 3635 |
xfs_bmap_search_multi_extents( xfs_ifork_t *ifp, /* inode fork pointer */ xfs_fileoff_t bno, /* block number searched for */ int *eofp, /* out: end of file found */ xfs_extnum_t *lastxp, /* out: last extent index */ xfs_bmbt_irec_t *gotp, /* out: extent entry found */ xfs_bmbt_irec_t *prevp) /* out: previous extent entry found */ { |
a6f64d4ae [XFS] split ondis... |
3636 |
xfs_bmbt_rec_host_t *ep; /* extent record pointer */ |
0293ce3a9 [XFS] 929045 5673... |
3637 |
xfs_extnum_t lastx; /* last extent index */ |
0293ce3a9 [XFS] 929045 5673... |
3638 3639 |
/* |
8867bc9bf [XFS] There are a... |
3640 3641 |
* Initialize the extent entry structure to catch access to * uninitialized br_startblock field. |
0293ce3a9 [XFS] 929045 5673... |
3642 |
*/ |
8867bc9bf [XFS] There are a... |
3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 |
gotp->br_startoff = 0xffa5a5a5a5a5a5a5LL; gotp->br_blockcount = 0xa55a5a5a5a5a5a5aLL; gotp->br_state = XFS_EXT_INVALID; #if XFS_BIG_BLKNOS gotp->br_startblock = 0xffffa5a5a5a5a5a5LL; #else gotp->br_startblock = 0xffffa5a5; #endif prevp->br_startoff = NULLFILEOFF; ep = xfs_iext_bno_to_ext(ifp, bno, &lastx); if (lastx > 0) { xfs_bmbt_get_all(xfs_iext_get_ext(ifp, lastx - 1), prevp); |
0293ce3a9 [XFS] 929045 5673... |
3656 |
} |
8867bc9bf [XFS] There are a... |
3657 3658 3659 3660 3661 3662 3663 3664 3665 |
if (lastx < (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))) { xfs_bmbt_get_all(ep, gotp); *eofp = 0; } else { if (lastx > 0) { *gotp = *prevp; } *eofp = 1; ep = NULL; |
0293ce3a9 [XFS] 929045 5673... |
3666 |
} |
8867bc9bf [XFS] There are a... |
3667 |
*lastxp = lastx; |
0293ce3a9 [XFS] 929045 5673... |
3668 3669 3670 3671 |
return ep; } /* |
1da177e4c Linux-2.6.12-rc2 |
3672 3673 3674 3675 3676 3677 |
* Search the extents list for the inode, for the extent containing bno. * If bno lies in a hole, point to the next entry. If bno lies past eof, * *eofp will be set, and *prevp will contain the last entry (null if none). * Else, *lastxp will be set to the index of the found * entry; *gotp will contain the entry. */ |
a6f64d4ae [XFS] split ondis... |
3678 |
STATIC xfs_bmbt_rec_host_t * /* pointer to found extent entry */ |
1da177e4c Linux-2.6.12-rc2 |
3679 3680 3681 |
xfs_bmap_search_extents( xfs_inode_t *ip, /* incore inode pointer */ xfs_fileoff_t bno, /* block number searched for */ |
572d95f49 [XFS] Improve err... |
3682 |
int fork, /* data or attr fork */ |
1da177e4c Linux-2.6.12-rc2 |
3683 3684 3685 3686 3687 3688 |
int *eofp, /* out: end of file found */ xfs_extnum_t *lastxp, /* out: last extent index */ xfs_bmbt_irec_t *gotp, /* out: extent entry found */ xfs_bmbt_irec_t *prevp) /* out: previous extent entry found */ { xfs_ifork_t *ifp; /* inode fork pointer */ |
a6f64d4ae [XFS] split ondis... |
3689 |
xfs_bmbt_rec_host_t *ep; /* extent record pointer */ |
1da177e4c Linux-2.6.12-rc2 |
3690 3691 |
XFS_STATS_INC(xs_look_exlist); |
572d95f49 [XFS] Improve err... |
3692 |
ifp = XFS_IFORK_PTR(ip, fork); |
1da177e4c Linux-2.6.12-rc2 |
3693 |
|
0293ce3a9 [XFS] 929045 5673... |
3694 |
ep = xfs_bmap_search_multi_extents(ifp, bno, eofp, lastxp, gotp, prevp); |
572d95f49 [XFS] Improve err... |
3695 3696 3697 3698 3699 3700 3701 3702 |
if (unlikely(!(gotp->br_startblock) && (*lastxp != NULLEXTNUM) && !(XFS_IS_REALTIME_INODE(ip) && fork == XFS_DATA_FORK))) { xfs_cmn_err(XFS_PTAG_FSBLOCK_ZERO, CE_ALERT, ip->i_mount, "Access to block zero in inode %llu " "start_block: %llx start_off: %llx " "blkcnt: %llx extent-state: %x lastx: %x ", (unsigned long long)ip->i_ino, |
3ddb8fa98 [XFS] Sort out co... |
3703 3704 3705 |
(unsigned long long)gotp->br_startblock, (unsigned long long)gotp->br_startoff, (unsigned long long)gotp->br_blockcount, |
572d95f49 [XFS] Improve err... |
3706 3707 3708 3709 3710 3711 |
gotp->br_state, *lastxp); *lastxp = NULLEXTNUM; *eofp = 1; return NULL; } return ep; |
1da177e4c Linux-2.6.12-rc2 |
3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 |
} #ifdef XFS_BMAP_TRACE ktrace_t *xfs_bmap_trace_buf; /* * Add a bmap trace buffer entry. Base routine for the others. */ STATIC void xfs_bmap_trace_addentry( int opcode, /* operation */ |
3a59c94c4 [XFS] Clean up fu... |
3724 |
const char *fname, /* function name */ |
1da177e4c Linux-2.6.12-rc2 |
3725 3726 3727 3728 |
char *desc, /* operation description */ xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* index of entry(ies) */ xfs_extnum_t cnt, /* count of entries, 1 or 2 */ |
a6f64d4ae [XFS] split ondis... |
3729 3730 |
xfs_bmbt_rec_host_t *r1, /* first record */ xfs_bmbt_rec_host_t *r2, /* second record or null */ |
1da177e4c Linux-2.6.12-rc2 |
3731 3732 |
int whichfork) /* data or attr fork */ { |
a6f64d4ae [XFS] split ondis... |
3733 |
xfs_bmbt_rec_host_t tr2; |
1da177e4c Linux-2.6.12-rc2 |
3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 |
ASSERT(cnt == 1 || cnt == 2); ASSERT(r1 != NULL); if (cnt == 1) { ASSERT(r2 == NULL); r2 = &tr2; memset(&tr2, 0, sizeof(tr2)); } else ASSERT(r2 != NULL); ktrace_enter(xfs_bmap_trace_buf, (void *)(__psint_t)(opcode | (whichfork << 16)), (void *)fname, (void *)desc, (void *)ip, (void *)(__psint_t)idx, (void *)(__psint_t)cnt, (void *)(__psunsigned_t)(ip->i_ino >> 32), (void *)(__psunsigned_t)(unsigned)ip->i_ino, (void *)(__psunsigned_t)(r1->l0 >> 32), (void *)(__psunsigned_t)(unsigned)(r1->l0), (void *)(__psunsigned_t)(r1->l1 >> 32), (void *)(__psunsigned_t)(unsigned)(r1->l1), (void *)(__psunsigned_t)(r2->l0 >> 32), (void *)(__psunsigned_t)(unsigned)(r2->l0), (void *)(__psunsigned_t)(r2->l1 >> 32), (void *)(__psunsigned_t)(unsigned)(r2->l1) ); ASSERT(ip->i_xtrace); ktrace_enter(ip->i_xtrace, (void *)(__psint_t)(opcode | (whichfork << 16)), (void *)fname, (void *)desc, (void *)ip, (void *)(__psint_t)idx, (void *)(__psint_t)cnt, (void *)(__psunsigned_t)(ip->i_ino >> 32), (void *)(__psunsigned_t)(unsigned)ip->i_ino, (void *)(__psunsigned_t)(r1->l0 >> 32), (void *)(__psunsigned_t)(unsigned)(r1->l0), (void *)(__psunsigned_t)(r1->l1 >> 32), (void *)(__psunsigned_t)(unsigned)(r1->l1), (void *)(__psunsigned_t)(r2->l0 >> 32), (void *)(__psunsigned_t)(unsigned)(r2->l0), (void *)(__psunsigned_t)(r2->l1 >> 32), (void *)(__psunsigned_t)(unsigned)(r2->l1) ); } /* |
4eea22f01 [XFS] 929045 5673... |
3779 |
* Add bmap trace entry prior to a call to xfs_iext_remove. |
1da177e4c Linux-2.6.12-rc2 |
3780 3781 3782 |
*/ STATIC void xfs_bmap_trace_delete( |
3a59c94c4 [XFS] Clean up fu... |
3783 |
const char *fname, /* function name */ |
1da177e4c Linux-2.6.12-rc2 |
3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 |
char *desc, /* operation description */ xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* index of entry(entries) deleted */ xfs_extnum_t cnt, /* count of entries deleted, 1 or 2 */ int whichfork) /* data or attr fork */ { xfs_ifork_t *ifp; /* inode fork pointer */ ifp = XFS_IFORK_PTR(ip, whichfork); xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_DELETE, fname, desc, ip, idx, |
4eea22f01 [XFS] 929045 5673... |
3794 3795 |
cnt, xfs_iext_get_ext(ifp, idx), cnt == 2 ? xfs_iext_get_ext(ifp, idx + 1) : NULL, |
1da177e4c Linux-2.6.12-rc2 |
3796 3797 3798 3799 |
whichfork); } /* |
4eea22f01 [XFS] 929045 5673... |
3800 |
* Add bmap trace entry prior to a call to xfs_iext_insert, or |
1da177e4c Linux-2.6.12-rc2 |
3801 3802 3803 3804 |
* reading in the extents list from the disk (in the btree). */ STATIC void xfs_bmap_trace_insert( |
3a59c94c4 [XFS] Clean up fu... |
3805 |
const char *fname, /* function name */ |
1da177e4c Linux-2.6.12-rc2 |
3806 3807 3808 3809 3810 3811 3812 3813 |
char *desc, /* operation description */ xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* index of entry(entries) inserted */ xfs_extnum_t cnt, /* count of entries inserted, 1 or 2 */ xfs_bmbt_irec_t *r1, /* inserted record 1 */ xfs_bmbt_irec_t *r2, /* inserted record 2 or null */ int whichfork) /* data or attr fork */ { |
a6f64d4ae [XFS] split ondis... |
3814 3815 |
xfs_bmbt_rec_host_t tr1; /* compressed record 1 */ xfs_bmbt_rec_host_t tr2; /* compressed record 2 if needed */ |
1da177e4c Linux-2.6.12-rc2 |
3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 |
xfs_bmbt_set_all(&tr1, r1); if (cnt == 2) { ASSERT(r2 != NULL); xfs_bmbt_set_all(&tr2, r2); } else { ASSERT(cnt == 1); ASSERT(r2 == NULL); } xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_INSERT, fname, desc, ip, idx, cnt, &tr1, cnt == 2 ? &tr2 : NULL, whichfork); } /* |
4eea22f01 [XFS] 929045 5673... |
3830 |
* Add bmap trace entry after updating an extent record in place. |
1da177e4c Linux-2.6.12-rc2 |
3831 3832 3833 |
*/ STATIC void xfs_bmap_trace_post_update( |
3a59c94c4 [XFS] Clean up fu... |
3834 |
const char *fname, /* function name */ |
1da177e4c Linux-2.6.12-rc2 |
3835 3836 3837 3838 3839 3840 3841 3842 3843 |
char *desc, /* operation description */ xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* index of entry updated */ int whichfork) /* data or attr fork */ { xfs_ifork_t *ifp; /* inode fork pointer */ ifp = XFS_IFORK_PTR(ip, whichfork); xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_POST_UP, fname, desc, ip, idx, |
4eea22f01 [XFS] 929045 5673... |
3844 |
1, xfs_iext_get_ext(ifp, idx), NULL, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
3845 3846 3847 |
} /* |
4eea22f01 [XFS] 929045 5673... |
3848 |
* Add bmap trace entry prior to updating an extent record in place. |
1da177e4c Linux-2.6.12-rc2 |
3849 3850 3851 |
*/ STATIC void xfs_bmap_trace_pre_update( |
3a59c94c4 [XFS] Clean up fu... |
3852 |
const char *fname, /* function name */ |
1da177e4c Linux-2.6.12-rc2 |
3853 3854 3855 3856 3857 3858 3859 3860 3861 |
char *desc, /* operation description */ xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* index of entry to be updated */ int whichfork) /* data or attr fork */ { xfs_ifork_t *ifp; /* inode fork pointer */ ifp = XFS_IFORK_PTR(ip, whichfork); xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_PRE_UP, fname, desc, ip, idx, 1, |
4eea22f01 [XFS] 929045 5673... |
3862 |
xfs_iext_get_ext(ifp, idx), NULL, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 |
} #endif /* XFS_BMAP_TRACE */ /* * Compute the worst-case number of indirect blocks that will be used * for ip's delayed extent of length "len". */ STATIC xfs_filblks_t xfs_bmap_worst_indlen( xfs_inode_t *ip, /* incore inode pointer */ xfs_filblks_t len) /* delayed extent length */ { int level; /* btree level number */ int maxrecs; /* maximum record count at this level */ xfs_mount_t *mp; /* mount structure */ xfs_filblks_t rval; /* return value */ mp = ip->i_mount; maxrecs = mp->m_bmap_dmxr[0]; for (level = 0, rval = 0; level < XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK); level++) { len += maxrecs - 1; do_div(len, maxrecs); rval += len; if (len == 1) return rval + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) - level - 1; if (level == 0) maxrecs = mp->m_bmap_dmxr[1]; } return rval; } #if defined(XFS_RW_TRACE) STATIC void xfs_bunmap_trace( xfs_inode_t *ip, xfs_fileoff_t bno, xfs_filblks_t len, int flags, inst_t *ra) { if (ip->i_rwtrace == NULL) return; ktrace_enter(ip->i_rwtrace, |
3e57ecf64 [XFS] Add paramet... |
3909 |
(void *)(__psint_t)XFS_BUNMAP, |
1da177e4c Linux-2.6.12-rc2 |
3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 |
(void *)ip, (void *)(__psint_t)((ip->i_d.di_size >> 32) & 0xffffffff), (void *)(__psint_t)(ip->i_d.di_size & 0xffffffff), (void *)(__psint_t)(((xfs_dfiloff_t)bno >> 32) & 0xffffffff), (void *)(__psint_t)((xfs_dfiloff_t)bno & 0xffffffff), (void *)(__psint_t)len, (void *)(__psint_t)flags, (void *)(unsigned long)current_cpu(), (void *)ra, (void *)0, (void *)0, (void *)0, (void *)0, (void *)0, (void *)0); } #endif /* * Convert inode from non-attributed to attributed. * Must not be in a transaction, ip must not be locked. */ int /* error code */ xfs_bmap_add_attrfork( xfs_inode_t *ip, /* incore inode pointer */ |
d8cc890d4 [XFS] Ondisk form... |
3935 3936 |
int size, /* space new attribute needs */ int rsvd) /* xact may use reserved blks */ |
1da177e4c Linux-2.6.12-rc2 |
3937 |
{ |
1da177e4c Linux-2.6.12-rc2 |
3938 |
xfs_fsblock_t firstblock; /* 1st block/ag allocated */ |
4eea22f01 [XFS] 929045 5673... |
3939 |
xfs_bmap_free_t flist; /* freed extent records */ |
1da177e4c Linux-2.6.12-rc2 |
3940 |
xfs_mount_t *mp; /* mount structure */ |
1da177e4c Linux-2.6.12-rc2 |
3941 |
xfs_trans_t *tp; /* transaction pointer */ |
d8cc890d4 [XFS] Ondisk form... |
3942 3943 3944 3945 3946 |
int blks; /* space reservation */ int version = 1; /* superblock attr version */ int committed; /* xaction was committed */ int logflags; /* logging flags */ int error; /* error return value */ |
1da177e4c Linux-2.6.12-rc2 |
3947 |
|
d8cc890d4 [XFS] Ondisk form... |
3948 |
ASSERT(XFS_IFORK_Q(ip) == 0); |
1da177e4c Linux-2.6.12-rc2 |
3949 3950 |
ASSERT(ip->i_df.if_ext_max == XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t)); |
d8cc890d4 [XFS] Ondisk form... |
3951 |
|
1da177e4c Linux-2.6.12-rc2 |
3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 |
mp = ip->i_mount; ASSERT(!XFS_NOT_DQATTACHED(mp, ip)); tp = xfs_trans_alloc(mp, XFS_TRANS_ADDAFORK); blks = XFS_ADDAFORK_SPACE_RES(mp); if (rsvd) tp->t_flags |= XFS_TRANS_RESERVE; if ((error = xfs_trans_reserve(tp, blks, XFS_ADDAFORK_LOG_RES(mp), 0, XFS_TRANS_PERM_LOG_RES, XFS_ADDAFORK_LOG_COUNT))) goto error0; xfs_ilock(ip, XFS_ILOCK_EXCL); error = XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, blks, 0, rsvd ? XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES : XFS_QMOPT_RES_REGBLKS); if (error) { xfs_iunlock(ip, XFS_ILOCK_EXCL); xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES); return error; } if (XFS_IFORK_Q(ip)) goto error1; if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS) { /* * For inodes coming from pre-6.2 filesystems. */ ASSERT(ip->i_d.di_aformat == 0); ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS; } ASSERT(ip->i_d.di_anextents == 0); VN_HOLD(XFS_ITOV(ip)); xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); switch (ip->i_d.di_format) { case XFS_DINODE_FMT_DEV: ip->i_d.di_forkoff = roundup(sizeof(xfs_dev_t), 8) >> 3; break; case XFS_DINODE_FMT_UUID: ip->i_d.di_forkoff = roundup(sizeof(uuid_t), 8) >> 3; break; case XFS_DINODE_FMT_LOCAL: case XFS_DINODE_FMT_EXTENTS: case XFS_DINODE_FMT_BTREE: |
d8cc890d4 [XFS] Ondisk form... |
3993 3994 3995 |
ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size); if (!ip->i_d.di_forkoff) ip->i_d.di_forkoff = mp->m_attroffset >> 3; |
13059ff04 [XFS] Reverse the... |
3996 |
else if (mp->m_flags & XFS_MOUNT_ATTR2) |
d8cc890d4 [XFS] Ondisk form... |
3997 |
version = 2; |
1da177e4c Linux-2.6.12-rc2 |
3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 |
break; default: ASSERT(0); error = XFS_ERROR(EINVAL); goto error1; } ip->i_df.if_ext_max = XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t); ASSERT(ip->i_afp == NULL); ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP); ip->i_afp->if_ext_max = XFS_IFORK_ASIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t); ip->i_afp->if_flags = XFS_IFEXTENTS; logflags = 0; XFS_BMAP_INIT(&flist, &firstblock); switch (ip->i_d.di_format) { case XFS_DINODE_FMT_LOCAL: error = xfs_bmap_add_attrfork_local(tp, ip, &firstblock, &flist, &logflags); break; case XFS_DINODE_FMT_EXTENTS: error = xfs_bmap_add_attrfork_extents(tp, ip, &firstblock, &flist, &logflags); break; case XFS_DINODE_FMT_BTREE: error = xfs_bmap_add_attrfork_btree(tp, ip, &firstblock, &flist, &logflags); break; default: error = 0; break; } if (logflags) xfs_trans_log_inode(tp, ip, logflags); if (error) goto error2; |
621187099 [XFS] remove shou... |
4034 4035 |
if (!xfs_sb_version_hasattr(&mp->m_sb) || (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2)) { |
da087bad8 [XFS] Fix up a 32... |
4036 |
__int64_t sbfields = 0; |
3685c2a1d [XFS] Unwrap XFS_... |
4037 |
spin_lock(&mp->m_sb_lock); |
621187099 [XFS] remove shou... |
4038 4039 |
if (!xfs_sb_version_hasattr(&mp->m_sb)) { xfs_sb_version_addattr(&mp->m_sb); |
da087bad8 [XFS] Fix up a 32... |
4040 |
sbfields |= XFS_SB_VERSIONNUM; |
d8cc890d4 [XFS] Ondisk form... |
4041 |
} |
621187099 [XFS] remove shou... |
4042 4043 |
if (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2) { xfs_sb_version_addattr2(&mp->m_sb); |
da087bad8 [XFS] Fix up a 32... |
4044 |
sbfields |= (XFS_SB_VERSIONNUM | XFS_SB_FEATURES2); |
d8cc890d4 [XFS] Ondisk form... |
4045 |
} |
da087bad8 [XFS] Fix up a 32... |
4046 |
if (sbfields) { |
3685c2a1d [XFS] Unwrap XFS_... |
4047 |
spin_unlock(&mp->m_sb_lock); |
da087bad8 [XFS] Fix up a 32... |
4048 |
xfs_mod_sb(tp, sbfields); |
1da177e4c Linux-2.6.12-rc2 |
4049 |
} else |
3685c2a1d [XFS] Unwrap XFS_... |
4050 |
spin_unlock(&mp->m_sb_lock); |
1da177e4c Linux-2.6.12-rc2 |
4051 |
} |
f7c99b6fc [XFS] Remove unus... |
4052 |
if ((error = xfs_bmap_finish(&tp, &flist, &committed))) |
1da177e4c Linux-2.6.12-rc2 |
4053 |
goto error2; |
1c72bf900 [XFS] The last ar... |
4054 |
error = xfs_trans_commit(tp, XFS_TRANS_PERM_LOG_RES); |
1da177e4c Linux-2.6.12-rc2 |
4055 4056 4057 4058 4059 4060 |
ASSERT(ip->i_df.if_ext_max == XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t)); return error; error2: xfs_bmap_cancel(&flist); error1: |
1da177e4c Linux-2.6.12-rc2 |
4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 |
xfs_iunlock(ip, XFS_ILOCK_EXCL); error0: xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT); ASSERT(ip->i_df.if_ext_max == XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t)); return error; } /* * Add the extent to the list of extents to be free at transaction end. * The list is maintained sorted (by block number). */ /* ARGSUSED */ void xfs_bmap_add_free( xfs_fsblock_t bno, /* fs block number of extent */ xfs_filblks_t len, /* length of extent */ xfs_bmap_free_t *flist, /* list of extents */ xfs_mount_t *mp) /* mount point structure */ { xfs_bmap_free_item_t *cur; /* current (next) element */ xfs_bmap_free_item_t *new; /* new element */ xfs_bmap_free_item_t *prev; /* previous element */ #ifdef DEBUG xfs_agnumber_t agno; xfs_agblock_t agbno; ASSERT(bno != NULLFSBLOCK); ASSERT(len > 0); ASSERT(len <= MAXEXTLEN); ASSERT(!ISNULLSTARTBLOCK(bno)); agno = XFS_FSB_TO_AGNO(mp, bno); agbno = XFS_FSB_TO_AGBNO(mp, bno); ASSERT(agno < mp->m_sb.sb_agcount); ASSERT(agbno < mp->m_sb.sb_agblocks); ASSERT(len < mp->m_sb.sb_agblocks); ASSERT(agbno + len <= mp->m_sb.sb_agblocks); #endif ASSERT(xfs_bmap_free_item_zone != NULL); new = kmem_zone_alloc(xfs_bmap_free_item_zone, KM_SLEEP); new->xbfi_startblock = bno; new->xbfi_blockcount = (xfs_extlen_t)len; for (prev = NULL, cur = flist->xbf_first; cur != NULL; prev = cur, cur = cur->xbfi_next) { if (cur->xbfi_startblock >= bno) break; } if (prev) prev->xbfi_next = new; else flist->xbf_first = new; new->xbfi_next = cur; flist->xbf_count++; } /* * Compute and fill in the value of the maximum depth of a bmap btree * in this filesystem. Done once, during mount. */ void xfs_bmap_compute_maxlevels( xfs_mount_t *mp, /* file system mount structure */ int whichfork) /* data or attr fork */ { int level; /* btree level */ uint maxblocks; /* max blocks at this level */ uint maxleafents; /* max leaf entries possible */ int maxrootrecs; /* max records in root block */ int minleafrecs; /* min records in leaf block */ int minnoderecs; /* min records in node block */ int sz; /* root block size */ /* * The maximum number of extents in a file, hence the maximum * number of leaf entries, is controlled by the type of di_nextents * (a signed 32-bit number, xfs_extnum_t), or by di_anextents * (a signed 16-bit number, xfs_aextnum_t). |
6d1337b29 [XFS] xfs_bmap_co... |
4139 4140 4141 4142 4143 4144 4145 4146 |
* * Note that we can no longer assume that if we are in ATTR1 that * the fork offset of all the inodes will be (m_attroffset >> 3) * because we could have mounted with ATTR2 and then mounted back * with ATTR1, keeping the di_forkoff's fixed but probably at * various positions. Therefore, for both ATTR1 and ATTR2 * we have to assume the worst case scenario of a minimum size * available. |
1da177e4c Linux-2.6.12-rc2 |
4147 |
*/ |
d8cc890d4 [XFS] Ondisk form... |
4148 4149 |
if (whichfork == XFS_DATA_FORK) { maxleafents = MAXEXTNUM; |
6d1337b29 [XFS] xfs_bmap_co... |
4150 |
sz = XFS_BMDR_SPACE_CALC(MINDBTPTRS); |
d8cc890d4 [XFS] Ondisk form... |
4151 4152 |
} else { maxleafents = MAXAEXTNUM; |
6d1337b29 [XFS] xfs_bmap_co... |
4153 |
sz = XFS_BMDR_SPACE_CALC(MINABTPTRS); |
d8cc890d4 [XFS] Ondisk form... |
4154 4155 |
} maxrootrecs = (int)XFS_BTREE_BLOCK_MAXRECS(sz, xfs_bmdr, 0); |
1da177e4c Linux-2.6.12-rc2 |
4156 4157 |
minleafrecs = mp->m_bmap_dmnr[0]; minnoderecs = mp->m_bmap_dmnr[1]; |
1da177e4c Linux-2.6.12-rc2 |
4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 |
maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs; for (level = 1; maxblocks > 1; level++) { if (maxblocks <= maxrootrecs) maxblocks = 1; else maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs; } mp->m_bm_maxlevels[whichfork] = level; } /* * Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi * caller. Frees all the extents that need freeing, which must be done * last due to locking considerations. We never free any extents in * the first transaction. This is to allow the caller to make the first * transaction a synchronous one so that the pointers to the data being * broken in this transaction will be permanent before the data is actually * freed. This is necessary to prevent blocks from being reallocated * and written to before the free and reallocation are actually permanent. * We do not just make the first transaction synchronous here, because * there are more efficient ways to gain the same protection in some cases * (see the file truncation code). * * Return 1 if the given transaction was committed and a new one * started, and 0 otherwise in the committed parameter. */ /*ARGSUSED*/ int /* error */ xfs_bmap_finish( xfs_trans_t **tp, /* transaction pointer addr */ xfs_bmap_free_t *flist, /* i/o: list extents to free */ |
1da177e4c Linux-2.6.12-rc2 |
4189 4190 4191 4192 4193 |
int *committed) /* xact committed or not */ { xfs_efd_log_item_t *efd; /* extent free data */ xfs_efi_log_item_t *efi; /* extent free intention */ int error; /* error return value */ |
4eea22f01 [XFS] 929045 5673... |
4194 |
xfs_bmap_free_item_t *free; /* free extent item */ |
1da177e4c Linux-2.6.12-rc2 |
4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 |
unsigned int logres; /* new log reservation */ unsigned int logcount; /* new log count */ xfs_mount_t *mp; /* filesystem mount structure */ xfs_bmap_free_item_t *next; /* next item on free list */ xfs_trans_t *ntp; /* new transaction pointer */ ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES); if (flist->xbf_count == 0) { *committed = 0; return 0; } ntp = *tp; efi = xfs_trans_get_efi(ntp, flist->xbf_count); for (free = flist->xbf_first; free; free = free->xbfi_next) xfs_trans_log_efi_extent(ntp, efi, free->xbfi_startblock, free->xbfi_blockcount); logres = ntp->t_log_res; logcount = ntp->t_log_count; ntp = xfs_trans_dup(*tp); |
1c72bf900 [XFS] The last ar... |
4214 |
error = xfs_trans_commit(*tp, 0); |
1da177e4c Linux-2.6.12-rc2 |
4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 |
*tp = ntp; *committed = 1; /* * We have a new transaction, so we should return committed=1, * even though we're returning an error. */ if (error) { return error; } if ((error = xfs_trans_reserve(ntp, 0, logres, 0, XFS_TRANS_PERM_LOG_RES, logcount))) return error; efd = xfs_trans_get_efd(ntp, efi, flist->xbf_count); for (free = flist->xbf_first; free != NULL; free = next) { next = free->xbfi_next; if ((error = xfs_free_extent(ntp, free->xbfi_startblock, free->xbfi_blockcount))) { /* * The bmap free list will be cleaned up at a * higher level. The EFI will be canceled when * this transaction is aborted. * Need to force shutdown here to make sure it * happens, since this transaction may not be * dirty yet. */ mp = ntp->t_mountp; if (!XFS_FORCED_SHUTDOWN(mp)) xfs_force_shutdown(mp, (error == EFSCORRUPTED) ? |
7d04a335b [XFS] Shutdown th... |
4244 4245 |
SHUTDOWN_CORRUPT_INCORE : SHUTDOWN_META_IO_ERROR); |
1da177e4c Linux-2.6.12-rc2 |
4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 |
return error; } xfs_trans_log_efd_extent(ntp, efd, free->xbfi_startblock, free->xbfi_blockcount); xfs_bmap_del_free(flist, NULL, free); } return 0; } /* * Free up any items left in the list. */ void xfs_bmap_cancel( xfs_bmap_free_t *flist) /* list of bmap_free_items */ { xfs_bmap_free_item_t *free; /* free list item */ xfs_bmap_free_item_t *next; if (flist->xbf_count == 0) return; ASSERT(flist->xbf_first != NULL); for (free = flist->xbf_first; free; free = next) { next = free->xbfi_next; xfs_bmap_del_free(flist, NULL, free); } ASSERT(flist->xbf_count == 0); } /* * Returns the file-relative block number of the first unused block(s) * in the file with at least "len" logically contiguous blocks free. * This is the lowest-address hole if the file has holes, else the first block * past the end of file. * Return 0 if the file is currently local (in-inode). */ int /* error */ xfs_bmap_first_unused( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode */ xfs_extlen_t len, /* size of hole to find */ xfs_fileoff_t *first_unused, /* unused block */ int whichfork) /* data or attr fork */ { |
1da177e4c Linux-2.6.12-rc2 |
4290 |
int error; /* error return value */ |
4eea22f01 [XFS] 929045 5673... |
4291 |
int idx; /* extent record index */ |
1da177e4c Linux-2.6.12-rc2 |
4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 |
xfs_ifork_t *ifp; /* inode fork pointer */ xfs_fileoff_t lastaddr; /* last block number seen */ xfs_fileoff_t lowest; /* lowest useful block */ xfs_fileoff_t max; /* starting useful block */ xfs_fileoff_t off; /* offset for this block */ xfs_extnum_t nextents; /* number of extent entries */ ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE || XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS || XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { *first_unused = 0; return 0; } ifp = XFS_IFORK_PTR(ip, whichfork); if (!(ifp->if_flags & XFS_IFEXTENTS) && (error = xfs_iread_extents(tp, ip, whichfork))) return error; lowest = *first_unused; nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
4eea22f01 [XFS] 929045 5673... |
4312 |
for (idx = 0, lastaddr = 0, max = lowest; idx < nextents; idx++) { |
a6f64d4ae [XFS] split ondis... |
4313 |
xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx); |
1da177e4c Linux-2.6.12-rc2 |
4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 |
off = xfs_bmbt_get_startoff(ep); /* * See if the hole before this extent will work. */ if (off >= lowest + len && off - max >= len) { *first_unused = max; return 0; } lastaddr = off + xfs_bmbt_get_blockcount(ep); max = XFS_FILEOFF_MAX(lastaddr, lowest); } *first_unused = max; return 0; } /* * Returns the file-relative block number of the last block + 1 before * last_block (input value) in the file. |
4eea22f01 [XFS] 929045 5673... |
4332 4333 |
* This is not based on i_size, it is based on the extent records. * Returns 0 for local files, as they do not have extent records. |
1da177e4c Linux-2.6.12-rc2 |
4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 |
*/ int /* error */ xfs_bmap_last_before( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode */ xfs_fileoff_t *last_block, /* last block */ int whichfork) /* data or attr fork */ { xfs_fileoff_t bno; /* input file offset */ int eof; /* hit end of file */ |
a6f64d4ae [XFS] split ondis... |
4344 |
xfs_bmbt_rec_host_t *ep; /* pointer to last extent */ |
1da177e4c Linux-2.6.12-rc2 |
4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 |
int error; /* error return value */ xfs_bmbt_irec_t got; /* current extent value */ xfs_ifork_t *ifp; /* inode fork pointer */ xfs_extnum_t lastx; /* last extent used */ xfs_bmbt_irec_t prev; /* previous extent value */ if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL) return XFS_ERROR(EIO); if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { *last_block = 0; return 0; } ifp = XFS_IFORK_PTR(ip, whichfork); if (!(ifp->if_flags & XFS_IFEXTENTS) && (error = xfs_iread_extents(tp, ip, whichfork))) return error; bno = *last_block - 1; ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got, &prev); if (eof || xfs_bmbt_get_startoff(ep) > bno) { if (prev.br_startoff == NULLFILEOFF) *last_block = 0; else *last_block = prev.br_startoff + prev.br_blockcount; } /* * Otherwise *last_block is already the right answer. */ return 0; } /* * Returns the file-relative block number of the first block past eof in |
4eea22f01 [XFS] 929045 5673... |
4380 4381 |
* the file. This is not based on i_size, it is based on the extent records. * Returns 0 for local files, as they do not have extent records. |
1da177e4c Linux-2.6.12-rc2 |
4382 4383 4384 4385 4386 4387 4388 4389 |
*/ int /* error */ xfs_bmap_last_offset( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode */ xfs_fileoff_t *last_block, /* last block */ int whichfork) /* data or attr fork */ { |
a6f64d4ae [XFS] split ondis... |
4390 |
xfs_bmbt_rec_host_t *ep; /* pointer to last extent */ |
1da177e4c Linux-2.6.12-rc2 |
4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 |
int error; /* error return value */ xfs_ifork_t *ifp; /* inode fork pointer */ xfs_extnum_t nextents; /* number of extent entries */ if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL) return XFS_ERROR(EIO); if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { *last_block = 0; return 0; } ifp = XFS_IFORK_PTR(ip, whichfork); if (!(ifp->if_flags & XFS_IFEXTENTS) && (error = xfs_iread_extents(tp, ip, whichfork))) return error; nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); if (!nextents) { *last_block = 0; return 0; } |
4eea22f01 [XFS] 929045 5673... |
4412 |
ep = xfs_iext_get_ext(ifp, nextents - 1); |
1da177e4c Linux-2.6.12-rc2 |
4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 |
*last_block = xfs_bmbt_get_startoff(ep) + xfs_bmbt_get_blockcount(ep); return 0; } /* * Returns whether the selected fork of the inode has exactly one * block or not. For the data fork we check this matches di_size, * implying the file's range is 0..bsize-1. */ int /* 1=>1 block, 0=>otherwise */ xfs_bmap_one_block( xfs_inode_t *ip, /* incore inode */ int whichfork) /* data or attr fork */ { |
a6f64d4ae [XFS] split ondis... |
4427 |
xfs_bmbt_rec_host_t *ep; /* ptr to fork's extent */ |
1da177e4c Linux-2.6.12-rc2 |
4428 4429 4430 4431 4432 |
xfs_ifork_t *ifp; /* inode fork pointer */ int rval; /* return value */ xfs_bmbt_irec_t s; /* internal version of extent */ #ifndef DEBUG |
ba87ea699 [XFS] Fix to prev... |
4433 4434 4435 4436 4437 |
if (whichfork == XFS_DATA_FORK) { return ((ip->i_d.di_mode & S_IFMT) == S_IFREG) ? (ip->i_size == ip->i_mount->m_sb.sb_blocksize) : (ip->i_d.di_size == ip->i_mount->m_sb.sb_blocksize); } |
1da177e4c Linux-2.6.12-rc2 |
4438 4439 4440 4441 4442 4443 4444 |
#endif /* !DEBUG */ if (XFS_IFORK_NEXTENTS(ip, whichfork) != 1) return 0; if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) return 0; ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(ifp->if_flags & XFS_IFEXTENTS); |
4eea22f01 [XFS] 929045 5673... |
4445 |
ep = xfs_iext_get_ext(ifp, 0); |
1da177e4c Linux-2.6.12-rc2 |
4446 4447 4448 |
xfs_bmbt_get_all(ep, &s); rval = s.br_startoff == 0 && s.br_blockcount == 1; if (rval && whichfork == XFS_DATA_FORK) |
ba87ea699 [XFS] Fix to prev... |
4449 |
ASSERT(ip->i_size == ip->i_mount->m_sb.sb_blocksize); |
1da177e4c Linux-2.6.12-rc2 |
4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 |
return rval; } /* * Read in the extents to if_extents. * All inode fields are set up by caller, we just traverse the btree * and copy the records in. If the file system cannot contain unwritten * extents, the records are checked for no "state" flags. */ int /* error */ xfs_bmap_read_extents( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode */ int whichfork) /* data or attr fork */ { xfs_bmbt_block_t *block; /* current btree block */ xfs_fsblock_t bno; /* block # of "block" */ xfs_buf_t *bp; /* buffer for "block" */ int error; /* error return value */ xfs_exntfmt_t exntf; /* XFS_EXTFMT_NOSTATE, if checking */ |
1da177e4c Linux-2.6.12-rc2 |
4470 4471 4472 4473 |
xfs_extnum_t i, j; /* index into the extents list */ xfs_ifork_t *ifp; /* fork structure */ int level; /* btree level, for checking */ xfs_mount_t *mp; /* file system mount structure */ |
576039cf3 [XFS] endianess a... |
4474 |
__be64 *pp; /* pointer to block address */ |
1da177e4c Linux-2.6.12-rc2 |
4475 4476 |
/* REFERENCED */ xfs_extnum_t room; /* number of entries there's room for */ |
1da177e4c Linux-2.6.12-rc2 |
4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 |
bno = NULLFSBLOCK; mp = ip->i_mount; ifp = XFS_IFORK_PTR(ip, whichfork); exntf = (whichfork != XFS_DATA_FORK) ? XFS_EXTFMT_NOSTATE : XFS_EXTFMT_INODE(ip); block = ifp->if_broot; /* * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. */ |
16259e7d9 [XFS] Endianess a... |
4487 4488 |
level = be16_to_cpu(block->bb_level); ASSERT(level > 0); |
1da177e4c Linux-2.6.12-rc2 |
4489 |
pp = XFS_BMAP_BROOT_PTR_ADDR(block, 1, ifp->if_broot_bytes); |
576039cf3 [XFS] endianess a... |
4490 4491 4492 4493 |
bno = be64_to_cpu(*pp); ASSERT(bno != NULLDFSBNO); ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); |
1da177e4c Linux-2.6.12-rc2 |
4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 |
/* * Go down the tree until leaf level is reached, following the first * pointer (leftmost) at each level. */ while (level-- > 0) { if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF))) return error; block = XFS_BUF_TO_BMBT_BLOCK(bp); XFS_WANT_CORRUPTED_GOTO( XFS_BMAP_SANITY_CHECK(mp, block, level), error0); if (level == 0) break; |
2c36ddeda [XFS] Remove unus... |
4508 |
pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]); |
576039cf3 [XFS] endianess a... |
4509 4510 |
bno = be64_to_cpu(*pp); XFS_WANT_CORRUPTED_GOTO(XFS_FSB_SANITY_CHECK(mp, bno), error0); |
1da177e4c Linux-2.6.12-rc2 |
4511 4512 4513 4514 4515 |
xfs_trans_brelse(tp, bp); } /* * Here with bp and block set to the leftmost leaf node in the tree. */ |
4eea22f01 [XFS] 929045 5673... |
4516 |
room = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
1da177e4c Linux-2.6.12-rc2 |
4517 4518 |
i = 0; /* |
4eea22f01 [XFS] 929045 5673... |
4519 |
* Loop over all leaf nodes. Copy information to the extent records. |
1da177e4c Linux-2.6.12-rc2 |
4520 4521 |
*/ for (;;) { |
a6f64d4ae [XFS] split ondis... |
4522 |
xfs_bmbt_rec_t *frp; |
1da177e4c Linux-2.6.12-rc2 |
4523 4524 |
xfs_fsblock_t nextbno; xfs_extnum_t num_recs; |
4eea22f01 [XFS] 929045 5673... |
4525 |
xfs_extnum_t start; |
1da177e4c Linux-2.6.12-rc2 |
4526 |
|
16259e7d9 [XFS] Endianess a... |
4527 |
num_recs = be16_to_cpu(block->bb_numrecs); |
1da177e4c Linux-2.6.12-rc2 |
4528 4529 |
if (unlikely(i + num_recs > room)) { ASSERT(i + num_recs <= room); |
3762ec6bf [XFS] Merge in tr... |
4530 4531 |
xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount, "corrupt dinode %Lu, (btree extents).", |
1da177e4c Linux-2.6.12-rc2 |
4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 |
(unsigned long long) ip->i_ino); XFS_ERROR_REPORT("xfs_bmap_read_extents(1)", XFS_ERRLEVEL_LOW, ip->i_mount); goto error0; } XFS_WANT_CORRUPTED_GOTO( XFS_BMAP_SANITY_CHECK(mp, block, 0), error0); /* * Read-ahead the next leaf block, if any. */ |
16259e7d9 [XFS] Endianess a... |
4544 |
nextbno = be64_to_cpu(block->bb_rightsib); |
1da177e4c Linux-2.6.12-rc2 |
4545 4546 4547 |
if (nextbno != NULLFSBLOCK) xfs_btree_reada_bufl(mp, nextbno, 1); /* |
4eea22f01 [XFS] 929045 5673... |
4548 |
* Copy records into the extent records. |
1da177e4c Linux-2.6.12-rc2 |
4549 |
*/ |
2c36ddeda [XFS] Remove unus... |
4550 |
frp = XFS_BTREE_REC_ADDR(xfs_bmbt, block, 1); |
4eea22f01 [XFS] 929045 5673... |
4551 4552 |
start = i; for (j = 0; j < num_recs; j++, i++, frp++) { |
a6f64d4ae [XFS] split ondis... |
4553 |
xfs_bmbt_rec_host_t *trp = xfs_iext_get_ext(ifp, i); |
cd8b0a97b [XFS] endianess a... |
4554 4555 |
trp->l0 = be64_to_cpu(frp->l0); trp->l1 = be64_to_cpu(frp->l1); |
1da177e4c Linux-2.6.12-rc2 |
4556 4557 4558 4559 4560 4561 4562 |
} if (exntf == XFS_EXTFMT_NOSTATE) { /* * Check all attribute bmap btree records and * any "older" data bmap btree records for a * set bit in the "extent flag" position. */ |
4eea22f01 [XFS] 929045 5673... |
4563 4564 |
if (unlikely(xfs_check_nostate_extents(ifp, start, num_recs))) { |
1da177e4c Linux-2.6.12-rc2 |
4565 4566 4567 4568 4569 4570 |
XFS_ERROR_REPORT("xfs_bmap_read_extents(2)", XFS_ERRLEVEL_LOW, ip->i_mount); goto error0; } } |
1da177e4c Linux-2.6.12-rc2 |
4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 |
xfs_trans_brelse(tp, bp); bno = nextbno; /* * If we've reached the end, stop. */ if (bno == NULLFSBLOCK) break; if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF))) return error; block = XFS_BUF_TO_BMBT_BLOCK(bp); } |
4eea22f01 [XFS] 929045 5673... |
4583 |
ASSERT(i == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))); |
1da177e4c Linux-2.6.12-rc2 |
4584 |
ASSERT(i == XFS_IFORK_NEXTENTS(ip, whichfork)); |
3a59c94c4 [XFS] Clean up fu... |
4585 |
XFS_BMAP_TRACE_EXLIST(ip, i, whichfork); |
1da177e4c Linux-2.6.12-rc2 |
4586 4587 4588 4589 4590 4591 4592 4593 |
return 0; error0: xfs_trans_brelse(tp, bp); return XFS_ERROR(EFSCORRUPTED); } #ifdef XFS_BMAP_TRACE /* |
4eea22f01 [XFS] 929045 5673... |
4594 |
* Add bmap trace insert entries for all the contents of the extent records. |
1da177e4c Linux-2.6.12-rc2 |
4595 4596 4597 |
*/ void xfs_bmap_trace_exlist( |
3a59c94c4 [XFS] Clean up fu... |
4598 |
const char *fname, /* function name */ |
1da177e4c Linux-2.6.12-rc2 |
4599 4600 4601 4602 |
xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t cnt, /* count of entries in the list */ int whichfork) /* data or attr fork */ { |
a6f64d4ae [XFS] split ondis... |
4603 |
xfs_bmbt_rec_host_t *ep; /* current extent record */ |
4eea22f01 [XFS] 929045 5673... |
4604 |
xfs_extnum_t idx; /* extent record index */ |
1da177e4c Linux-2.6.12-rc2 |
4605 |
xfs_ifork_t *ifp; /* inode fork pointer */ |
4eea22f01 [XFS] 929045 5673... |
4606 |
xfs_bmbt_irec_t s; /* file extent record */ |
1da177e4c Linux-2.6.12-rc2 |
4607 4608 |
ifp = XFS_IFORK_PTR(ip, whichfork); |
4eea22f01 [XFS] 929045 5673... |
4609 4610 4611 |
ASSERT(cnt == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))); for (idx = 0; idx < cnt; idx++) { ep = xfs_iext_get_ext(ifp, idx); |
1da177e4c Linux-2.6.12-rc2 |
4612 |
xfs_bmbt_get_all(ep, &s); |
3a59c94c4 [XFS] Clean up fu... |
4613 |
XFS_BMAP_TRACE_INSERT("exlist", ip, idx, 1, &s, NULL, |
1da177e4c Linux-2.6.12-rc2 |
4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 |
whichfork); } } #endif #ifdef DEBUG /* * Validate that the bmbt_irecs being returned from bmapi are valid * given the callers original parameters. Specifically check the * ranges of the returned irecs to ensure that they only extent beyond * the given parameters if the XFS_BMAPI_ENTIRE flag was set. */ STATIC void xfs_bmap_validate_ret( xfs_fileoff_t bno, xfs_filblks_t len, int flags, xfs_bmbt_irec_t *mval, int nmap, int ret_nmap) { int i; /* index to map values */ ASSERT(ret_nmap <= nmap); for (i = 0; i < ret_nmap; i++) { ASSERT(mval[i].br_blockcount > 0); if (!(flags & XFS_BMAPI_ENTIRE)) { ASSERT(mval[i].br_startoff >= bno); ASSERT(mval[i].br_blockcount <= len); ASSERT(mval[i].br_startoff + mval[i].br_blockcount <= bno + len); } else { ASSERT(mval[i].br_startoff < bno + len); ASSERT(mval[i].br_startoff + mval[i].br_blockcount > bno); } ASSERT(i == 0 || mval[i - 1].br_startoff + mval[i - 1].br_blockcount == mval[i].br_startoff); if ((flags & XFS_BMAPI_WRITE) && !(flags & XFS_BMAPI_DELAY)) ASSERT(mval[i].br_startblock != DELAYSTARTBLOCK && mval[i].br_startblock != HOLESTARTBLOCK); ASSERT(mval[i].br_state == XFS_EXT_NORM || mval[i].br_state == XFS_EXT_UNWRITTEN); } } #endif /* DEBUG */ /* * Map file blocks to filesystem blocks. * File range is given by the bno/len pair. * Adds blocks to file if a write ("flags & XFS_BMAPI_WRITE" set) * into a hole or past eof. * Only allocates blocks from a single allocation group, * to avoid locking problems. * The returned value in "firstblock" from the first call in a transaction * must be remembered and presented to subsequent calls in "firstblock". * An upper bound for the number of blocks to be allocated is supplied to * the first call in "total"; if no allocation group has that many free * blocks then the call will fail (return NULLFSBLOCK in "firstblock"). */ int /* error */ xfs_bmapi( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode */ xfs_fileoff_t bno, /* starting file offs. mapped */ xfs_filblks_t len, /* length to map in file */ int flags, /* XFS_BMAPI_... */ xfs_fsblock_t *firstblock, /* first allocated block controls a.g. for allocs */ xfs_extlen_t total, /* total blocks needed */ xfs_bmbt_irec_t *mval, /* output: map values */ int *nmap, /* i/o: mval size/count */ |
3e57ecf64 [XFS] Add paramet... |
4689 4690 |
xfs_bmap_free_t *flist, /* i/o: list extents to free */ xfs_extdelta_t *delta) /* o: change made to incore extents */ |
1da177e4c Linux-2.6.12-rc2 |
4691 4692 4693 4694 4695 |
{ xfs_fsblock_t abno; /* allocated block number */ xfs_extlen_t alen; /* allocated extent length */ xfs_fileoff_t aoff; /* allocated file offset */ xfs_bmalloca_t bma; /* args for xfs_bmap_alloc */ |
1da177e4c Linux-2.6.12-rc2 |
4696 |
xfs_btree_cur_t *cur; /* bmap btree cursor */ |
1da177e4c Linux-2.6.12-rc2 |
4697 |
xfs_fileoff_t end; /* end of mapped file region */ |
4eea22f01 [XFS] 929045 5673... |
4698 |
int eof; /* we've hit the end of extents */ |
a6f64d4ae [XFS] split ondis... |
4699 |
xfs_bmbt_rec_host_t *ep; /* extent record pointer */ |
1da177e4c Linux-2.6.12-rc2 |
4700 |
int error; /* error return */ |
4eea22f01 [XFS] 929045 5673... |
4701 |
xfs_bmbt_irec_t got; /* current file extent record */ |
1da177e4c Linux-2.6.12-rc2 |
4702 4703 |
xfs_ifork_t *ifp; /* inode fork pointer */ xfs_extlen_t indlen; /* indirect blocks length */ |
1da177e4c Linux-2.6.12-rc2 |
4704 4705 4706 4707 4708 4709 4710 4711 4712 |
xfs_extnum_t lastx; /* last useful extent number */ int logflags; /* flags for transaction logging */ xfs_extlen_t minleft; /* min blocks left after allocation */ xfs_extlen_t minlen; /* min allocation size */ xfs_mount_t *mp; /* xfs mount structure */ int n; /* current extent index */ int nallocs; /* number of extents alloc\'d */ xfs_extnum_t nextents; /* number of extents in file */ xfs_fileoff_t obno; /* old block number (offset) */ |
4eea22f01 [XFS] 929045 5673... |
4713 |
xfs_bmbt_irec_t prev; /* previous file extent record */ |
1da177e4c Linux-2.6.12-rc2 |
4714 |
int tmp_logflags; /* temp flags holder */ |
06d10dd9c [XFS] Merge fixes... |
4715 4716 |
int whichfork; /* data or attr fork */ char inhole; /* current location is hole in file */ |
1da177e4c Linux-2.6.12-rc2 |
4717 |
char wasdelay; /* old extent was delayed */ |
1da177e4c Linux-2.6.12-rc2 |
4718 |
char wr; /* this is a write request */ |
06d10dd9c [XFS] Merge fixes... |
4719 |
char rt; /* this is a realtime file */ |
1da177e4c Linux-2.6.12-rc2 |
4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 |
#ifdef DEBUG xfs_fileoff_t orig_bno; /* original block number value */ int orig_flags; /* original flags arg value */ xfs_filblks_t orig_len; /* original value of len arg */ xfs_bmbt_irec_t *orig_mval; /* original value of mval */ int orig_nmap; /* original value of *nmap */ orig_bno = bno; orig_len = len; orig_flags = flags; orig_mval = mval; orig_nmap = *nmap; #endif ASSERT(*nmap >= 1); ASSERT(*nmap <= XFS_BMAP_MAX_NMAP || !(flags & XFS_BMAPI_WRITE)); whichfork = (flags & XFS_BMAPI_ATTRFORK) ? XFS_ATTR_FORK : XFS_DATA_FORK; mp = ip->i_mount; if (unlikely(XFS_TEST_ERROR( (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL), mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { XFS_ERROR_REPORT("xfs_bmapi", XFS_ERRLEVEL_LOW, mp); return XFS_ERROR(EFSCORRUPTED); } if (XFS_FORCED_SHUTDOWN(mp)) return XFS_ERROR(EIO); |
dd9f438e3 [XFS] Implement t... |
4748 |
rt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); |
1da177e4c Linux-2.6.12-rc2 |
4749 4750 4751 4752 4753 4754 4755 |
ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(ifp->if_ext_max == XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t)); if ((wr = (flags & XFS_BMAPI_WRITE)) != 0) XFS_STATS_INC(xs_blk_mapw); else XFS_STATS_INC(xs_blk_mapr); |
1da177e4c Linux-2.6.12-rc2 |
4756 |
/* |
39269e29d [XFS] Reduce xfs_... |
4757 |
* IGSTATE flag is used to combine extents which |
1da177e4c Linux-2.6.12-rc2 |
4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 |
* differ only due to the state of the extents. * This technique is used from xfs_getbmap() * when the caller does not wish to see the * separation (which is the default). * * This technique is also used when writing a * buffer which has been partially written, * (usually by being flushed during a chunkread), * to ensure one write takes place. This also * prevents a change in the xfs inode extents at * this time, intentionally. This change occurs * on completion of the write operation, in * xfs_strat_comp(), where the xfs_bmapi() call * is transactioned, and the extents combined. */ |
39269e29d [XFS] Reduce xfs_... |
4773 4774 4775 |
if ((flags & XFS_BMAPI_IGSTATE) && wr) /* if writing unwritten space */ wr = 0; /* no allocations are allowed */ ASSERT(wr || !(flags & XFS_BMAPI_DELAY)); |
1da177e4c Linux-2.6.12-rc2 |
4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 |
logflags = 0; nallocs = 0; cur = NULL; if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { ASSERT(wr && tp); if ((error = xfs_bmap_local_to_extents(tp, ip, firstblock, total, &logflags, whichfork))) goto error0; } if (wr && *firstblock == NULLFSBLOCK) { if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE) |
16259e7d9 [XFS] Endianess a... |
4787 |
minleft = be16_to_cpu(ifp->if_broot->bb_level) + 1; |
1da177e4c Linux-2.6.12-rc2 |
4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 |
else minleft = 1; } else minleft = 0; if (!(ifp->if_flags & XFS_IFEXTENTS) && (error = xfs_iread_extents(tp, ip, whichfork))) goto error0; ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got, &prev); nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); n = 0; end = bno + len; obno = bno; bma.ip = NULL; |
3e57ecf64 [XFS] Add paramet... |
4802 4803 4804 4805 |
if (delta) { delta->xed_startoff = NULLFILEOFF; delta->xed_blockcount = 0; } |
1da177e4c Linux-2.6.12-rc2 |
4806 4807 4808 4809 4810 4811 4812 4813 |
while (bno < end && n < *nmap) { /* * Reading past eof, act as though there's a hole * up to end. */ if (eof && !wr) got.br_startoff = end; inhole = eof || got.br_startoff > bno; |
39269e29d [XFS] Reduce xfs_... |
4814 |
wasdelay = wr && !inhole && !(flags & XFS_BMAPI_DELAY) && |
1da177e4c Linux-2.6.12-rc2 |
4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 |
ISNULLSTARTBLOCK(got.br_startblock); /* * First, deal with the hole before the allocated space * that we found, if any. */ if (wr && (inhole || wasdelay)) { /* * For the wasdelay case, we could also just * allocate the stuff asked for in this bmap call * but that wouldn't be as good. */ |
39269e29d [XFS] Reduce xfs_... |
4826 |
if (wasdelay && !(flags & XFS_BMAPI_EXACT)) { |
1da177e4c Linux-2.6.12-rc2 |
4827 4828 4829 |
alen = (xfs_extlen_t)got.br_blockcount; aoff = got.br_startoff; if (lastx != NULLEXTNUM && lastx) { |
4eea22f01 [XFS] 929045 5673... |
4830 |
ep = xfs_iext_get_ext(ifp, lastx - 1); |
1da177e4c Linux-2.6.12-rc2 |
4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 |
xfs_bmbt_get_all(ep, &prev); } } else if (wasdelay) { alen = (xfs_extlen_t) XFS_FILBLKS_MIN(len, (got.br_startoff + got.br_blockcount) - bno); aoff = bno; } else { alen = (xfs_extlen_t) XFS_FILBLKS_MIN(len, MAXEXTLEN); if (!eof) alen = (xfs_extlen_t) XFS_FILBLKS_MIN(alen, got.br_startoff - bno); aoff = bno; } |
39269e29d [XFS] Reduce xfs_... |
4848 4849 |
minlen = (flags & XFS_BMAPI_CONTIG) ? alen : 1; if (flags & XFS_BMAPI_DELAY) { |
dd9f438e3 [XFS] Implement t... |
4850 |
xfs_extlen_t extsz; |
06d10dd9c [XFS] Merge fixes... |
4851 4852 |
/* Figure out the extent size, adjust alen */ |
957d0ebed [XFS] Cleanup ino... |
4853 |
extsz = xfs_get_extsz_hint(ip); |
dd9f438e3 [XFS] Implement t... |
4854 4855 4856 |
if (extsz) { error = xfs_bmap_extsize_align(mp, &got, &prev, extsz, |
39269e29d [XFS] Reduce xfs_... |
4857 4858 4859 |
rt, eof, flags&XFS_BMAPI_DELAY, flags&XFS_BMAPI_CONVERT, |
dd9f438e3 [XFS] Implement t... |
4860 4861 |
&aoff, &alen); ASSERT(!error); |
06d10dd9c [XFS] Merge fixes... |
4862 |
} |
dd9f438e3 [XFS] Implement t... |
4863 4864 |
if (rt) extsz = alen / mp->m_sb.sb_rextsize; |
1da177e4c Linux-2.6.12-rc2 |
4865 4866 4867 |
/* * Make a transaction-less quota reservation for * delayed allocation blocks. This number gets |
9a2a7de26 [XFS] Make projec... |
4868 4869 |
* adjusted later. We return if we haven't * allocated blocks already inside this loop. |
1da177e4c Linux-2.6.12-rc2 |
4870 |
*/ |
9a2a7de26 [XFS] Make projec... |
4871 |
if ((error = XFS_TRANS_RESERVE_QUOTA_NBLKS( |
06d10dd9c [XFS] Merge fixes... |
4872 4873 |
mp, NULL, ip, (long)alen, 0, rt ? XFS_QMOPT_RES_RTBLKS : |
9a2a7de26 [XFS] Make projec... |
4874 |
XFS_QMOPT_RES_REGBLKS))) { |
1da177e4c Linux-2.6.12-rc2 |
4875 4876 4877 |
if (n == 0) { *nmap = 0; ASSERT(cur == NULL); |
9a2a7de26 [XFS] Make projec... |
4878 |
return error; |
1da177e4c Linux-2.6.12-rc2 |
4879 4880 4881 4882 4883 4884 4885 4886 |
} break; } /* * Split changing sb for alen and indlen since * they could be coming from different places. */ |
06d10dd9c [XFS] Merge fixes... |
4887 4888 4889 |
indlen = (xfs_extlen_t) xfs_bmap_worst_indlen(ip, alen); ASSERT(indlen > 0); |
1da177e4c Linux-2.6.12-rc2 |
4890 |
|
dd9f438e3 [XFS] Implement t... |
4891 |
if (rt) { |
06d10dd9c [XFS] Merge fixes... |
4892 4893 |
error = xfs_mod_incore_sb(mp, XFS_SBS_FREXTENTS, |
20f4ebf2b [XFS] Make growfs... |
4894 |
-((int64_t)extsz), (flags & |
39269e29d [XFS] Reduce xfs_... |
4895 |
XFS_BMAPI_RSVBLOCKS)); |
dd9f438e3 [XFS] Implement t... |
4896 |
} else { |
06d10dd9c [XFS] Merge fixes... |
4897 4898 |
error = xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, |
20f4ebf2b [XFS] Make growfs... |
4899 |
-((int64_t)alen), (flags & |
39269e29d [XFS] Reduce xfs_... |
4900 |
XFS_BMAPI_RSVBLOCKS)); |
dd9f438e3 [XFS] Implement t... |
4901 |
} |
3bdbfb104 [XFS] Prevent the... |
4902 |
if (!error) { |
06d10dd9c [XFS] Merge fixes... |
4903 4904 |
error = xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, |
20f4ebf2b [XFS] Make growfs... |
4905 |
-((int64_t)indlen), (flags & |
39269e29d [XFS] Reduce xfs_... |
4906 |
XFS_BMAPI_RSVBLOCKS)); |
3ddb8fa98 [XFS] Sort out co... |
4907 4908 |
if (error && rt) xfs_mod_incore_sb(mp, |
3bdbfb104 [XFS] Prevent the... |
4909 |
XFS_SBS_FREXTENTS, |
20f4ebf2b [XFS] Make growfs... |
4910 |
(int64_t)extsz, (flags & |
39269e29d [XFS] Reduce xfs_... |
4911 |
XFS_BMAPI_RSVBLOCKS)); |
3ddb8fa98 [XFS] Sort out co... |
4912 4913 |
else if (error) xfs_mod_incore_sb(mp, |
3bdbfb104 [XFS] Prevent the... |
4914 |
XFS_SBS_FDBLOCKS, |
20f4ebf2b [XFS] Make growfs... |
4915 |
(int64_t)alen, (flags & |
39269e29d [XFS] Reduce xfs_... |
4916 |
XFS_BMAPI_RSVBLOCKS)); |
3bdbfb104 [XFS] Prevent the... |
4917 |
} |
06d10dd9c [XFS] Merge fixes... |
4918 4919 |
if (error) { |
3ddb8fa98 [XFS] Sort out co... |
4920 |
if (XFS_IS_QUOTA_ON(mp)) |
06d10dd9c [XFS] Merge fixes... |
4921 |
/* unreserve the blocks now */ |
dd9f438e3 [XFS] Implement t... |
4922 |
(void) |
06d10dd9c [XFS] Merge fixes... |
4923 4924 4925 4926 4927 |
XFS_TRANS_UNRESERVE_QUOTA_NBLKS( mp, NULL, ip, (long)alen, 0, rt ? XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); |
1da177e4c Linux-2.6.12-rc2 |
4928 4929 |
break; } |
06d10dd9c [XFS] Merge fixes... |
4930 |
|
1da177e4c Linux-2.6.12-rc2 |
4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 |
ip->i_delayed_blks += alen; abno = NULLSTARTBLOCK(indlen); } else { /* * If first time, allocate and fill in * once-only bma fields. */ if (bma.ip == NULL) { bma.tp = tp; bma.ip = ip; bma.prevp = &prev; bma.gotp = &got; bma.total = total; bma.userdata = 0; } /* Indicate if this is the first user data * in the file, or just any user data. */ |
39269e29d [XFS] Reduce xfs_... |
4949 |
if (!(flags & XFS_BMAPI_METADATA)) { |
1da177e4c Linux-2.6.12-rc2 |
4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 |
bma.userdata = (aoff == 0) ? XFS_ALLOC_INITIAL_USER_DATA : XFS_ALLOC_USERDATA; } /* * Fill in changeable bma fields. */ bma.eof = eof; bma.firstblock = *firstblock; bma.alen = alen; bma.off = aoff; |
7288026b8 [XFS] Fix char si... |
4961 |
bma.conv = !!(flags & XFS_BMAPI_CONVERT); |
1da177e4c Linux-2.6.12-rc2 |
4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 |
bma.wasdel = wasdelay; bma.minlen = minlen; bma.low = flist->xbf_low; bma.minleft = minleft; /* * Only want to do the alignment at the * eof if it is userdata and allocation length * is larger than a stripe unit. */ if (mp->m_dalign && alen >= mp->m_dalign && |
39269e29d [XFS] Reduce xfs_... |
4972 4973 |
(!(flags & XFS_BMAPI_METADATA)) && (whichfork == XFS_DATA_FORK)) { |
1da177e4c Linux-2.6.12-rc2 |
4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 |
if ((error = xfs_bmap_isaeof(ip, aoff, whichfork, &bma.aeof))) goto error0; } else bma.aeof = 0; /* * Call allocator. */ if ((error = xfs_bmap_alloc(&bma))) goto error0; /* * Copy out result fields. */ abno = bma.rval; if ((flist->xbf_low = bma.low)) minleft = 0; alen = bma.alen; aoff = bma.off; ASSERT(*firstblock == NULLFSBLOCK || XFS_FSB_TO_AGNO(mp, *firstblock) == XFS_FSB_TO_AGNO(mp, bma.firstblock) || (flist->xbf_low && XFS_FSB_TO_AGNO(mp, *firstblock) < XFS_FSB_TO_AGNO(mp, bma.firstblock))); *firstblock = bma.firstblock; if (cur) cur->bc_private.b.firstblock = *firstblock; if (abno == NULLFSBLOCK) break; if ((ifp->if_flags & XFS_IFBROOT) && !cur) { cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip, whichfork); cur->bc_private.b.firstblock = *firstblock; cur->bc_private.b.flist = flist; } /* * Bump the number of extents we've allocated * in this call. */ nallocs++; } if (cur) cur->bc_private.b.flags = wasdelay ? XFS_BTCUR_BPRV_WASDEL : 0; got.br_startoff = aoff; got.br_startblock = abno; got.br_blockcount = alen; got.br_state = XFS_EXT_NORM; /* assume normal */ /* * Determine state of extent, and the filesystem. * A wasdelay extent has been initialized, so * shouldn't be flagged as unwritten. */ |
621187099 [XFS] remove shou... |
5030 |
if (wr && xfs_sb_version_hasextflgbit(&mp->m_sb)) { |
1da177e4c Linux-2.6.12-rc2 |
5031 5032 5033 5034 |
if (!wasdelay && (flags & XFS_BMAPI_PREALLOC)) got.br_state = XFS_EXT_UNWRITTEN; } error = xfs_bmap_add_extent(ip, lastx, &cur, &got, |
3e57ecf64 [XFS] Add paramet... |
5035 5036 |
firstblock, flist, &tmp_logflags, delta, whichfork, (flags & XFS_BMAPI_RSVBLOCKS)); |
1da177e4c Linux-2.6.12-rc2 |
5037 5038 5039 5040 |
logflags |= tmp_logflags; if (error) goto error0; lastx = ifp->if_lastex; |
4eea22f01 [XFS] 929045 5673... |
5041 |
ep = xfs_iext_get_ext(ifp, lastx); |
1da177e4c Linux-2.6.12-rc2 |
5042 5043 5044 5045 5046 5047 |
nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); xfs_bmbt_get_all(ep, &got); ASSERT(got.br_startoff <= aoff); ASSERT(got.br_startoff + got.br_blockcount >= aoff + alen); #ifdef DEBUG |
39269e29d [XFS] Reduce xfs_... |
5048 |
if (flags & XFS_BMAPI_DELAY) { |
1da177e4c Linux-2.6.12-rc2 |
5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 |
ASSERT(ISNULLSTARTBLOCK(got.br_startblock)); ASSERT(STARTBLOCKVAL(got.br_startblock) > 0); } ASSERT(got.br_state == XFS_EXT_NORM || got.br_state == XFS_EXT_UNWRITTEN); #endif /* * Fall down into the found allocated space case. */ } else if (inhole) { /* * Reading in a hole. */ mval->br_startoff = bno; mval->br_startblock = HOLESTARTBLOCK; mval->br_blockcount = XFS_FILBLKS_MIN(len, got.br_startoff - bno); mval->br_state = XFS_EXT_NORM; bno += mval->br_blockcount; len -= mval->br_blockcount; mval++; n++; continue; } /* * Then deal with the allocated space we found. */ ASSERT(ep != NULL); |
39269e29d [XFS] Reduce xfs_... |
5077 5078 |
if (!(flags & XFS_BMAPI_ENTIRE) && (got.br_startoff + got.br_blockcount > obno)) { |
1da177e4c Linux-2.6.12-rc2 |
5079 5080 5081 5082 5083 5084 |
if (obno > bno) bno = obno; ASSERT((bno >= obno) || (n == 0)); ASSERT(bno < end); mval->br_startoff = bno; if (ISNULLSTARTBLOCK(got.br_startblock)) { |
39269e29d [XFS] Reduce xfs_... |
5085 |
ASSERT(!wr || (flags & XFS_BMAPI_DELAY)); |
1da177e4c Linux-2.6.12-rc2 |
5086 5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104 5105 5106 |
mval->br_startblock = DELAYSTARTBLOCK; } else mval->br_startblock = got.br_startblock + (bno - got.br_startoff); /* * Return the minimum of what we got and what we * asked for for the length. We can use the len * variable here because it is modified below * and we could have been there before coming * here if the first part of the allocation * didn't overlap what was asked for. */ mval->br_blockcount = XFS_FILBLKS_MIN(end - bno, got.br_blockcount - (bno - got.br_startoff)); mval->br_state = got.br_state; ASSERT(mval->br_blockcount <= len); } else { *mval = got; if (ISNULLSTARTBLOCK(mval->br_startblock)) { |
39269e29d [XFS] Reduce xfs_... |
5107 |
ASSERT(!wr || (flags & XFS_BMAPI_DELAY)); |
1da177e4c Linux-2.6.12-rc2 |
5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 |
mval->br_startblock = DELAYSTARTBLOCK; } } /* * Check if writing previously allocated but * unwritten extents. */ if (wr && mval->br_state == XFS_EXT_UNWRITTEN && ((flags & (XFS_BMAPI_PREALLOC|XFS_BMAPI_DELAY)) == 0)) { /* * Modify (by adding) the state flag, if writing. */ ASSERT(mval->br_blockcount <= len); if ((ifp->if_flags & XFS_IFBROOT) && !cur) { cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip, whichfork); cur->bc_private.b.firstblock = *firstblock; cur->bc_private.b.flist = flist; } mval->br_state = XFS_EXT_NORM; error = xfs_bmap_add_extent(ip, lastx, &cur, mval, |
3e57ecf64 [XFS] Add paramet... |
5132 5133 |
firstblock, flist, &tmp_logflags, delta, whichfork, (flags & XFS_BMAPI_RSVBLOCKS)); |
1da177e4c Linux-2.6.12-rc2 |
5134 5135 5136 5137 |
logflags |= tmp_logflags; if (error) goto error0; lastx = ifp->if_lastex; |
4eea22f01 [XFS] 929045 5673... |
5138 |
ep = xfs_iext_get_ext(ifp, lastx); |
1da177e4c Linux-2.6.12-rc2 |
5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 |
nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); xfs_bmbt_get_all(ep, &got); /* * We may have combined previously unwritten * space with written space, so generate * another request. */ if (mval->br_blockcount < len) continue; } |
39269e29d [XFS] Reduce xfs_... |
5149 |
ASSERT((flags & XFS_BMAPI_ENTIRE) || |
1da177e4c Linux-2.6.12-rc2 |
5150 |
((mval->br_startoff + mval->br_blockcount) <= end)); |
39269e29d [XFS] Reduce xfs_... |
5151 5152 |
ASSERT((flags & XFS_BMAPI_ENTIRE) || (mval->br_blockcount <= len) || |
1da177e4c Linux-2.6.12-rc2 |
5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 |
(mval->br_startoff < obno)); bno = mval->br_startoff + mval->br_blockcount; len = end - bno; if (n > 0 && mval->br_startoff == mval[-1].br_startoff) { ASSERT(mval->br_startblock == mval[-1].br_startblock); ASSERT(mval->br_blockcount > mval[-1].br_blockcount); ASSERT(mval->br_state == mval[-1].br_state); mval[-1].br_blockcount = mval->br_blockcount; mval[-1].br_state = mval->br_state; } else if (n > 0 && mval->br_startblock != DELAYSTARTBLOCK && mval[-1].br_startblock != DELAYSTARTBLOCK && mval[-1].br_startblock != HOLESTARTBLOCK && mval->br_startblock == mval[-1].br_startblock + mval[-1].br_blockcount && |
39269e29d [XFS] Reduce xfs_... |
5167 5168 |
((flags & XFS_BMAPI_IGSTATE) || mval[-1].br_state == mval->br_state)) { |
1da177e4c Linux-2.6.12-rc2 |
5169 5170 5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 |
ASSERT(mval->br_startoff == mval[-1].br_startoff + mval[-1].br_blockcount); mval[-1].br_blockcount += mval->br_blockcount; } else if (n > 0 && mval->br_startblock == DELAYSTARTBLOCK && mval[-1].br_startblock == DELAYSTARTBLOCK && mval->br_startoff == mval[-1].br_startoff + mval[-1].br_blockcount) { mval[-1].br_blockcount += mval->br_blockcount; mval[-1].br_state = mval->br_state; } else if (!((n == 0) && ((mval->br_startoff + mval->br_blockcount) <= obno))) { mval++; n++; } /* * If we're done, stop now. Stop when we've allocated * XFS_BMAP_MAX_NMAP extents no matter what. Otherwise * the transaction may get too big. */ if (bno >= end || n >= *nmap || nallocs >= *nmap) break; /* * Else go on to the next record. */ |
4eea22f01 [XFS] 929045 5673... |
5195 |
ep = xfs_iext_get_ext(ifp, ++lastx); |
4e5ae8386 [XFS] xfs_bmapi f... |
5196 5197 |
prev = got; if (lastx >= nextents) |
1da177e4c Linux-2.6.12-rc2 |
5198 |
eof = 1; |
4e5ae8386 [XFS] xfs_bmapi f... |
5199 |
else |
1da177e4c Linux-2.6.12-rc2 |
5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 |
xfs_bmbt_get_all(ep, &got); } ifp->if_lastex = lastx; *nmap = n; /* * Transform from btree to extents, give it cur. */ if (tp && XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE && XFS_IFORK_NEXTENTS(ip, whichfork) <= ifp->if_ext_max) { ASSERT(wr && cur); error = xfs_bmap_btree_to_extents(tp, ip, cur, &tmp_logflags, whichfork); logflags |= tmp_logflags; if (error) goto error0; } ASSERT(ifp->if_ext_max == XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t)); ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE || XFS_IFORK_NEXTENTS(ip, whichfork) > ifp->if_ext_max); error = 0; |
3e57ecf64 [XFS] Add paramet... |
5221 5222 5223 5224 5225 5226 5227 5228 |
if (delta && delta->xed_startoff != NULLFILEOFF) { /* A change was actually made. * Note that delta->xed_blockount is an offset at this * point and needs to be converted to a block count. */ ASSERT(delta->xed_blockcount > delta->xed_startoff); delta->xed_blockcount -= delta->xed_startoff; } |
1da177e4c Linux-2.6.12-rc2 |
5229 5230 5231 |
error0: /* * Log everything. Do this after conversion, there's no point in |
4eea22f01 [XFS] 929045 5673... |
5232 |
* logging the extent records if we've converted to btree format. |
1da177e4c Linux-2.6.12-rc2 |
5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 |
*/ if ((logflags & XFS_ILOG_FEXT(whichfork)) && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) logflags &= ~XFS_ILOG_FEXT(whichfork); else if ((logflags & XFS_ILOG_FBROOT(whichfork)) && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) logflags &= ~XFS_ILOG_FBROOT(whichfork); /* * Log whatever the flags say, even if error. Otherwise we might miss * detecting a case where the data is changed, there's an error, * and it's not logged so we don't shutdown when we should. */ if (logflags) { ASSERT(tp && wr); xfs_trans_log_inode(tp, ip, logflags); } if (cur) { if (!error) { ASSERT(*firstblock == NULLFSBLOCK || XFS_FSB_TO_AGNO(mp, *firstblock) == XFS_FSB_TO_AGNO(mp, cur->bc_private.b.firstblock) || (flist->xbf_low && XFS_FSB_TO_AGNO(mp, *firstblock) < XFS_FSB_TO_AGNO(mp, cur->bc_private.b.firstblock))); *firstblock = cur->bc_private.b.firstblock; } xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); } if (!error) xfs_bmap_validate_ret(orig_bno, orig_len, orig_flags, orig_mval, orig_nmap, *nmap); return error; } /* * Map file blocks to filesystem blocks, simple version. * One block (extent) only, read-only. * For flags, only the XFS_BMAPI_ATTRFORK flag is examined. * For the other flag values, the effect is as if XFS_BMAPI_METADATA * was set and all the others were clear. */ int /* error */ xfs_bmapi_single( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode */ int whichfork, /* data or attr fork */ xfs_fsblock_t *fsb, /* output: mapped block */ xfs_fileoff_t bno) /* starting file offs. mapped */ { |
4eea22f01 [XFS] 929045 5673... |
5285 |
int eof; /* we've hit the end of extents */ |
1da177e4c Linux-2.6.12-rc2 |
5286 |
int error; /* error return */ |
4eea22f01 [XFS] 929045 5673... |
5287 |
xfs_bmbt_irec_t got; /* current file extent record */ |
1da177e4c Linux-2.6.12-rc2 |
5288 5289 |
xfs_ifork_t *ifp; /* inode fork pointer */ xfs_extnum_t lastx; /* last useful extent number */ |
4eea22f01 [XFS] 929045 5673... |
5290 |
xfs_bmbt_irec_t prev; /* previous file extent record */ |
1da177e4c Linux-2.6.12-rc2 |
5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 |
ifp = XFS_IFORK_PTR(ip, whichfork); if (unlikely( XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS)) { XFS_ERROR_REPORT("xfs_bmapi_single", XFS_ERRLEVEL_LOW, ip->i_mount); return XFS_ERROR(EFSCORRUPTED); } if (XFS_FORCED_SHUTDOWN(ip->i_mount)) return XFS_ERROR(EIO); XFS_STATS_INC(xs_blk_mapr); if (!(ifp->if_flags & XFS_IFEXTENTS) && (error = xfs_iread_extents(tp, ip, whichfork))) return error; (void)xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got, &prev); /* * Reading past eof, act as though there's a hole * up to end. */ if (eof || got.br_startoff > bno) { *fsb = NULLFSBLOCK; return 0; } ASSERT(!ISNULLSTARTBLOCK(got.br_startblock)); ASSERT(bno < got.br_startoff + got.br_blockcount); *fsb = got.br_startblock + (bno - got.br_startoff); ifp->if_lastex = lastx; return 0; } /* * Unmap (remove) blocks from a file. * If nexts is nonzero then the number of extents to remove is limited to * that value. If not all extents in the block range can be removed then * *done is set. */ int /* error */ xfs_bunmapi( xfs_trans_t *tp, /* transaction pointer */ struct xfs_inode *ip, /* incore inode */ xfs_fileoff_t bno, /* starting offset to unmap */ xfs_filblks_t len, /* length to unmap in file */ int flags, /* misc flags */ xfs_extnum_t nexts, /* number of extents max */ xfs_fsblock_t *firstblock, /* first allocated block controls a.g. for allocs */ xfs_bmap_free_t *flist, /* i/o: list extents to free */ |
3e57ecf64 [XFS] Add paramet... |
5340 5341 |
xfs_extdelta_t *delta, /* o: change made to incore extents */ |
1da177e4c Linux-2.6.12-rc2 |
5342 5343 5344 5345 5346 |
int *done) /* set if not done yet */ { xfs_btree_cur_t *cur; /* bmap btree cursor */ xfs_bmbt_irec_t del; /* extent being deleted */ int eof; /* is deleting at eof */ |
a6f64d4ae [XFS] split ondis... |
5347 |
xfs_bmbt_rec_host_t *ep; /* extent record pointer */ |
1da177e4c Linux-2.6.12-rc2 |
5348 5349 |
int error; /* error return value */ xfs_extnum_t extno; /* extent number in list */ |
4eea22f01 [XFS] 929045 5673... |
5350 |
xfs_bmbt_irec_t got; /* current extent record */ |
1da177e4c Linux-2.6.12-rc2 |
5351 5352 5353 5354 5355 5356 |
xfs_ifork_t *ifp; /* inode fork pointer */ int isrt; /* freeing in rt area */ xfs_extnum_t lastx; /* last extent index used */ int logflags; /* transaction logging flags */ xfs_extlen_t mod; /* rt extent offset */ xfs_mount_t *mp; /* mount structure */ |
4eea22f01 [XFS] 929045 5673... |
5357 5358 |
xfs_extnum_t nextents; /* number of file extents */ xfs_bmbt_irec_t prev; /* previous extent record */ |
1da177e4c Linux-2.6.12-rc2 |
5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 |
xfs_fileoff_t start; /* first file offset deleted */ int tmp_logflags; /* partial logging flags */ int wasdel; /* was a delayed alloc extent */ int whichfork; /* data or attribute fork */ int rsvd; /* OK to allocate reserved blocks */ xfs_fsblock_t sum; xfs_bunmap_trace(ip, bno, len, flags, (inst_t *)__return_address); whichfork = (flags & XFS_BMAPI_ATTRFORK) ? XFS_ATTR_FORK : XFS_DATA_FORK; ifp = XFS_IFORK_PTR(ip, whichfork); if (unlikely( XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { XFS_ERROR_REPORT("xfs_bunmapi", XFS_ERRLEVEL_LOW, ip->i_mount); return XFS_ERROR(EFSCORRUPTED); } mp = ip->i_mount; if (XFS_FORCED_SHUTDOWN(mp)) return XFS_ERROR(EIO); rsvd = (flags & XFS_BMAPI_RSVBLOCKS) != 0; ASSERT(len > 0); ASSERT(nexts >= 0); ASSERT(ifp->if_ext_max == XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t)); if (!(ifp->if_flags & XFS_IFEXTENTS) && (error = xfs_iread_extents(tp, ip, whichfork))) return error; nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); if (nextents == 0) { *done = 1; return 0; } XFS_STATS_INC(xs_blk_unmap); |
dd9f438e3 [XFS] Implement t... |
5394 |
isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); |
1da177e4c Linux-2.6.12-rc2 |
5395 5396 5397 5398 |
start = bno; bno = start + len - 1; ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got, &prev); |
3e57ecf64 [XFS] Add paramet... |
5399 5400 5401 5402 |
if (delta) { delta->xed_startoff = NULLFILEOFF; delta->xed_blockcount = 0; } |
1da177e4c Linux-2.6.12-rc2 |
5403 5404 5405 5406 5407 |
/* * Check to see if the given block number is past the end of the * file, back up to the last block if so... */ if (eof) { |
4eea22f01 [XFS] 929045 5673... |
5408 |
ep = xfs_iext_get_ext(ifp, --lastx); |
1da177e4c Linux-2.6.12-rc2 |
5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 |
xfs_bmbt_get_all(ep, &got); bno = got.br_startoff + got.br_blockcount - 1; } logflags = 0; if (ifp->if_flags & XFS_IFBROOT) { ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE); cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip, whichfork); cur->bc_private.b.firstblock = *firstblock; cur->bc_private.b.flist = flist; cur->bc_private.b.flags = 0; } else cur = NULL; extno = 0; while (bno != (xfs_fileoff_t)-1 && bno >= start && lastx >= 0 && (nexts == 0 || extno < nexts)) { /* * Is the found extent after a hole in which bno lives? * Just back up to the previous extent, if so. */ if (got.br_startoff > bno) { if (--lastx < 0) break; |
4eea22f01 [XFS] 929045 5673... |
5432 |
ep = xfs_iext_get_ext(ifp, lastx); |
1da177e4c Linux-2.6.12-rc2 |
5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 |
xfs_bmbt_get_all(ep, &got); } /* * Is the last block of this extent before the range * we're supposed to delete? If so, we're done. */ bno = XFS_FILEOFF_MIN(bno, got.br_startoff + got.br_blockcount - 1); if (bno < start) break; /* * Then deal with the (possibly delayed) allocated space * we found. */ ASSERT(ep != NULL); del = got; wasdel = ISNULLSTARTBLOCK(del.br_startblock); if (got.br_startoff < start) { del.br_startoff = start; del.br_blockcount -= start - got.br_startoff; if (!wasdel) del.br_startblock += start - got.br_startoff; } if (del.br_startoff + del.br_blockcount > bno + 1) del.br_blockcount = bno + 1 - del.br_startoff; sum = del.br_startblock + del.br_blockcount; if (isrt && (mod = do_mod(sum, mp->m_sb.sb_rextsize))) { /* * Realtime extent not lined up at the end. * The extent could have been split into written * and unwritten pieces, or we could just be * unmapping part of it. But we can't really * get rid of part of a realtime extent. */ if (del.br_state == XFS_EXT_UNWRITTEN || |
621187099 [XFS] remove shou... |
5469 |
!xfs_sb_version_hasextflgbit(&mp->m_sb)) { |
1da177e4c Linux-2.6.12-rc2 |
5470 5471 5472 5473 5474 5475 5476 5477 5478 |
/* * This piece is unwritten, or we're not * using unwritten extents. Skip over it. */ ASSERT(bno >= mod); bno -= mod > del.br_blockcount ? del.br_blockcount : mod; if (bno < got.br_startoff) { if (--lastx >= 0) |
4eea22f01 [XFS] 929045 5673... |
5479 5480 |
xfs_bmbt_get_all(xfs_iext_get_ext( ifp, lastx), &got); |
1da177e4c Linux-2.6.12-rc2 |
5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500 |
} continue; } /* * It's written, turn it unwritten. * This is better than zeroing it. */ ASSERT(del.br_state == XFS_EXT_NORM); ASSERT(xfs_trans_get_block_res(tp) > 0); /* * If this spans a realtime extent boundary, * chop it back to the start of the one we end at. */ if (del.br_blockcount > mod) { del.br_startoff += del.br_blockcount - mod; del.br_startblock += del.br_blockcount - mod; del.br_blockcount = mod; } del.br_state = XFS_EXT_UNWRITTEN; error = xfs_bmap_add_extent(ip, lastx, &cur, &del, |
3e57ecf64 [XFS] Add paramet... |
5501 5502 |
firstblock, flist, &logflags, delta, XFS_DATA_FORK, 0); |
1da177e4c Linux-2.6.12-rc2 |
5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 |
if (error) goto error0; goto nodelete; } if (isrt && (mod = do_mod(del.br_startblock, mp->m_sb.sb_rextsize))) { /* * Realtime extent is lined up at the end but not * at the front. We'll get rid of full extents if * we can. */ mod = mp->m_sb.sb_rextsize - mod; if (del.br_blockcount > mod) { del.br_blockcount -= mod; del.br_startoff += mod; del.br_startblock += mod; } else if ((del.br_startoff == start && (del.br_state == XFS_EXT_UNWRITTEN || xfs_trans_get_block_res(tp) == 0)) || |
621187099 [XFS] remove shou... |
5521 |
!xfs_sb_version_hasextflgbit(&mp->m_sb)) { |
1da177e4c Linux-2.6.12-rc2 |
5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 |
/* * Can't make it unwritten. There isn't * a full extent here so just skip it. */ ASSERT(bno >= del.br_blockcount); bno -= del.br_blockcount; if (bno < got.br_startoff) { if (--lastx >= 0) xfs_bmbt_get_all(--ep, &got); } continue; } else if (del.br_state == XFS_EXT_UNWRITTEN) { /* * This one is already unwritten. * It must have a written left neighbor. * Unwrite the killed part of that one and * try again. */ ASSERT(lastx > 0); |
4eea22f01 [XFS] 929045 5673... |
5541 5542 |
xfs_bmbt_get_all(xfs_iext_get_ext(ifp, lastx - 1), &prev); |
1da177e4c Linux-2.6.12-rc2 |
5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 |
ASSERT(prev.br_state == XFS_EXT_NORM); ASSERT(!ISNULLSTARTBLOCK(prev.br_startblock)); ASSERT(del.br_startblock == prev.br_startblock + prev.br_blockcount); if (prev.br_startoff < start) { mod = start - prev.br_startoff; prev.br_blockcount -= mod; prev.br_startblock += mod; prev.br_startoff = start; } prev.br_state = XFS_EXT_UNWRITTEN; error = xfs_bmap_add_extent(ip, lastx - 1, &cur, &prev, firstblock, flist, &logflags, |
3e57ecf64 [XFS] Add paramet... |
5556 |
delta, XFS_DATA_FORK, 0); |
1da177e4c Linux-2.6.12-rc2 |
5557 5558 5559 5560 5561 5562 5563 5564 |
if (error) goto error0; goto nodelete; } else { ASSERT(del.br_state == XFS_EXT_NORM); del.br_state = XFS_EXT_UNWRITTEN; error = xfs_bmap_add_extent(ip, lastx, &cur, &del, firstblock, flist, &logflags, |
3e57ecf64 [XFS] Add paramet... |
5565 |
delta, XFS_DATA_FORK, 0); |
1da177e4c Linux-2.6.12-rc2 |
5566 5567 5568 5569 5570 5571 5572 |
if (error) goto error0; goto nodelete; } } if (wasdel) { ASSERT(STARTBLOCKVAL(del.br_startblock) > 0); |
dd9f438e3 [XFS] Implement t... |
5573 |
/* Update realtime/data freespace, unreserve quota */ |
06d10dd9c [XFS] Merge fixes... |
5574 5575 5576 5577 5578 5579 |
if (isrt) { xfs_filblks_t rtexts; rtexts = XFS_FSB_TO_B(mp, del.br_blockcount); do_div(rtexts, mp->m_sb.sb_rextsize); xfs_mod_incore_sb(mp, XFS_SBS_FREXTENTS, |
20f4ebf2b [XFS] Make growfs... |
5580 |
(int64_t)rtexts, rsvd); |
dd9f438e3 [XFS] Implement t... |
5581 5582 |
(void)XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, NULL, ip, -((long)del.br_blockcount), 0, |
06d10dd9c [XFS] Merge fixes... |
5583 5584 5585 |
XFS_QMOPT_RES_RTBLKS); } else { xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, |
20f4ebf2b [XFS] Make growfs... |
5586 |
(int64_t)del.br_blockcount, rsvd); |
dd9f438e3 [XFS] Implement t... |
5587 5588 |
(void)XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, NULL, ip, -((long)del.br_blockcount), 0, |
1da177e4c Linux-2.6.12-rc2 |
5589 |
XFS_QMOPT_RES_REGBLKS); |
06d10dd9c [XFS] Merge fixes... |
5590 |
} |
1da177e4c Linux-2.6.12-rc2 |
5591 5592 5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 |
ip->i_delayed_blks -= del.br_blockcount; if (cur) cur->bc_private.b.flags |= XFS_BTCUR_BPRV_WASDEL; } else if (cur) cur->bc_private.b.flags &= ~XFS_BTCUR_BPRV_WASDEL; /* * If it's the case where the directory code is running * with no block reservation, and the deleted block is in * the middle of its extent, and the resulting insert * of an extent would cause transformation to btree format, * then reject it. The calling code will then swap * blocks around instead. * We have to do this now, rather than waiting for the * conversion to btree format, since the transaction * will be dirty. */ if (!wasdel && xfs_trans_get_block_res(tp) == 0 && XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && XFS_IFORK_NEXTENTS(ip, whichfork) >= ifp->if_ext_max && del.br_startoff > got.br_startoff && del.br_startoff + del.br_blockcount < got.br_startoff + got.br_blockcount) { error = XFS_ERROR(ENOSPC); goto error0; } error = xfs_bmap_del_extent(ip, tp, lastx, flist, cur, &del, |
3e57ecf64 [XFS] Add paramet... |
5618 |
&tmp_logflags, delta, whichfork, rsvd); |
1da177e4c Linux-2.6.12-rc2 |
5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 |
logflags |= tmp_logflags; if (error) goto error0; bno = del.br_startoff - 1; nodelete: lastx = ifp->if_lastex; /* * If not done go on to the next (previous) record. * Reset ep in case the extents array was re-alloced. */ |
4eea22f01 [XFS] 929045 5673... |
5629 |
ep = xfs_iext_get_ext(ifp, lastx); |
1da177e4c Linux-2.6.12-rc2 |
5630 5631 5632 |
if (bno != (xfs_fileoff_t)-1 && bno >= start) { if (lastx >= XFS_IFORK_NEXTENTS(ip, whichfork) || xfs_bmbt_get_startoff(ep) > bno) { |
4eea22f01 [XFS] 929045 5673... |
5633 5634 |
if (--lastx >= 0) ep = xfs_iext_get_ext(ifp, lastx); |
1da177e4c Linux-2.6.12-rc2 |
5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662 5663 5664 5665 5666 5667 5668 5669 5670 5671 5672 5673 5674 |
} if (lastx >= 0) xfs_bmbt_get_all(ep, &got); extno++; } } ifp->if_lastex = lastx; *done = bno == (xfs_fileoff_t)-1 || bno < start || lastx < 0; ASSERT(ifp->if_ext_max == XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t)); /* * Convert to a btree if necessary. */ if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && XFS_IFORK_NEXTENTS(ip, whichfork) > ifp->if_ext_max) { ASSERT(cur == NULL); error = xfs_bmap_extents_to_btree(tp, ip, firstblock, flist, &cur, 0, &tmp_logflags, whichfork); logflags |= tmp_logflags; if (error) goto error0; } /* * transform from btree to extents, give it cur */ else if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE && XFS_IFORK_NEXTENTS(ip, whichfork) <= ifp->if_ext_max) { ASSERT(cur != NULL); error = xfs_bmap_btree_to_extents(tp, ip, cur, &tmp_logflags, whichfork); logflags |= tmp_logflags; if (error) goto error0; } /* * transform from extents to local? */ ASSERT(ifp->if_ext_max == XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t)); error = 0; |
3e57ecf64 [XFS] Add paramet... |
5675 5676 5677 5678 5679 5680 5681 5682 |
if (delta && delta->xed_startoff != NULLFILEOFF) { /* A change was actually made. * Note that delta->xed_blockount is an offset at this * point and needs to be converted to a block count. */ ASSERT(delta->xed_blockcount > delta->xed_startoff); delta->xed_blockcount -= delta->xed_startoff; } |
1da177e4c Linux-2.6.12-rc2 |
5683 5684 5685 |
error0: /* * Log everything. Do this after conversion, there's no point in |
4eea22f01 [XFS] 929045 5673... |
5686 |
* logging the extent records if we've converted to btree format. |
1da177e4c Linux-2.6.12-rc2 |
5687 5688 5689 5690 5691 5692 5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710 5711 |
*/ if ((logflags & XFS_ILOG_FEXT(whichfork)) && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) logflags &= ~XFS_ILOG_FEXT(whichfork); else if ((logflags & XFS_ILOG_FBROOT(whichfork)) && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) logflags &= ~XFS_ILOG_FBROOT(whichfork); /* * Log inode even in the error case, if the transaction * is dirty we'll need to shut down the filesystem. */ if (logflags) xfs_trans_log_inode(tp, ip, logflags); if (cur) { if (!error) { *firstblock = cur->bc_private.b.firstblock; cur->bc_private.b.allocated = 0; } xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); } return error; } /* |
3bacbcd88 [XFS] hole not sh... |
5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 |
* returns 1 for success, 0 if we failed to map the extent. */ STATIC int xfs_getbmapx_fix_eof_hole( xfs_inode_t *ip, /* xfs incore inode pointer */ struct getbmap *out, /* output structure */ int prealloced, /* this is a file with * preallocated data space */ __int64_t end, /* last block requested */ xfs_fsblock_t startblock) { __int64_t fixlen; xfs_mount_t *mp; /* file system mount point */ if (startblock == HOLESTARTBLOCK) { mp = ip->i_mount; out->bmv_block = -1; fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, ip->i_size)); fixlen -= out->bmv_offset; if (prealloced && out->bmv_offset + out->bmv_length == end) { /* Came to hole at EOF. Trim it. */ if (fixlen <= 0) return 0; out->bmv_length = fixlen; } } else { out->bmv_block = XFS_FSB_TO_DB(ip, startblock); } return 1; } /* |
1da177e4c Linux-2.6.12-rc2 |
5745 5746 5747 5748 |
* Fcntl interface to xfs_bmapi. */ int /* error code */ xfs_getbmap( |
993386c19 [XFS] decontamina... |
5749 |
xfs_inode_t *ip, |
1da177e4c Linux-2.6.12-rc2 |
5750 5751 5752 5753 5754 5755 5756 5757 |
struct getbmap *bmv, /* user bmap structure */ void __user *ap, /* pointer to user's array */ int interface) /* interface flags */ { __int64_t bmvend; /* last block requested */ int error; /* return value */ __int64_t fixlen; /* length for -1 case */ int i; /* extent number */ |
1da177e4c Linux-2.6.12-rc2 |
5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 |
int lock; /* lock state */ xfs_bmbt_irec_t *map; /* buffer for user's data */ xfs_mount_t *mp; /* file system mount point */ int nex; /* # of user extents can do */ int nexleft; /* # of user extents left */ int subnex; /* # of bmapi's can do */ int nmap; /* number of map entries */ struct getbmap out; /* output structure */ int whichfork; /* data or attr fork */ int prealloced; /* this is a file with * preallocated data space */ int sh_unwritten; /* true, if unwritten */ /* extents listed separately */ int bmapi_flags; /* flags for xfs_bmapi */ __int32_t oflags; /* getbmapx bmv_oflags field */ |
1da177e4c Linux-2.6.12-rc2 |
5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 |
mp = ip->i_mount; whichfork = interface & BMV_IF_ATTRFORK ? XFS_ATTR_FORK : XFS_DATA_FORK; sh_unwritten = (interface & BMV_IF_PREALLOC) != 0; /* If the BMV_IF_NO_DMAPI_READ interface bit specified, do not * generate a DMAPI read event. Otherwise, if the DM_EVENT_READ * bit is set for the file, generate a read event in order * that the DMAPI application may do its thing before we return * the extents. Usually this means restoring user file data to * regions of the file that look like holes. * * The "old behavior" (from XFS_IOC_GETBMAP) is to not specify * BMV_IF_NO_DMAPI_READ so that read events are generated. * If this were not true, callers of ioctl( XFS_IOC_GETBMAP ) * could misinterpret holes in a DMAPI file as true holes, * when in fact they may represent offline user data. */ |
eb9df39da [XFS] remove unes... |
5791 5792 5793 |
if ((interface & BMV_IF_NO_DMAPI_READ) == 0 && DM_EVENT_ENABLED(ip, DM_EVENT_READ) && whichfork == XFS_DATA_FORK) { |
bc4ac74a4 [XFS] cleanup vno... |
5794 |
error = XFS_SEND_DATA(mp, DM_EVENT_READ, ip, 0, 0, 0, NULL); |
1da177e4c Linux-2.6.12-rc2 |
5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 |
if (error) return XFS_ERROR(error); } if (whichfork == XFS_ATTR_FORK) { if (XFS_IFORK_Q(ip)) { if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS && ip->i_d.di_aformat != XFS_DINODE_FMT_BTREE && ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL) return XFS_ERROR(EINVAL); } else if (unlikely( ip->i_d.di_aformat != 0 && ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS)) { XFS_ERROR_REPORT("xfs_getbmap", XFS_ERRLEVEL_LOW, ip->i_mount); return XFS_ERROR(EFSCORRUPTED); } } else if (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS && ip->i_d.di_format != XFS_DINODE_FMT_BTREE && ip->i_d.di_format != XFS_DINODE_FMT_LOCAL) return XFS_ERROR(EINVAL); if (whichfork == XFS_DATA_FORK) { |
957d0ebed [XFS] Cleanup ino... |
5817 |
if (xfs_get_extsz_hint(ip) || |
dd9f438e3 [XFS] Implement t... |
5818 |
ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC|XFS_DIFLAG_APPEND)){ |
1da177e4c Linux-2.6.12-rc2 |
5819 5820 5821 5822 |
prealloced = 1; fixlen = XFS_MAXIOFFSET(mp); } else { prealloced = 0; |
ba87ea699 [XFS] Fix to prev... |
5823 |
fixlen = ip->i_size; |
1da177e4c Linux-2.6.12-rc2 |
5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 |
} } else { prealloced = 0; fixlen = 1LL << 32; } if (bmv->bmv_length == -1) { fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, fixlen)); bmv->bmv_length = MAX( (__int64_t)(fixlen - bmv->bmv_offset), (__int64_t)0); } else if (bmv->bmv_length < 0) return XFS_ERROR(EINVAL); if (bmv->bmv_length == 0) { bmv->bmv_entries = 0; return 0; } nex = bmv->bmv_count - 1; if (nex <= 0) return XFS_ERROR(EINVAL); bmvend = bmv->bmv_offset + bmv->bmv_length; xfs_ilock(ip, XFS_IOLOCK_SHARED); |
ba87ea699 [XFS] Fix to prev... |
5846 5847 |
if (whichfork == XFS_DATA_FORK && (ip->i_delayed_blks || ip->i_size > ip->i_d.di_size)) { |
1da177e4c Linux-2.6.12-rc2 |
5848 |
/* xfs_fsize_t last_byte = xfs_file_last_byte(ip); */ |
739bfb2a7 [XFS] call common... |
5849 5850 |
error = xfs_flush_pages(ip, (xfs_off_t)0, -1, 0, FI_REMAPF); |
e12070a5d [XFS] actually ch... |
5851 5852 5853 5854 |
if (error) { xfs_iunlock(ip, XFS_IOLOCK_SHARED); return error; } |
1da177e4c Linux-2.6.12-rc2 |
5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 |
} ASSERT(whichfork == XFS_ATTR_FORK || ip->i_delayed_blks == 0); lock = xfs_ilock_map_shared(ip); /* * Don't let nex be bigger than the number of extents * we can have assuming alternating holes and real extents. */ if (nex > XFS_IFORK_NEXTENTS(ip, whichfork) * 2 + 1) nex = XFS_IFORK_NEXTENTS(ip, whichfork) * 2 + 1; bmapi_flags = XFS_BMAPI_AFLAG(whichfork) | ((sh_unwritten) ? 0 : XFS_BMAPI_IGSTATE); /* * Allocate enough space to handle "subnex" maps at a time. */ subnex = 16; map = kmem_alloc(subnex * sizeof(*map), KM_SLEEP); bmv->bmv_entries = 0; if (XFS_IFORK_NEXTENTS(ip, whichfork) == 0) { error = 0; goto unlock_and_return; } nexleft = nex; do { nmap = (nexleft > subnex) ? subnex : nexleft; error = xfs_bmapi(NULL, ip, XFS_BB_TO_FSBT(mp, bmv->bmv_offset), XFS_BB_TO_FSB(mp, bmv->bmv_length), |
3e57ecf64 [XFS] Add paramet... |
5890 5891 |
bmapi_flags, NULL, 0, map, &nmap, NULL, NULL); |
1da177e4c Linux-2.6.12-rc2 |
5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 |
if (error) goto unlock_and_return; ASSERT(nmap <= subnex); for (i = 0; i < nmap && nexleft && bmv->bmv_length; i++) { nexleft--; oflags = (map[i].br_state == XFS_EXT_UNWRITTEN) ? BMV_OF_PREALLOC : 0; out.bmv_offset = XFS_FSB_TO_BB(mp, map[i].br_startoff); out.bmv_length = XFS_FSB_TO_BB(mp, map[i].br_blockcount); ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); |
9af0a70c0 [XFS] Fixed a bug... |
5903 |
if (map[i].br_startblock == HOLESTARTBLOCK && |
3bacbcd88 [XFS] hole not sh... |
5904 5905 |
whichfork == XFS_ATTR_FORK) { /* came to the end of attribute fork */ |
1da177e4c Linux-2.6.12-rc2 |
5906 5907 |
goto unlock_and_return; } else { |
3bacbcd88 [XFS] hole not sh... |
5908 5909 5910 5911 5912 |
if (!xfs_getbmapx_fix_eof_hole(ip, &out, prealloced, bmvend, map[i].br_startblock)) { goto unlock_and_return; } |
1da177e4c Linux-2.6.12-rc2 |
5913 5914 5915 5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927 5928 5929 5930 5931 5932 5933 5934 5935 5936 5937 5938 5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 5958 5959 5960 5961 |
/* return either getbmap/getbmapx structure. */ if (interface & BMV_IF_EXTENDED) { struct getbmapx outx; GETBMAP_CONVERT(out,outx); outx.bmv_oflags = oflags; outx.bmv_unused1 = outx.bmv_unused2 = 0; if (copy_to_user(ap, &outx, sizeof(outx))) { error = XFS_ERROR(EFAULT); goto unlock_and_return; } } else { if (copy_to_user(ap, &out, sizeof(out))) { error = XFS_ERROR(EFAULT); goto unlock_and_return; } } bmv->bmv_offset = out.bmv_offset + out.bmv_length; bmv->bmv_length = MAX((__int64_t)0, (__int64_t)(bmvend - bmv->bmv_offset)); bmv->bmv_entries++; ap = (interface & BMV_IF_EXTENDED) ? (void __user *) ((struct getbmapx __user *)ap + 1) : (void __user *) ((struct getbmap __user *)ap + 1); } } } while (nmap && nexleft && bmv->bmv_length); unlock_and_return: xfs_iunlock_map_shared(ip, lock); xfs_iunlock(ip, XFS_IOLOCK_SHARED); kmem_free(map, subnex * sizeof(*map)); return error; } /* * Check the last inode extent to determine whether this allocation will result * in blocks being allocated at the end of the file. When we allocate new data * blocks at the end of the file which do not start at the previous data block, * we will try to align the new blocks at stripe unit boundaries. */ |
ba0f32d46 [XFS] mark variou... |
5962 |
STATIC int /* error */ |
1da177e4c Linux-2.6.12-rc2 |
5963 5964 5965 5966 5967 5968 5969 5970 |
xfs_bmap_isaeof( xfs_inode_t *ip, /* incore inode pointer */ xfs_fileoff_t off, /* file offset in fsblocks */ int whichfork, /* data or attribute fork */ char *aeof) /* return value */ { int error; /* error return value */ xfs_ifork_t *ifp; /* inode fork pointer */ |
a6f64d4ae [XFS] split ondis... |
5971 |
xfs_bmbt_rec_host_t *lastrec; /* extent record pointer */ |
4eea22f01 [XFS] 929045 5673... |
5972 5973 |
xfs_extnum_t nextents; /* number of file extents */ xfs_bmbt_irec_t s; /* expanded extent record */ |
1da177e4c Linux-2.6.12-rc2 |
5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984 5985 5986 5987 |
ASSERT(whichfork == XFS_DATA_FORK); ifp = XFS_IFORK_PTR(ip, whichfork); if (!(ifp->if_flags & XFS_IFEXTENTS) && (error = xfs_iread_extents(NULL, ip, whichfork))) return error; nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); if (nextents == 0) { *aeof = 1; return 0; } /* * Go to the last extent */ |
4eea22f01 [XFS] 929045 5673... |
5988 |
lastrec = xfs_iext_get_ext(ifp, nextents - 1); |
1da177e4c Linux-2.6.12-rc2 |
5989 5990 5991 5992 5993 5994 5995 5996 5997 5998 5999 6000 6001 6002 6003 6004 6005 6006 6007 6008 6009 6010 6011 6012 6013 6014 |
xfs_bmbt_get_all(lastrec, &s); /* * Check we are allocating in the last extent (for delayed allocations) * or past the last extent for non-delayed allocations. */ *aeof = (off >= s.br_startoff && off < s.br_startoff + s.br_blockcount && ISNULLSTARTBLOCK(s.br_startblock)) || off >= s.br_startoff + s.br_blockcount; return 0; } /* * Check if the endoff is outside the last extent. If so the caller will grow * the allocation to a stripe unit boundary. */ int /* error */ xfs_bmap_eof( xfs_inode_t *ip, /* incore inode pointer */ xfs_fileoff_t endoff, /* file offset in fsblocks */ int whichfork, /* data or attribute fork */ int *eof) /* result value */ { xfs_fsblock_t blockcount; /* extent block count */ int error; /* error return value */ xfs_ifork_t *ifp; /* inode fork pointer */ |
a6f64d4ae [XFS] split ondis... |
6015 |
xfs_bmbt_rec_host_t *lastrec; /* extent record pointer */ |
4eea22f01 [XFS] 929045 5673... |
6016 |
xfs_extnum_t nextents; /* number of file extents */ |
1da177e4c Linux-2.6.12-rc2 |
6017 6018 6019 6020 6021 6022 6023 6024 6025 6026 6027 6028 6029 6030 6031 |
xfs_fileoff_t startoff; /* extent starting file offset */ ASSERT(whichfork == XFS_DATA_FORK); ifp = XFS_IFORK_PTR(ip, whichfork); if (!(ifp->if_flags & XFS_IFEXTENTS) && (error = xfs_iread_extents(NULL, ip, whichfork))) return error; nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); if (nextents == 0) { *eof = 1; return 0; } /* * Go to the last extent */ |
4eea22f01 [XFS] 929045 5673... |
6032 |
lastrec = xfs_iext_get_ext(ifp, nextents - 1); |
1da177e4c Linux-2.6.12-rc2 |
6033 6034 6035 6036 6037 6038 6039 |
startoff = xfs_bmbt_get_startoff(lastrec); blockcount = xfs_bmbt_get_blockcount(lastrec); *eof = endoff >= startoff + blockcount; return 0; } #ifdef DEBUG |
1da177e4c Linux-2.6.12-rc2 |
6040 6041 6042 6043 6044 6045 6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057 6058 6059 6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089 6090 6091 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 |
STATIC xfs_buf_t * xfs_bmap_get_bp( xfs_btree_cur_t *cur, xfs_fsblock_t bno) { int i; xfs_buf_t *bp; if (!cur) return(NULL); bp = NULL; for(i = 0; i < XFS_BTREE_MAXLEVELS; i++) { bp = cur->bc_bufs[i]; if (!bp) break; if (XFS_BUF_ADDR(bp) == bno) break; /* Found it */ } if (i == XFS_BTREE_MAXLEVELS) bp = NULL; if (!bp) { /* Chase down all the log items to see if the bp is there */ xfs_log_item_chunk_t *licp; xfs_trans_t *tp; tp = cur->bc_tp; licp = &tp->t_items; while (!bp && licp != NULL) { if (XFS_LIC_ARE_ALL_FREE(licp)) { licp = licp->lic_next; continue; } for (i = 0; i < licp->lic_unused; i++) { xfs_log_item_desc_t *lidp; xfs_log_item_t *lip; xfs_buf_log_item_t *bip; xfs_buf_t *lbp; if (XFS_LIC_ISFREE(licp, i)) { continue; } lidp = XFS_LIC_SLOT(licp, i); lip = lidp->lid_item; if (lip->li_type != XFS_LI_BUF) continue; bip = (xfs_buf_log_item_t *)lip; lbp = bip->bli_buf; if (XFS_BUF_ADDR(lbp) == bno) { bp = lbp; break; /* Found it */ } } licp = licp->lic_next; } } return(bp); } void xfs_check_block( xfs_bmbt_block_t *block, xfs_mount_t *mp, int root, short sz) { int i, j, dmxr; |
576039cf3 [XFS] endianess a... |
6110 |
__be64 *pp, *thispa; /* pointer to block address */ |
1da177e4c Linux-2.6.12-rc2 |
6111 |
xfs_bmbt_key_t *prevp, *keyp; |
16259e7d9 [XFS] Endianess a... |
6112 |
ASSERT(be16_to_cpu(block->bb_level) > 0); |
1da177e4c Linux-2.6.12-rc2 |
6113 6114 |
prevp = NULL; |
16259e7d9 [XFS] Endianess a... |
6115 |
for( i = 1; i <= be16_to_cpu(block->bb_numrecs); i++) { |
1da177e4c Linux-2.6.12-rc2 |
6116 6117 6118 6119 6120 |
dmxr = mp->m_bmap_dmxr[0]; if (root) { keyp = XFS_BMAP_BROOT_KEY_ADDR(block, i, sz); } else { |
2c36ddeda [XFS] Remove unus... |
6121 |
keyp = XFS_BTREE_KEY_ADDR(xfs_bmbt, block, i); |
1da177e4c Linux-2.6.12-rc2 |
6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 |
} if (prevp) { xfs_btree_check_key(XFS_BTNUM_BMAP, prevp, keyp); } prevp = keyp; /* * Compare the block numbers to see if there are dups. */ if (root) { pp = XFS_BMAP_BROOT_PTR_ADDR(block, i, sz); } else { |
2c36ddeda [XFS] Remove unus... |
6136 |
pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, i, dmxr); |
1da177e4c Linux-2.6.12-rc2 |
6137 |
} |
16259e7d9 [XFS] Endianess a... |
6138 |
for (j = i+1; j <= be16_to_cpu(block->bb_numrecs); j++) { |
1da177e4c Linux-2.6.12-rc2 |
6139 6140 6141 |
if (root) { thispa = XFS_BMAP_BROOT_PTR_ADDR(block, j, sz); } else { |
2c36ddeda [XFS] Remove unus... |
6142 6143 |
thispa = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, j, dmxr); |
1da177e4c Linux-2.6.12-rc2 |
6144 |
} |
576039cf3 [XFS] endianess a... |
6145 |
if (*thispa == *pp) { |
1da177e4c Linux-2.6.12-rc2 |
6146 |
cmn_err(CE_WARN, "%s: thispa(%d) == pp(%d) %Ld", |
34a622b2e [XFS] replace rem... |
6147 |
__func__, j, i, |
576039cf3 [XFS] endianess a... |
6148 |
(unsigned long long)be64_to_cpu(*thispa)); |
1da177e4c Linux-2.6.12-rc2 |
6149 6150 |
panic("%s: ptrs are equal in node ", |
34a622b2e [XFS] replace rem... |
6151 |
__func__); |
1da177e4c Linux-2.6.12-rc2 |
6152 6153 6154 6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171 |
} } } } /* * Check that the extents for the inode ip are in the right order in all * btree leaves. */ STATIC void xfs_bmap_check_leaf_extents( xfs_btree_cur_t *cur, /* btree cursor or null */ xfs_inode_t *ip, /* incore inode pointer */ int whichfork) /* data or attr fork */ { xfs_bmbt_block_t *block; /* current btree block */ xfs_fsblock_t bno; /* block # of "block" */ xfs_buf_t *bp; /* buffer for "block" */ int error; /* error return value */ |
4eea22f01 [XFS] 929045 5673... |
6172 |
xfs_extnum_t i=0, j; /* index into the extents list */ |
1da177e4c Linux-2.6.12-rc2 |
6173 6174 6175 |
xfs_ifork_t *ifp; /* fork structure */ int level; /* btree level, for checking */ xfs_mount_t *mp; /* file system mount structure */ |
576039cf3 [XFS] endianess a... |
6176 |
__be64 *pp; /* pointer to block address */ |
4eea22f01 [XFS] 929045 5673... |
6177 |
xfs_bmbt_rec_t *ep; /* pointer to current extent */ |
2abdb8c88 [XFS] Prevent xfs... |
6178 |
xfs_bmbt_rec_t last = {0, 0}; /* last extent in prev block */ |
4eea22f01 [XFS] 929045 5673... |
6179 |
xfs_bmbt_rec_t *nextp; /* pointer to next extent */ |
1da177e4c Linux-2.6.12-rc2 |
6180 6181 6182 6183 6184 6185 6186 6187 6188 6189 6190 6191 6192 |
int bp_release = 0; if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) { return; } bno = NULLFSBLOCK; mp = ip->i_mount; ifp = XFS_IFORK_PTR(ip, whichfork); block = ifp->if_broot; /* * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. */ |
16259e7d9 [XFS] Endianess a... |
6193 6194 |
level = be16_to_cpu(block->bb_level); ASSERT(level > 0); |
1da177e4c Linux-2.6.12-rc2 |
6195 6196 |
xfs_check_block(block, mp, 1, ifp->if_broot_bytes); pp = XFS_BMAP_BROOT_PTR_ADDR(block, 1, ifp->if_broot_bytes); |
576039cf3 [XFS] endianess a... |
6197 6198 6199 6200 6201 |
bno = be64_to_cpu(*pp); ASSERT(bno != NULLDFSBNO); ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); |
1da177e4c Linux-2.6.12-rc2 |
6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 |
/* * Go down the tree until leaf level is reached, following the first * pointer (leftmost) at each level. */ while (level-- > 0) { /* See if buf is in cur first */ bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); if (bp) { bp_release = 0; } else { bp_release = 1; } if (!bp && (error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp, XFS_BMAP_BTREE_REF))) goto error_norelse; block = XFS_BUF_TO_BMBT_BLOCK(bp); XFS_WANT_CORRUPTED_GOTO( XFS_BMAP_SANITY_CHECK(mp, block, level), error0); if (level == 0) break; /* * Check this block for basic sanity (increasing keys and * no duplicate blocks). */ xfs_check_block(block, mp, 0, 0); |
2c36ddeda [XFS] Remove unus... |
6230 |
pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]); |
576039cf3 [XFS] endianess a... |
6231 6232 |
bno = be64_to_cpu(*pp); XFS_WANT_CORRUPTED_GOTO(XFS_FSB_SANITY_CHECK(mp, bno), error0); |
1da177e4c Linux-2.6.12-rc2 |
6233 6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 |
if (bp_release) { bp_release = 0; xfs_trans_brelse(NULL, bp); } } /* * Here with bp and block set to the leftmost leaf node in the tree. */ i = 0; /* * Loop over all leaf nodes checking that all extents are in the right order. */ |
1da177e4c Linux-2.6.12-rc2 |
6247 |
for (;;) { |
1da177e4c Linux-2.6.12-rc2 |
6248 6249 |
xfs_fsblock_t nextbno; xfs_extnum_t num_recs; |
16259e7d9 [XFS] Endianess a... |
6250 |
num_recs = be16_to_cpu(block->bb_numrecs); |
1da177e4c Linux-2.6.12-rc2 |
6251 6252 6253 6254 |
/* * Read-ahead the next leaf block, if any. */ |
16259e7d9 [XFS] Endianess a... |
6255 |
nextbno = be64_to_cpu(block->bb_rightsib); |
1da177e4c Linux-2.6.12-rc2 |
6256 6257 6258 6259 6260 6261 |
/* * Check all the extents to make sure they are OK. * If we had a previous block, the last entry should * conform with the first entry in this one. */ |
2c36ddeda [XFS] Remove unus... |
6262 |
ep = XFS_BTREE_REC_ADDR(xfs_bmbt, block, 1); |
2abdb8c88 [XFS] Prevent xfs... |
6263 6264 6265 |
if (i) { xfs_btree_check_rec(XFS_BTNUM_BMAP, &last, ep); } |
4eea22f01 [XFS] 929045 5673... |
6266 |
for (j = 1; j < num_recs; j++) { |
2c36ddeda [XFS] Remove unus... |
6267 |
nextp = XFS_BTREE_REC_ADDR(xfs_bmbt, block, j + 1); |
2abdb8c88 [XFS] Prevent xfs... |
6268 |
xfs_btree_check_rec(XFS_BTNUM_BMAP, ep, nextp); |
4eea22f01 [XFS] 929045 5673... |
6269 |
ep = nextp; |
1da177e4c Linux-2.6.12-rc2 |
6270 |
} |
1da177e4c Linux-2.6.12-rc2 |
6271 |
|
2abdb8c88 [XFS] Prevent xfs... |
6272 |
last = *ep; |
1da177e4c Linux-2.6.12-rc2 |
6273 6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 |
i += num_recs; if (bp_release) { bp_release = 0; xfs_trans_brelse(NULL, bp); } bno = nextbno; /* * If we've reached the end, stop. */ if (bno == NULLFSBLOCK) break; bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); if (bp) { bp_release = 0; } else { bp_release = 1; } if (!bp && (error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp, XFS_BMAP_BTREE_REF))) goto error_norelse; block = XFS_BUF_TO_BMBT_BLOCK(bp); } if (bp_release) { bp_release = 0; xfs_trans_brelse(NULL, bp); } return; error0: |
34a622b2e [XFS] replace rem... |
6303 |
cmn_err(CE_WARN, "%s: at error0", __func__); |
1da177e4c Linux-2.6.12-rc2 |
6304 6305 6306 6307 |
if (bp_release) xfs_trans_brelse(NULL, bp); error_norelse: cmn_err(CE_WARN, "%s: BAD after btree leaves for %d extents", |
34a622b2e [XFS] replace rem... |
6308 6309 |
__func__, i); panic("%s: CORRUPTED BTREE OR SOMETHING", __func__); |
1da177e4c Linux-2.6.12-rc2 |
6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 |
return; } #endif /* * Count fsblocks of the given fork. */ int /* error */ xfs_bmap_count_blocks( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode */ int whichfork, /* data or attr fork */ int *count) /* out: count of blocks */ { xfs_bmbt_block_t *block; /* current btree block */ xfs_fsblock_t bno; /* block # of "block" */ xfs_ifork_t *ifp; /* fork structure */ int level; /* btree level, for checking */ xfs_mount_t *mp; /* file system mount structure */ |
576039cf3 [XFS] endianess a... |
6329 |
__be64 *pp; /* pointer to block address */ |
1da177e4c Linux-2.6.12-rc2 |
6330 6331 6332 6333 6334 |
bno = NULLFSBLOCK; mp = ip->i_mount; ifp = XFS_IFORK_PTR(ip, whichfork); if ( XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS ) { |
4eea22f01 [XFS] 929045 5673... |
6335 |
if (unlikely(xfs_bmap_count_leaves(ifp, 0, |
1da177e4c Linux-2.6.12-rc2 |
6336 6337 6338 6339 6340 6341 6342 6343 6344 6345 6346 6347 6348 |
ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t), count) < 0)) { XFS_ERROR_REPORT("xfs_bmap_count_blocks(1)", XFS_ERRLEVEL_LOW, mp); return XFS_ERROR(EFSCORRUPTED); } return 0; } /* * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. */ block = ifp->if_broot; |
16259e7d9 [XFS] Endianess a... |
6349 6350 |
level = be16_to_cpu(block->bb_level); ASSERT(level > 0); |
1da177e4c Linux-2.6.12-rc2 |
6351 |
pp = XFS_BMAP_BROOT_PTR_ADDR(block, 1, ifp->if_broot_bytes); |
576039cf3 [XFS] endianess a... |
6352 6353 6354 6355 |
bno = be64_to_cpu(*pp); ASSERT(bno != NULLDFSBNO); ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); |
1da177e4c Linux-2.6.12-rc2 |
6356 |
|
4eea22f01 [XFS] 929045 5673... |
6357 |
if (unlikely(xfs_bmap_count_tree(mp, tp, ifp, bno, level, count) < 0)) { |
1da177e4c Linux-2.6.12-rc2 |
6358 6359 6360 6361 6362 6363 6364 6365 6366 6367 6368 6369 |
XFS_ERROR_REPORT("xfs_bmap_count_blocks(2)", XFS_ERRLEVEL_LOW, mp); return XFS_ERROR(EFSCORRUPTED); } return 0; } /* * Recursively walks each level of a btree * to count total fsblocks is use. */ |
a8272ce0c [XFS] Fix up spar... |
6370 |
STATIC int /* error */ |
1da177e4c Linux-2.6.12-rc2 |
6371 6372 6373 |
xfs_bmap_count_tree( xfs_mount_t *mp, /* file system mount point */ xfs_trans_t *tp, /* transaction pointer */ |
4eea22f01 [XFS] 929045 5673... |
6374 |
xfs_ifork_t *ifp, /* inode fork pointer */ |
1da177e4c Linux-2.6.12-rc2 |
6375 6376 6377 6378 6379 6380 6381 |
xfs_fsblock_t blockno, /* file system block number */ int levelin, /* level in btree */ int *count) /* Count of blocks */ { int error; xfs_buf_t *bp, *nbp; int level = levelin; |
576039cf3 [XFS] endianess a... |
6382 |
__be64 *pp; |
1da177e4c Linux-2.6.12-rc2 |
6383 6384 6385 6386 |
xfs_fsblock_t bno = blockno; xfs_fsblock_t nextbno; xfs_bmbt_block_t *block, *nextblock; int numrecs; |
1da177e4c Linux-2.6.12-rc2 |
6387 6388 6389 6390 6391 6392 6393 6394 |
if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF))) return error; *count += 1; block = XFS_BUF_TO_BMBT_BLOCK(bp); if (--level) { /* Not at node above leafs, count this level of nodes */ |
16259e7d9 [XFS] Endianess a... |
6395 |
nextbno = be64_to_cpu(block->bb_rightsib); |
1da177e4c Linux-2.6.12-rc2 |
6396 6397 6398 6399 6400 6401 |
while (nextbno != NULLFSBLOCK) { if ((error = xfs_btree_read_bufl(mp, tp, nextbno, 0, &nbp, XFS_BMAP_BTREE_REF))) return error; *count += 1; nextblock = XFS_BUF_TO_BMBT_BLOCK(nbp); |
16259e7d9 [XFS] Endianess a... |
6402 |
nextbno = be64_to_cpu(nextblock->bb_rightsib); |
1da177e4c Linux-2.6.12-rc2 |
6403 6404 6405 6406 |
xfs_trans_brelse(tp, nbp); } /* Dive to the next level */ |
2c36ddeda [XFS] Remove unus... |
6407 |
pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]); |
576039cf3 [XFS] endianess a... |
6408 |
bno = be64_to_cpu(*pp); |
1da177e4c Linux-2.6.12-rc2 |
6409 |
if (unlikely((error = |
4eea22f01 [XFS] 929045 5673... |
6410 |
xfs_bmap_count_tree(mp, tp, ifp, bno, level, count)) < 0)) { |
1da177e4c Linux-2.6.12-rc2 |
6411 6412 6413 6414 6415 6416 6417 6418 6419 |
xfs_trans_brelse(tp, bp); XFS_ERROR_REPORT("xfs_bmap_count_tree(1)", XFS_ERRLEVEL_LOW, mp); return XFS_ERROR(EFSCORRUPTED); } xfs_trans_brelse(tp, bp); } else { /* count all level 1 nodes and their leaves */ for (;;) { |
16259e7d9 [XFS] Endianess a... |
6420 6421 |
nextbno = be64_to_cpu(block->bb_rightsib); numrecs = be16_to_cpu(block->bb_numrecs); |
e9ed9d224 [XFS] remove more... |
6422 6423 |
if (unlikely(xfs_bmap_disk_count_leaves(0, block, numrecs, count) < 0)) { |
1da177e4c Linux-2.6.12-rc2 |
6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 |
xfs_trans_brelse(tp, bp); XFS_ERROR_REPORT("xfs_bmap_count_tree(2)", XFS_ERRLEVEL_LOW, mp); return XFS_ERROR(EFSCORRUPTED); } xfs_trans_brelse(tp, bp); if (nextbno == NULLFSBLOCK) break; bno = nextbno; if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF))) return error; *count += 1; block = XFS_BUF_TO_BMBT_BLOCK(bp); } } return 0; } /* |
4eea22f01 [XFS] 929045 5673... |
6444 |
* Count leaf blocks given a range of extent records. |
1da177e4c Linux-2.6.12-rc2 |
6445 |
*/ |
a8272ce0c [XFS] Fix up spar... |
6446 |
STATIC int |
1da177e4c Linux-2.6.12-rc2 |
6447 |
xfs_bmap_count_leaves( |
4eea22f01 [XFS] 929045 5673... |
6448 6449 |
xfs_ifork_t *ifp, xfs_extnum_t idx, |
1da177e4c Linux-2.6.12-rc2 |
6450 6451 6452 6453 |
int numrecs, int *count) { int b; |
4eea22f01 [XFS] 929045 5673... |
6454 |
for (b = 0; b < numrecs; b++) { |
a6f64d4ae [XFS] split ondis... |
6455 |
xfs_bmbt_rec_host_t *frp = xfs_iext_get_ext(ifp, idx + b); |
91e11088f [XFS] Fixing size... |
6456 |
*count += xfs_bmbt_get_blockcount(frp); |
4eea22f01 [XFS] 929045 5673... |
6457 |
} |
91e11088f [XFS] Fixing size... |
6458 6459 6460 6461 |
return 0; } /* |
4eea22f01 [XFS] 929045 5673... |
6462 6463 |
* Count leaf blocks given a range of extent records originally * in btree format. |
91e11088f [XFS] Fixing size... |
6464 |
*/ |
a8272ce0c [XFS] Fix up spar... |
6465 |
STATIC int |
91e11088f [XFS] Fixing size... |
6466 |
xfs_bmap_disk_count_leaves( |
4eea22f01 [XFS] 929045 5673... |
6467 6468 |
xfs_extnum_t idx, xfs_bmbt_block_t *block, |
91e11088f [XFS] Fixing size... |
6469 6470 6471 6472 |
int numrecs, int *count) { int b; |
4eea22f01 [XFS] 929045 5673... |
6473 |
xfs_bmbt_rec_t *frp; |
91e11088f [XFS] Fixing size... |
6474 |
|
4eea22f01 [XFS] 929045 5673... |
6475 |
for (b = 1; b <= numrecs; b++) { |
2c36ddeda [XFS] Remove unus... |
6476 |
frp = XFS_BTREE_REC_ADDR(xfs_bmbt, block, idx + b); |
1da177e4c Linux-2.6.12-rc2 |
6477 |
*count += xfs_bmbt_disk_get_blockcount(frp); |
4eea22f01 [XFS] 929045 5673... |
6478 |
} |
1da177e4c Linux-2.6.12-rc2 |
6479 6480 |
return 0; } |