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fs/ocfs2/suballoc.c
62.4 KB
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/* -*- mode: c; c-basic-offset: 8; -*- * vim: noexpandtab sw=8 ts=8 sts=0: * * suballoc.c * * metadata alloc and free * Inspired by ext3 block groups. * * Copyright (C) 2002, 2004 Oracle. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will 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. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #include <linux/fs.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/highmem.h> #define MLOG_MASK_PREFIX ML_DISK_ALLOC #include <cluster/masklog.h> #include "ocfs2.h" #include "alloc.h" |
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#include "blockcheck.h" |
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#include "dlmglue.h" #include "inode.h" #include "journal.h" #include "localalloc.h" #include "suballoc.h" #include "super.h" #include "sysfile.h" #include "uptodate.h" #include "buffer_head_io.h" |
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#define NOT_ALLOC_NEW_GROUP 0 |
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#define ALLOC_NEW_GROUP 0x1 #define ALLOC_GROUPS_FROM_GLOBAL 0x2 |
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|
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#define OCFS2_MAX_INODES_TO_STEAL 1024 |
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static inline void ocfs2_debug_bg(struct ocfs2_group_desc *bg); static inline void ocfs2_debug_suballoc_inode(struct ocfs2_dinode *fe); static inline u16 ocfs2_find_victim_chain(struct ocfs2_chain_list *cl); |
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static int ocfs2_block_group_fill(handle_t *handle, |
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struct inode *alloc_inode, struct buffer_head *bg_bh, u64 group_blkno, u16 my_chain, struct ocfs2_chain_list *cl); static int ocfs2_block_group_alloc(struct ocfs2_super *osb, struct inode *alloc_inode, |
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struct buffer_head *bh, |
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u64 max_block, |
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u64 *last_alloc_group, |
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int flags); |
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|
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static int ocfs2_cluster_group_search(struct inode *inode, struct buffer_head *group_bh, u32 bits_wanted, u32 min_bits, |
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u64 max_block, |
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u16 *bit_off, u16 *bits_found); static int ocfs2_block_group_search(struct inode *inode, struct buffer_head *group_bh, u32 bits_wanted, u32 min_bits, |
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u64 max_block, |
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u16 *bit_off, u16 *bits_found); |
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static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb, struct ocfs2_alloc_context *ac, |
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handle_t *handle, |
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u32 bits_wanted, u32 min_bits, u16 *bit_off, unsigned int *num_bits, u64 *bg_blkno); static int ocfs2_test_bg_bit_allocatable(struct buffer_head *bg_bh, int nr); |
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static inline int ocfs2_block_group_set_bits(handle_t *handle, |
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struct inode *alloc_inode, struct ocfs2_group_desc *bg, struct buffer_head *group_bh, unsigned int bit_off, unsigned int num_bits); |
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static inline int ocfs2_block_group_clear_bits(handle_t *handle, |
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struct inode *alloc_inode, struct ocfs2_group_desc *bg, struct buffer_head *group_bh, unsigned int bit_off, unsigned int num_bits); |
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static int ocfs2_relink_block_group(handle_t *handle, |
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struct inode *alloc_inode, struct buffer_head *fe_bh, struct buffer_head *bg_bh, struct buffer_head *prev_bg_bh, u16 chain); static inline int ocfs2_block_group_reasonably_empty(struct ocfs2_group_desc *bg, u32 wanted); |
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static inline u32 ocfs2_desc_bitmap_to_cluster_off(struct inode *inode, u64 bg_blkno, u16 bg_bit_off); |
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static inline void ocfs2_block_to_cluster_group(struct inode *inode, u64 data_blkno, u64 *bg_blkno, u16 *bg_bit_off); |
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static int ocfs2_reserve_clusters_with_limit(struct ocfs2_super *osb, u32 bits_wanted, u64 max_block, |
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int flags, |
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struct ocfs2_alloc_context **ac); |
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|
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void ocfs2_free_ac_resource(struct ocfs2_alloc_context *ac) |
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{ |
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struct inode *inode = ac->ac_inode; if (inode) { if (ac->ac_which != OCFS2_AC_USE_LOCAL) |
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ocfs2_inode_unlock(inode, 1); |
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mutex_unlock(&inode->i_mutex); iput(inode); |
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ac->ac_inode = NULL; |
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} |
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brelse(ac->ac_bh); ac->ac_bh = NULL; |
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} void ocfs2_free_alloc_context(struct ocfs2_alloc_context *ac) { ocfs2_free_ac_resource(ac); |
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kfree(ac); } static u32 ocfs2_bits_per_group(struct ocfs2_chain_list *cl) { return (u32)le16_to_cpu(cl->cl_cpg) * (u32)le16_to_cpu(cl->cl_bpc); } |
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#define do_error(fmt, ...) \ do{ \ if (clean_error) \ mlog(ML_ERROR, fmt " ", ##__VA_ARGS__); \ else \ ocfs2_error(sb, fmt, ##__VA_ARGS__); \ } while (0) |
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static int ocfs2_validate_gd_self(struct super_block *sb, struct buffer_head *bh, int clean_error) { struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data; |
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if (!OCFS2_IS_VALID_GROUP_DESC(gd)) { |
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do_error("Group descriptor #%llu has bad signature %.*s", (unsigned long long)bh->b_blocknr, 7, |
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gd->bg_signature); return -EINVAL; |
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} |
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if (le64_to_cpu(gd->bg_blkno) != bh->b_blocknr) { do_error("Group descriptor #%llu has an invalid bg_blkno " "of %llu", (unsigned long long)bh->b_blocknr, (unsigned long long)le64_to_cpu(gd->bg_blkno)); return -EINVAL; } if (le32_to_cpu(gd->bg_generation) != OCFS2_SB(sb)->fs_generation) { do_error("Group descriptor #%llu has an invalid " "fs_generation of #%u", (unsigned long long)bh->b_blocknr, le32_to_cpu(gd->bg_generation)); return -EINVAL; } |
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if (le16_to_cpu(gd->bg_free_bits_count) > le16_to_cpu(gd->bg_bits)) { do_error("Group descriptor #%llu has bit count %u but " "claims that %u are free", (unsigned long long)bh->b_blocknr, le16_to_cpu(gd->bg_bits), le16_to_cpu(gd->bg_free_bits_count)); return -EINVAL; } if (le16_to_cpu(gd->bg_bits) > (8 * le16_to_cpu(gd->bg_size))) { do_error("Group descriptor #%llu has bit count %u but " "max bitmap bits of %u", (unsigned long long)bh->b_blocknr, le16_to_cpu(gd->bg_bits), 8 * le16_to_cpu(gd->bg_size)); return -EINVAL; } return 0; } static int ocfs2_validate_gd_parent(struct super_block *sb, struct ocfs2_dinode *di, struct buffer_head *bh, int clean_error) { unsigned int max_bits; struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data; |
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if (di->i_blkno != gd->bg_parent_dinode) { |
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do_error("Group descriptor #%llu has bad parent " |
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"pointer (%llu, expected %llu)", |
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(unsigned long long)bh->b_blocknr, |
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(unsigned long long)le64_to_cpu(gd->bg_parent_dinode), (unsigned long long)le64_to_cpu(di->i_blkno)); return -EINVAL; |
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} max_bits = le16_to_cpu(di->id2.i_chain.cl_cpg) * le16_to_cpu(di->id2.i_chain.cl_bpc); if (le16_to_cpu(gd->bg_bits) > max_bits) { |
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do_error("Group descriptor #%llu has bit count of %u", (unsigned long long)bh->b_blocknr, |
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le16_to_cpu(gd->bg_bits)); return -EINVAL; |
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} if (le16_to_cpu(gd->bg_chain) >= le16_to_cpu(di->id2.i_chain.cl_next_free_rec)) { |
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do_error("Group descriptor #%llu has bad chain %u", (unsigned long long)bh->b_blocknr, |
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le16_to_cpu(gd->bg_chain)); return -EINVAL; |
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} |
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return 0; } |
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|
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#undef do_error |
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|
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/* * This version only prints errors. It does not fail the filesystem, and * exists only for resize. */ int ocfs2_check_group_descriptor(struct super_block *sb, struct ocfs2_dinode *di, struct buffer_head *bh) { int rc; |
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struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data; BUG_ON(!buffer_uptodate(bh)); |
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|
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/* * If the ecc fails, we return the error but otherwise * leave the filesystem running. We know any error is * local to this block. */ rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &gd->bg_check); |
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if (rc) { mlog(ML_ERROR, "Checksum failed for group descriptor %llu ", (unsigned long long)bh->b_blocknr); } else |
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rc = ocfs2_validate_gd_self(sb, bh, 1); |
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if (!rc) rc = ocfs2_validate_gd_parent(sb, di, bh, 1); return rc; } static int ocfs2_validate_group_descriptor(struct super_block *sb, struct buffer_head *bh) { |
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int rc; struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data; |
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mlog(0, "Validating group descriptor %llu ", (unsigned long long)bh->b_blocknr); |
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BUG_ON(!buffer_uptodate(bh)); /* * If the ecc fails, we return the error but otherwise * leave the filesystem running. We know any error is * local to this block. */ rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &gd->bg_check); if (rc) return rc; /* * Errors after here are fatal. */ |
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return ocfs2_validate_gd_self(sb, bh, 0); |
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} |
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int ocfs2_read_group_descriptor(struct inode *inode, struct ocfs2_dinode *di, u64 gd_blkno, struct buffer_head **bh) { int rc; struct buffer_head *tmp = *bh; |
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rc = ocfs2_read_block(inode, gd_blkno, &tmp, ocfs2_validate_group_descriptor); |
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if (rc) goto out; |
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rc = ocfs2_validate_gd_parent(inode->i_sb, di, tmp, 0); |
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if (rc) { brelse(tmp); goto out; } /* If ocfs2_read_block() got us a new bh, pass it up. */ if (!*bh) *bh = tmp; out: return rc; } |
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static int ocfs2_block_group_fill(handle_t *handle, |
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struct inode *alloc_inode, struct buffer_head *bg_bh, u64 group_blkno, u16 my_chain, struct ocfs2_chain_list *cl) { int status = 0; struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data; struct super_block * sb = alloc_inode->i_sb; mlog_entry_void(); if (((unsigned long long) bg_bh->b_blocknr) != group_blkno) { |
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ocfs2_error(alloc_inode->i_sb, "group block (%llu) != " "b_blocknr (%llu)", (unsigned long long)group_blkno, |
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(unsigned long long) bg_bh->b_blocknr); status = -EIO; goto bail; } |
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status = ocfs2_journal_access_gd(handle, alloc_inode, bg_bh, OCFS2_JOURNAL_ACCESS_CREATE); |
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if (status < 0) { mlog_errno(status); goto bail; } memset(bg, 0, sb->s_blocksize); strcpy(bg->bg_signature, OCFS2_GROUP_DESC_SIGNATURE); bg->bg_generation = cpu_to_le32(OCFS2_SB(sb)->fs_generation); bg->bg_size = cpu_to_le16(ocfs2_group_bitmap_size(sb)); bg->bg_bits = cpu_to_le16(ocfs2_bits_per_group(cl)); bg->bg_chain = cpu_to_le16(my_chain); bg->bg_next_group = cl->cl_recs[my_chain].c_blkno; bg->bg_parent_dinode = cpu_to_le64(OCFS2_I(alloc_inode)->ip_blkno); bg->bg_blkno = cpu_to_le64(group_blkno); /* set the 1st bit in the bitmap to account for the descriptor block */ ocfs2_set_bit(0, (unsigned long *)bg->bg_bitmap); bg->bg_free_bits_count = cpu_to_le16(le16_to_cpu(bg->bg_bits) - 1); status = ocfs2_journal_dirty(handle, bg_bh); if (status < 0) mlog_errno(status); /* There is no need to zero out or otherwise initialize the * other blocks in a group - All valid FS metadata in a block * group stores the superblock fs_generation value at * allocation time. */ bail: mlog_exit(status); return status; } static inline u16 ocfs2_find_smallest_chain(struct ocfs2_chain_list *cl) { u16 curr, best; best = curr = 0; while (curr < le16_to_cpu(cl->cl_count)) { if (le32_to_cpu(cl->cl_recs[best].c_total) > le32_to_cpu(cl->cl_recs[curr].c_total)) best = curr; curr++; } return best; } /* * We expect the block group allocator to already be locked. */ static int ocfs2_block_group_alloc(struct ocfs2_super *osb, struct inode *alloc_inode, |
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struct buffer_head *bh, |
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u64 max_block, |
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u64 *last_alloc_group, |
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int flags) |
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{ int status, credits; struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; struct ocfs2_chain_list *cl; struct ocfs2_alloc_context *ac = NULL; |
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handle_t *handle = NULL; |
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u32 bit_off, num_bits; u16 alloc_rec; u64 bg_blkno; struct buffer_head *bg_bh = NULL; struct ocfs2_group_desc *bg; BUG_ON(ocfs2_is_cluster_bitmap(alloc_inode)); mlog_entry_void(); |
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cl = &fe->id2.i_chain; |
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status = ocfs2_reserve_clusters_with_limit(osb, le16_to_cpu(cl->cl_cpg), |
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max_block, flags, &ac); |
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if (status < 0) { if (status != -ENOSPC) mlog_errno(status); goto bail; } credits = ocfs2_calc_group_alloc_credits(osb->sb, le16_to_cpu(cl->cl_cpg)); |
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handle = ocfs2_start_trans(osb, credits); |
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if (IS_ERR(handle)) { status = PTR_ERR(handle); handle = NULL; mlog_errno(status); goto bail; } |
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if (last_alloc_group && *last_alloc_group != 0) { mlog(0, "use old allocation group %llu for block group alloc ", (unsigned long long)*last_alloc_group); ac->ac_last_group = *last_alloc_group; } |
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status = ocfs2_claim_clusters(osb, handle, ac, le16_to_cpu(cl->cl_cpg), &bit_off, &num_bits); if (status < 0) { if (status != -ENOSPC) mlog_errno(status); goto bail; } alloc_rec = ocfs2_find_smallest_chain(cl); /* setup the group */ bg_blkno = ocfs2_clusters_to_blocks(osb->sb, bit_off); |
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mlog(0, "new descriptor, record %u, at block %llu ", alloc_rec, (unsigned long long)bg_blkno); |
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bg_bh = sb_getblk(osb->sb, bg_blkno); if (!bg_bh) { status = -EIO; mlog_errno(status); goto bail; } ocfs2_set_new_buffer_uptodate(alloc_inode, bg_bh); status = ocfs2_block_group_fill(handle, alloc_inode, bg_bh, bg_blkno, alloc_rec, cl); if (status < 0) { mlog_errno(status); goto bail; } bg = (struct ocfs2_group_desc *) bg_bh->b_data; |
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status = ocfs2_journal_access_di(handle, alloc_inode, bh, OCFS2_JOURNAL_ACCESS_WRITE); |
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if (status < 0) { mlog_errno(status); goto bail; } le32_add_cpu(&cl->cl_recs[alloc_rec].c_free, le16_to_cpu(bg->bg_free_bits_count)); le32_add_cpu(&cl->cl_recs[alloc_rec].c_total, le16_to_cpu(bg->bg_bits)); cl->cl_recs[alloc_rec].c_blkno = cpu_to_le64(bg_blkno); if (le16_to_cpu(cl->cl_next_free_rec) < le16_to_cpu(cl->cl_count)) le16_add_cpu(&cl->cl_next_free_rec, 1); le32_add_cpu(&fe->id1.bitmap1.i_used, le16_to_cpu(bg->bg_bits) - le16_to_cpu(bg->bg_free_bits_count)); le32_add_cpu(&fe->id1.bitmap1.i_total, le16_to_cpu(bg->bg_bits)); le32_add_cpu(&fe->i_clusters, le16_to_cpu(cl->cl_cpg)); status = ocfs2_journal_dirty(handle, bh); if (status < 0) { mlog_errno(status); goto bail; } spin_lock(&OCFS2_I(alloc_inode)->ip_lock); OCFS2_I(alloc_inode)->ip_clusters = le32_to_cpu(fe->i_clusters); fe->i_size = cpu_to_le64(ocfs2_clusters_to_bytes(alloc_inode->i_sb, le32_to_cpu(fe->i_clusters))); spin_unlock(&OCFS2_I(alloc_inode)->ip_lock); i_size_write(alloc_inode, le64_to_cpu(fe->i_size)); |
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alloc_inode->i_blocks = ocfs2_inode_sector_count(alloc_inode); |
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status = 0; |
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/* save the new last alloc group so that the caller can cache it. */ if (last_alloc_group) *last_alloc_group = ac->ac_last_group; |
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516 517 |
bail: if (handle) |
02dc1af44 ocfs2: pass ocfs2... |
518 |
ocfs2_commit_trans(osb, handle); |
ccd979bdb [PATCH] OCFS2: Th... |
519 520 521 |
if (ac) ocfs2_free_alloc_context(ac); |
a81cb88b6 ocfs2: Don't chec... |
522 |
brelse(bg_bh); |
ccd979bdb [PATCH] OCFS2: Th... |
523 524 525 526 527 528 |
mlog_exit(status); return status; } static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb, |
da5cbf2f9 ocfs2: don't use ... |
529 530 |
struct ocfs2_alloc_context *ac, int type, |
ffda89a3b ocfs2: Add a new ... |
531 |
u32 slot, |
feb473a6e ocfs2: Optimize i... |
532 |
u64 *last_alloc_group, |
60ca81e82 ocfs2: Allocate i... |
533 |
int flags) |
ccd979bdb [PATCH] OCFS2: Th... |
534 535 536 |
{ int status; u32 bits_wanted = ac->ac_bits_wanted; |
da5cbf2f9 ocfs2: don't use ... |
537 |
struct inode *alloc_inode; |
ccd979bdb [PATCH] OCFS2: Th... |
538 |
struct buffer_head *bh = NULL; |
ccd979bdb [PATCH] OCFS2: Th... |
539 540 541 542 |
struct ocfs2_dinode *fe; u32 free_bits; mlog_entry_void(); |
da5cbf2f9 ocfs2: don't use ... |
543 544 545 546 547 |
alloc_inode = ocfs2_get_system_file_inode(osb, type, slot); if (!alloc_inode) { mlog_errno(-EINVAL); return -EINVAL; } |
ccd979bdb [PATCH] OCFS2: Th... |
548 |
|
da5cbf2f9 ocfs2: don't use ... |
549 |
mutex_lock(&alloc_inode->i_mutex); |
e63aecb65 ocfs2: Rename ocf... |
550 |
status = ocfs2_inode_lock(alloc_inode, &bh, 1); |
ccd979bdb [PATCH] OCFS2: Th... |
551 |
if (status < 0) { |
da5cbf2f9 ocfs2: don't use ... |
552 553 |
mutex_unlock(&alloc_inode->i_mutex); iput(alloc_inode); |
ccd979bdb [PATCH] OCFS2: Th... |
554 |
mlog_errno(status); |
da5cbf2f9 ocfs2: don't use ... |
555 |
return status; |
ccd979bdb [PATCH] OCFS2: Th... |
556 |
} |
da5cbf2f9 ocfs2: don't use ... |
557 |
ac->ac_inode = alloc_inode; |
a4a489116 ocfs2: Add ac_all... |
558 |
ac->ac_alloc_slot = slot; |
da5cbf2f9 ocfs2: don't use ... |
559 |
|
ccd979bdb [PATCH] OCFS2: Th... |
560 |
fe = (struct ocfs2_dinode *) bh->b_data; |
10995aa24 ocfs2: Morph the ... |
561 562 563 564 |
/* The bh was validated by the inode read inside * ocfs2_inode_lock(). Any corruption is a code bug. */ BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); |
ccd979bdb [PATCH] OCFS2: Th... |
565 |
if (!(fe->i_flags & cpu_to_le32(OCFS2_CHAIN_FL))) { |
b0697053f ocfs2: don't use ... |
566 567 |
ocfs2_error(alloc_inode->i_sb, "Invalid chain allocator %llu", (unsigned long long)le64_to_cpu(fe->i_blkno)); |
ccd979bdb [PATCH] OCFS2: Th... |
568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 |
status = -EIO; goto bail; } free_bits = le32_to_cpu(fe->id1.bitmap1.i_total) - le32_to_cpu(fe->id1.bitmap1.i_used); if (bits_wanted > free_bits) { /* cluster bitmap never grows */ if (ocfs2_is_cluster_bitmap(alloc_inode)) { mlog(0, "Disk Full: wanted=%u, free_bits=%u ", bits_wanted, free_bits); status = -ENOSPC; goto bail; } |
60ca81e82 ocfs2: Allocate i... |
584 |
if (!(flags & ALLOC_NEW_GROUP)) { |
ffda89a3b ocfs2: Add a new ... |
585 586 587 588 589 590 591 |
mlog(0, "Alloc File %u Full: wanted=%u, free_bits=%u, " "and we don't alloc a new group for it. ", slot, bits_wanted, free_bits); status = -ENOSPC; goto bail; } |
1187c9688 ocfs2: Limit inod... |
592 |
status = ocfs2_block_group_alloc(osb, alloc_inode, bh, |
feb473a6e ocfs2: Optimize i... |
593 594 |
ac->ac_max_block, last_alloc_group, flags); |
ccd979bdb [PATCH] OCFS2: Th... |
595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 |
if (status < 0) { if (status != -ENOSPC) mlog_errno(status); goto bail; } atomic_inc(&osb->alloc_stats.bg_extends); /* You should never ask for this much metadata */ BUG_ON(bits_wanted > (le32_to_cpu(fe->id1.bitmap1.i_total) - le32_to_cpu(fe->id1.bitmap1.i_used))); } get_bh(bh); ac->ac_bh = bh; bail: |
a81cb88b6 ocfs2: Don't chec... |
611 |
brelse(bh); |
ccd979bdb [PATCH] OCFS2: Th... |
612 613 614 615 |
mlog_exit(status); return status; } |
cf1d6c763 ocfs2: Add extend... |
616 617 618 |
int ocfs2_reserve_new_metadata_blocks(struct ocfs2_super *osb, int blocks, struct ocfs2_alloc_context **ac) |
ccd979bdb [PATCH] OCFS2: Th... |
619 620 |
{ int status; |
da5cbf2f9 ocfs2: don't use ... |
621 |
u32 slot; |
ccd979bdb [PATCH] OCFS2: Th... |
622 |
|
cd8612808 [PATCH] Fix numer... |
623 |
*ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL); |
ccd979bdb [PATCH] OCFS2: Th... |
624 625 626 627 628 |
if (!(*ac)) { status = -ENOMEM; mlog_errno(status); goto bail; } |
cf1d6c763 ocfs2: Add extend... |
629 |
(*ac)->ac_bits_wanted = blocks; |
ccd979bdb [PATCH] OCFS2: Th... |
630 |
(*ac)->ac_which = OCFS2_AC_USE_META; |
da5cbf2f9 ocfs2: don't use ... |
631 |
slot = osb->slot_num; |
ccd979bdb [PATCH] OCFS2: Th... |
632 |
(*ac)->ac_group_search = ocfs2_block_group_search; |
da5cbf2f9 ocfs2: don't use ... |
633 |
status = ocfs2_reserve_suballoc_bits(osb, (*ac), |
ffda89a3b ocfs2: Add a new ... |
634 |
EXTENT_ALLOC_SYSTEM_INODE, |
feb473a6e ocfs2: Optimize i... |
635 |
slot, NULL, ALLOC_NEW_GROUP); |
ccd979bdb [PATCH] OCFS2: Th... |
636 637 638 639 640 641 642 643 644 645 646 647 |
if (status < 0) { if (status != -ENOSPC) mlog_errno(status); goto bail; } status = 0; bail: if ((status < 0) && *ac) { ocfs2_free_alloc_context(*ac); *ac = NULL; } |
ccd979bdb [PATCH] OCFS2: Th... |
648 649 650 |
mlog_exit(status); return status; } |
cf1d6c763 ocfs2: Add extend... |
651 652 653 654 655 656 657 658 |
int ocfs2_reserve_new_metadata(struct ocfs2_super *osb, struct ocfs2_extent_list *root_el, struct ocfs2_alloc_context **ac) { return ocfs2_reserve_new_metadata_blocks(osb, ocfs2_extend_meta_needed(root_el), ac); } |
4d0ddb2ce ocfs2: Add inode ... |
659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 |
static int ocfs2_steal_inode_from_other_nodes(struct ocfs2_super *osb, struct ocfs2_alloc_context *ac) { int i, status = -ENOSPC; s16 slot = ocfs2_get_inode_steal_slot(osb); /* Start to steal inodes from the first slot after ours. */ if (slot == OCFS2_INVALID_SLOT) slot = osb->slot_num + 1; for (i = 0; i < osb->max_slots; i++, slot++) { if (slot == osb->max_slots) slot = 0; if (slot == osb->slot_num) continue; status = ocfs2_reserve_suballoc_bits(osb, ac, INODE_ALLOC_SYSTEM_INODE, |
feb473a6e ocfs2: Optimize i... |
678 679 |
slot, NULL, NOT_ALLOC_NEW_GROUP); |
4d0ddb2ce ocfs2: Add inode ... |
680 681 682 683 684 685 686 687 688 689 |
if (status >= 0) { ocfs2_set_inode_steal_slot(osb, slot); break; } ocfs2_free_ac_resource(ac); } return status; } |
ccd979bdb [PATCH] OCFS2: Th... |
690 |
int ocfs2_reserve_new_inode(struct ocfs2_super *osb, |
ccd979bdb [PATCH] OCFS2: Th... |
691 692 693 |
struct ocfs2_alloc_context **ac) { int status; |
4d0ddb2ce ocfs2: Add inode ... |
694 |
s16 slot = ocfs2_get_inode_steal_slot(osb); |
feb473a6e ocfs2: Optimize i... |
695 |
u64 alloc_group; |
ccd979bdb [PATCH] OCFS2: Th... |
696 |
|
cd8612808 [PATCH] Fix numer... |
697 |
*ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL); |
ccd979bdb [PATCH] OCFS2: Th... |
698 699 700 701 702 703 704 |
if (!(*ac)) { status = -ENOMEM; mlog_errno(status); goto bail; } (*ac)->ac_bits_wanted = 1; |
ccd979bdb [PATCH] OCFS2: Th... |
705 |
(*ac)->ac_which = OCFS2_AC_USE_INODE; |
ccd979bdb [PATCH] OCFS2: Th... |
706 |
(*ac)->ac_group_search = ocfs2_block_group_search; |
4d0ddb2ce ocfs2: Add inode ... |
707 |
/* |
1187c9688 ocfs2: Limit inod... |
708 709 |
* stat(2) can't handle i_ino > 32bits, so we tell the * lower levels not to allocate us a block group past that |
12462f1d9 ocfs2: Add the 'i... |
710 |
* limit. The 'inode64' mount option avoids this behavior. |
1187c9688 ocfs2: Limit inod... |
711 |
*/ |
12462f1d9 ocfs2: Add the 'i... |
712 713 |
if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64)) (*ac)->ac_max_block = (u32)~0U; |
1187c9688 ocfs2: Limit inod... |
714 715 |
/* |
4d0ddb2ce ocfs2: Add inode ... |
716 717 718 719 720 721 722 723 724 725 726 727 728 |
* slot is set when we successfully steal inode from other nodes. * It is reset in 3 places: * 1. when we flush the truncate log * 2. when we complete local alloc recovery. * 3. when we successfully allocate from our own slot. * After it is set, we will go on stealing inodes until we find the * need to check our slots to see whether there is some space for us. */ if (slot != OCFS2_INVALID_SLOT && atomic_read(&osb->s_num_inodes_stolen) < OCFS2_MAX_INODES_TO_STEAL) goto inode_steal; atomic_set(&osb->s_num_inodes_stolen, 0); |
feb473a6e ocfs2: Optimize i... |
729 |
alloc_group = osb->osb_inode_alloc_group; |
da5cbf2f9 ocfs2: don't use ... |
730 731 |
status = ocfs2_reserve_suballoc_bits(osb, *ac, INODE_ALLOC_SYSTEM_INODE, |
60ca81e82 ocfs2: Allocate i... |
732 |
osb->slot_num, |
feb473a6e ocfs2: Optimize i... |
733 |
&alloc_group, |
60ca81e82 ocfs2: Allocate i... |
734 735 |
ALLOC_NEW_GROUP | ALLOC_GROUPS_FROM_GLOBAL); |
4d0ddb2ce ocfs2: Add inode ... |
736 737 |
if (status >= 0) { status = 0; |
feb473a6e ocfs2: Optimize i... |
738 739 740 741 742 743 |
spin_lock(&osb->osb_lock); osb->osb_inode_alloc_group = alloc_group; spin_unlock(&osb->osb_lock); mlog(0, "after reservation, new allocation group is " "%llu ", (unsigned long long)alloc_group); |
4d0ddb2ce ocfs2: Add inode ... |
744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 |
/* * Some inodes must be freed by us, so try to allocate * from our own next time. */ if (slot != OCFS2_INVALID_SLOT) ocfs2_init_inode_steal_slot(osb); goto bail; } else if (status < 0 && status != -ENOSPC) { mlog_errno(status); goto bail; } ocfs2_free_ac_resource(*ac); inode_steal: status = ocfs2_steal_inode_from_other_nodes(osb, *ac); atomic_inc(&osb->s_num_inodes_stolen); |
ccd979bdb [PATCH] OCFS2: Th... |
761 762 763 764 765 766 767 768 769 770 771 772 |
if (status < 0) { if (status != -ENOSPC) mlog_errno(status); goto bail; } status = 0; bail: if ((status < 0) && *ac) { ocfs2_free_alloc_context(*ac); *ac = NULL; } |
ccd979bdb [PATCH] OCFS2: Th... |
773 774 775 776 777 778 779 780 781 782 |
mlog_exit(status); return status; } /* local alloc code has to do the same thing, so rather than do this * twice.. */ int ocfs2_reserve_cluster_bitmap_bits(struct ocfs2_super *osb, struct ocfs2_alloc_context *ac) { int status; |
ccd979bdb [PATCH] OCFS2: Th... |
783 784 |
ac->ac_which = OCFS2_AC_USE_MAIN; ac->ac_group_search = ocfs2_cluster_group_search; |
da5cbf2f9 ocfs2: don't use ... |
785 786 |
status = ocfs2_reserve_suballoc_bits(osb, ac, GLOBAL_BITMAP_SYSTEM_INODE, |
feb473a6e ocfs2: Optimize i... |
787 |
OCFS2_INVALID_SLOT, NULL, |
ffda89a3b ocfs2: Add a new ... |
788 |
ALLOC_NEW_GROUP); |
da5cbf2f9 ocfs2: don't use ... |
789 |
if (status < 0 && status != -ENOSPC) { |
ccd979bdb [PATCH] OCFS2: Th... |
790 |
mlog_errno(status); |
da5cbf2f9 ocfs2: don't use ... |
791 792 |
goto bail; } |
ccd979bdb [PATCH] OCFS2: Th... |
793 794 795 796 797 798 799 |
bail: return status; } /* Callers don't need to care which bitmap (local alloc or main) to * use so we figure it out for them, but unfortunately this clutters * things a bit. */ |
1187c9688 ocfs2: Limit inod... |
800 801 |
static int ocfs2_reserve_clusters_with_limit(struct ocfs2_super *osb, u32 bits_wanted, u64 max_block, |
60ca81e82 ocfs2: Allocate i... |
802 |
int flags, |
1187c9688 ocfs2: Limit inod... |
803 |
struct ocfs2_alloc_context **ac) |
ccd979bdb [PATCH] OCFS2: Th... |
804 805 806 807 |
{ int status; mlog_entry_void(); |
cd8612808 [PATCH] Fix numer... |
808 |
*ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL); |
ccd979bdb [PATCH] OCFS2: Th... |
809 810 811 812 813 814 815 |
if (!(*ac)) { status = -ENOMEM; mlog_errno(status); goto bail; } (*ac)->ac_bits_wanted = bits_wanted; |
1187c9688 ocfs2: Limit inod... |
816 |
(*ac)->ac_max_block = max_block; |
ccd979bdb [PATCH] OCFS2: Th... |
817 818 |
status = -ENOSPC; |
60ca81e82 ocfs2: Allocate i... |
819 820 |
if (!(flags & ALLOC_GROUPS_FROM_GLOBAL) && ocfs2_alloc_should_use_local(osb, bits_wanted)) { |
ccd979bdb [PATCH] OCFS2: Th... |
821 |
status = ocfs2_reserve_local_alloc_bits(osb, |
ccd979bdb [PATCH] OCFS2: Th... |
822 823 |
bits_wanted, *ac); |
1187c9688 ocfs2: Limit inod... |
824 825 826 827 828 |
if (status == -EFBIG) { /* The local alloc window is outside ac_max_block. * use the main bitmap. */ status = -ENOSPC; } else if ((status < 0) && (status != -ENOSPC)) { |
ccd979bdb [PATCH] OCFS2: Th... |
829 830 |
mlog_errno(status); goto bail; |
ccd979bdb [PATCH] OCFS2: Th... |
831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 |
} } if (status == -ENOSPC) { status = ocfs2_reserve_cluster_bitmap_bits(osb, *ac); if (status < 0) { if (status != -ENOSPC) mlog_errno(status); goto bail; } } status = 0; bail: if ((status < 0) && *ac) { ocfs2_free_alloc_context(*ac); *ac = NULL; } mlog_exit(status); return status; } |
1187c9688 ocfs2: Limit inod... |
853 854 855 856 |
int ocfs2_reserve_clusters(struct ocfs2_super *osb, u32 bits_wanted, struct ocfs2_alloc_context **ac) { |
60ca81e82 ocfs2: Allocate i... |
857 858 |
return ocfs2_reserve_clusters_with_limit(osb, bits_wanted, 0, ALLOC_NEW_GROUP, ac); |
1187c9688 ocfs2: Limit inod... |
859 |
} |
ccd979bdb [PATCH] OCFS2: Th... |
860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 |
/* * More or less lifted from ext3. I'll leave their description below: * * "For ext3 allocations, we must not reuse any blocks which are * allocated in the bitmap buffer's "last committed data" copy. This * prevents deletes from freeing up the page for reuse until we have * committed the delete transaction. * * If we didn't do this, then deleting something and reallocating it as * data would allow the old block to be overwritten before the * transaction committed (because we force data to disk before commit). * This would lead to corruption if we crashed between overwriting the * data and committing the delete. * * @@@ We may want to make this allocation behaviour conditional on * data-writes at some point, and disable it for metadata allocations or * sync-data inodes." * * Note: OCFS2 already does this differently for metadata vs data |
c78bad11f fs/: Spelling fixes |
879 |
* allocations, as those bitmaps are separate and undo access is never |
ccd979bdb [PATCH] OCFS2: Th... |
880 881 882 883 884 885 |
* called on a metadata group descriptor. */ static int ocfs2_test_bg_bit_allocatable(struct buffer_head *bg_bh, int nr) { struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data; |
94e41ecfe ocfs2: Pin journa... |
886 |
int ret; |
ccd979bdb [PATCH] OCFS2: Th... |
887 888 889 |
if (ocfs2_test_bit(nr, (unsigned long *)bg->bg_bitmap)) return 0; |
94e41ecfe ocfs2: Pin journa... |
890 891 |
if (!buffer_jbd(bg_bh)) |
ccd979bdb [PATCH] OCFS2: Th... |
892 |
return 1; |
94e41ecfe ocfs2: Pin journa... |
893 |
jbd_lock_bh_state(bg_bh); |
ccd979bdb [PATCH] OCFS2: Th... |
894 |
bg = (struct ocfs2_group_desc *) bh2jh(bg_bh)->b_committed_data; |
94e41ecfe ocfs2: Pin journa... |
895 896 897 898 899 900 901 |
if (bg) ret = !ocfs2_test_bit(nr, (unsigned long *)bg->bg_bitmap); else ret = 1; jbd_unlock_bh_state(bg_bh); return ret; |
ccd979bdb [PATCH] OCFS2: Th... |
902 903 904 905 906 |
} static int ocfs2_block_group_find_clear_bits(struct ocfs2_super *osb, struct buffer_head *bg_bh, unsigned int bits_wanted, |
7bf72edee ocfs2: better gro... |
907 |
unsigned int total_bits, |
ccd979bdb [PATCH] OCFS2: Th... |
908 909 910 911 912 913 914 |
u16 *bit_off, u16 *bits_found) { void *bitmap; u16 best_offset, best_size; int offset, start, found, status = 0; struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data; |
420353061 ocfs2: Morph the ... |
915 916 917 |
/* Callers got this descriptor from * ocfs2_read_group_descriptor(). Any corruption is a code bug. */ BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg)); |
ccd979bdb [PATCH] OCFS2: Th... |
918 919 920 |
found = start = best_offset = best_size = 0; bitmap = bg->bg_bitmap; |
7bf72edee ocfs2: better gro... |
921 922 |
while((offset = ocfs2_find_next_zero_bit(bitmap, total_bits, start)) != -1) { if (offset == total_bits) |
ccd979bdb [PATCH] OCFS2: Th... |
923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 |
break; if (!ocfs2_test_bg_bit_allocatable(bg_bh, offset)) { /* We found a zero, but we can't use it as it * hasn't been put to disk yet! */ found = 0; start = offset + 1; } else if (offset == start) { /* we found a zero */ found++; /* move start to the next bit to test */ start++; } else { /* got a zero after some ones */ found = 1; start = offset + 1; } if (found > best_size) { best_size = found; best_offset = start - found; } /* we got everything we needed */ if (found == bits_wanted) { /* mlog(0, "Found it all! "); */ break; } } /* XXX: I think the first clause is equivalent to the second * - jlbec */ if (found == bits_wanted) { *bit_off = start - found; *bits_found = found; } else if (best_size) { *bit_off = best_offset; *bits_found = best_size; } else { status = -ENOSPC; /* No error log here -- see the comment above * ocfs2_test_bg_bit_allocatable */ } return status; } |
1fabe1481 ocfs2: Remove str... |
968 |
static inline int ocfs2_block_group_set_bits(handle_t *handle, |
ccd979bdb [PATCH] OCFS2: Th... |
969 970 971 972 973 974 975 976 977 978 979 |
struct inode *alloc_inode, struct ocfs2_group_desc *bg, struct buffer_head *group_bh, unsigned int bit_off, unsigned int num_bits) { int status; void *bitmap = bg->bg_bitmap; int journal_type = OCFS2_JOURNAL_ACCESS_WRITE; mlog_entry_void(); |
420353061 ocfs2: Morph the ... |
980 981 982 |
/* All callers get the descriptor via * ocfs2_read_group_descriptor(). Any corruption is a code bug. */ BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg)); |
ccd979bdb [PATCH] OCFS2: Th... |
983 984 985 986 987 988 989 990 |
BUG_ON(le16_to_cpu(bg->bg_free_bits_count) < num_bits); mlog(0, "block_group_set_bits: off = %u, num = %u ", bit_off, num_bits); if (ocfs2_is_cluster_bitmap(alloc_inode)) journal_type = OCFS2_JOURNAL_ACCESS_UNDO; |
13723d00e ocfs2: Use metada... |
991 992 993 994 |
status = ocfs2_journal_access_gd(handle, alloc_inode, group_bh, journal_type); |
ccd979bdb [PATCH] OCFS2: Th... |
995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 |
if (status < 0) { mlog_errno(status); goto bail; } le16_add_cpu(&bg->bg_free_bits_count, -num_bits); while(num_bits--) ocfs2_set_bit(bit_off++, bitmap); status = ocfs2_journal_dirty(handle, group_bh); if (status < 0) { mlog_errno(status); goto bail; } bail: mlog_exit(status); return status; } /* find the one with the most empty bits */ static inline u16 ocfs2_find_victim_chain(struct ocfs2_chain_list *cl) { u16 curr, best; BUG_ON(!cl->cl_next_free_rec); best = curr = 0; while (curr < le16_to_cpu(cl->cl_next_free_rec)) { if (le32_to_cpu(cl->cl_recs[curr].c_free) > le32_to_cpu(cl->cl_recs[best].c_free)) best = curr; curr++; } BUG_ON(best >= le16_to_cpu(cl->cl_next_free_rec)); return best; } |
1fabe1481 ocfs2: Remove str... |
1035 |
static int ocfs2_relink_block_group(handle_t *handle, |
ccd979bdb [PATCH] OCFS2: Th... |
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 |
struct inode *alloc_inode, struct buffer_head *fe_bh, struct buffer_head *bg_bh, struct buffer_head *prev_bg_bh, u16 chain) { int status; /* there is a really tiny chance the journal calls could fail, * but we wouldn't want inconsistent blocks in *any* case. */ u64 fe_ptr, bg_ptr, prev_bg_ptr; struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data; struct ocfs2_group_desc *prev_bg = (struct ocfs2_group_desc *) prev_bg_bh->b_data; |
420353061 ocfs2: Morph the ... |
1049 1050 1051 1052 |
/* The caller got these descriptors from * ocfs2_read_group_descriptor(). Any corruption is a code bug. */ BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg)); BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(prev_bg)); |
ccd979bdb [PATCH] OCFS2: Th... |
1053 |
|
b0697053f ocfs2: don't use ... |
1054 1055 |
mlog(0, "Suballoc %llu, chain %u, move group %llu to top, prev = %llu ", |
1ca1a111b ocfs2: fix sparse... |
1056 1057 1058 |
(unsigned long long)le64_to_cpu(fe->i_blkno), chain, (unsigned long long)le64_to_cpu(bg->bg_blkno), (unsigned long long)le64_to_cpu(prev_bg->bg_blkno)); |
ccd979bdb [PATCH] OCFS2: Th... |
1059 1060 1061 1062 |
fe_ptr = le64_to_cpu(fe->id2.i_chain.cl_recs[chain].c_blkno); bg_ptr = le64_to_cpu(bg->bg_next_group); prev_bg_ptr = le64_to_cpu(prev_bg->bg_next_group); |
13723d00e ocfs2: Use metada... |
1063 1064 |
status = ocfs2_journal_access_gd(handle, alloc_inode, prev_bg_bh, OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bdb [PATCH] OCFS2: Th... |
1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 |
if (status < 0) { mlog_errno(status); goto out_rollback; } prev_bg->bg_next_group = bg->bg_next_group; status = ocfs2_journal_dirty(handle, prev_bg_bh); if (status < 0) { mlog_errno(status); goto out_rollback; } |
13723d00e ocfs2: Use metada... |
1077 1078 |
status = ocfs2_journal_access_gd(handle, alloc_inode, bg_bh, OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bdb [PATCH] OCFS2: Th... |
1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 |
if (status < 0) { mlog_errno(status); goto out_rollback; } bg->bg_next_group = fe->id2.i_chain.cl_recs[chain].c_blkno; status = ocfs2_journal_dirty(handle, bg_bh); if (status < 0) { mlog_errno(status); goto out_rollback; } |
13723d00e ocfs2: Use metada... |
1091 1092 |
status = ocfs2_journal_access_di(handle, alloc_inode, fe_bh, OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bdb [PATCH] OCFS2: Th... |
1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 |
if (status < 0) { mlog_errno(status); goto out_rollback; } fe->id2.i_chain.cl_recs[chain].c_blkno = bg->bg_blkno; status = ocfs2_journal_dirty(handle, fe_bh); if (status < 0) { mlog_errno(status); goto out_rollback; } status = 0; out_rollback: if (status < 0) { fe->id2.i_chain.cl_recs[chain].c_blkno = cpu_to_le64(fe_ptr); bg->bg_next_group = cpu_to_le64(bg_ptr); prev_bg->bg_next_group = cpu_to_le64(prev_bg_ptr); } |
420353061 ocfs2: Morph the ... |
1113 |
|
ccd979bdb [PATCH] OCFS2: Th... |
1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 |
mlog_exit(status); return status; } static inline int ocfs2_block_group_reasonably_empty(struct ocfs2_group_desc *bg, u32 wanted) { return le16_to_cpu(bg->bg_free_bits_count) > wanted; } /* return 0 on success, -ENOSPC to keep searching and any other < 0 * value on error. */ static int ocfs2_cluster_group_search(struct inode *inode, struct buffer_head *group_bh, u32 bits_wanted, u32 min_bits, |
1187c9688 ocfs2: Limit inod... |
1129 |
u64 max_block, |
ccd979bdb [PATCH] OCFS2: Th... |
1130 1131 1132 1133 |
u16 *bit_off, u16 *bits_found) { int search = -ENOSPC; int ret; |
1187c9688 ocfs2: Limit inod... |
1134 |
u64 blkoff; |
7bf72edee ocfs2: better gro... |
1135 |
struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *) group_bh->b_data; |
9c7af40b2 ocfs2: throttle b... |
1136 |
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
ccd979bdb [PATCH] OCFS2: Th... |
1137 |
u16 tmp_off, tmp_found; |
7bf72edee ocfs2: better gro... |
1138 |
unsigned int max_bits, gd_cluster_off; |
ccd979bdb [PATCH] OCFS2: Th... |
1139 1140 |
BUG_ON(!ocfs2_is_cluster_bitmap(inode)); |
7bf72edee ocfs2: better gro... |
1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 |
if (gd->bg_free_bits_count) { max_bits = le16_to_cpu(gd->bg_bits); /* Tail groups in cluster bitmaps which aren't cpg * aligned are prone to partial extention by a failed * fs resize. If the file system resize never got to * update the dinode cluster count, then we don't want * to trust any clusters past it, regardless of what * the group descriptor says. */ gd_cluster_off = ocfs2_blocks_to_clusters(inode->i_sb, le64_to_cpu(gd->bg_blkno)); if ((gd_cluster_off + max_bits) > OCFS2_I(inode)->ip_clusters) { max_bits = OCFS2_I(inode)->ip_clusters - gd_cluster_off; mlog(0, "Desc %llu, bg_bits %u, clusters %u, use %u ", (unsigned long long)le64_to_cpu(gd->bg_blkno), le16_to_cpu(gd->bg_bits), OCFS2_I(inode)->ip_clusters, max_bits); } |
ccd979bdb [PATCH] OCFS2: Th... |
1161 1162 |
ret = ocfs2_block_group_find_clear_bits(OCFS2_SB(inode->i_sb), group_bh, bits_wanted, |
7bf72edee ocfs2: better gro... |
1163 |
max_bits, |
ccd979bdb [PATCH] OCFS2: Th... |
1164 1165 1166 |
&tmp_off, &tmp_found); if (ret) return ret; |
1187c9688 ocfs2: Limit inod... |
1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 |
if (max_block) { blkoff = ocfs2_clusters_to_blocks(inode->i_sb, gd_cluster_off + tmp_off + tmp_found); mlog(0, "Checking %llu against %llu ", (unsigned long long)blkoff, (unsigned long long)max_block); if (blkoff > max_block) return -ENOSPC; } |
ccd979bdb [PATCH] OCFS2: Th... |
1178 1179 1180 1181 1182 1183 1184 1185 |
/* ocfs2_block_group_find_clear_bits() might * return success, but we still want to return * -ENOSPC unless it found the minimum number * of bits. */ if (min_bits <= tmp_found) { *bit_off = tmp_off; *bits_found = tmp_found; search = 0; /* success */ |
9c7af40b2 ocfs2: throttle b... |
1186 1187 1188 1189 1190 1191 |
} else if (tmp_found) { /* * Don't show bits which we'll be returning * for allocation to the local alloc bitmap. */ ocfs2_local_alloc_seen_free_bits(osb, tmp_found); |
ccd979bdb [PATCH] OCFS2: Th... |
1192 1193 1194 1195 1196 1197 1198 1199 1200 |
} } return search; } static int ocfs2_block_group_search(struct inode *inode, struct buffer_head *group_bh, u32 bits_wanted, u32 min_bits, |
1187c9688 ocfs2: Limit inod... |
1201 |
u64 max_block, |
ccd979bdb [PATCH] OCFS2: Th... |
1202 1203 1204 |
u16 *bit_off, u16 *bits_found) { int ret = -ENOSPC; |
1187c9688 ocfs2: Limit inod... |
1205 |
u64 blkoff; |
ccd979bdb [PATCH] OCFS2: Th... |
1206 1207 1208 1209 |
struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) group_bh->b_data; BUG_ON(min_bits != 1); BUG_ON(ocfs2_is_cluster_bitmap(inode)); |
1187c9688 ocfs2: Limit inod... |
1210 |
if (bg->bg_free_bits_count) { |
ccd979bdb [PATCH] OCFS2: Th... |
1211 1212 |
ret = ocfs2_block_group_find_clear_bits(OCFS2_SB(inode->i_sb), group_bh, bits_wanted, |
7bf72edee ocfs2: better gro... |
1213 |
le16_to_cpu(bg->bg_bits), |
ccd979bdb [PATCH] OCFS2: Th... |
1214 |
bit_off, bits_found); |
1187c9688 ocfs2: Limit inod... |
1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 |
if (!ret && max_block) { blkoff = le64_to_cpu(bg->bg_blkno) + *bit_off + *bits_found; mlog(0, "Checking %llu against %llu ", (unsigned long long)blkoff, (unsigned long long)max_block); if (blkoff > max_block) ret = -ENOSPC; } } |
ccd979bdb [PATCH] OCFS2: Th... |
1226 1227 1228 |
return ret; } |
883d4cae4 ocfs2: allocation... |
1229 |
static int ocfs2_alloc_dinode_update_counts(struct inode *inode, |
1fabe1481 ocfs2: Remove str... |
1230 |
handle_t *handle, |
883d4cae4 ocfs2: allocation... |
1231 1232 1233 1234 1235 1236 1237 1238 |
struct buffer_head *di_bh, u32 num_bits, u16 chain) { int ret; u32 tmp_used; struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; struct ocfs2_chain_list *cl = (struct ocfs2_chain_list *) &di->id2.i_chain; |
13723d00e ocfs2: Use metada... |
1239 1240 |
ret = ocfs2_journal_access_di(handle, inode, di_bh, OCFS2_JOURNAL_ACCESS_WRITE); |
883d4cae4 ocfs2: allocation... |
1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 |
if (ret < 0) { mlog_errno(ret); goto out; } tmp_used = le32_to_cpu(di->id1.bitmap1.i_used); di->id1.bitmap1.i_used = cpu_to_le32(num_bits + tmp_used); le32_add_cpu(&cl->cl_recs[chain].c_free, -num_bits); ret = ocfs2_journal_dirty(handle, di_bh); if (ret < 0) mlog_errno(ret); out: return ret; } static int ocfs2_search_one_group(struct ocfs2_alloc_context *ac, |
1fabe1481 ocfs2: Remove str... |
1259 |
handle_t *handle, |
883d4cae4 ocfs2: allocation... |
1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 |
u32 bits_wanted, u32 min_bits, u16 *bit_off, unsigned int *num_bits, u64 gd_blkno, u16 *bits_left) { int ret; u16 found; struct buffer_head *group_bh = NULL; struct ocfs2_group_desc *gd; |
68f64d471 ocfs2: Wrap group... |
1271 |
struct ocfs2_dinode *di = (struct ocfs2_dinode *)ac->ac_bh->b_data; |
883d4cae4 ocfs2: allocation... |
1272 |
struct inode *alloc_inode = ac->ac_inode; |
883d4cae4 ocfs2: allocation... |
1273 |
|
68f64d471 ocfs2: Wrap group... |
1274 1275 |
ret = ocfs2_read_group_descriptor(alloc_inode, di, gd_blkno, &group_bh); |
883d4cae4 ocfs2: allocation... |
1276 1277 1278 1279 1280 1281 |
if (ret < 0) { mlog_errno(ret); return ret; } gd = (struct ocfs2_group_desc *) group_bh->b_data; |
883d4cae4 ocfs2: allocation... |
1282 |
ret = ac->ac_group_search(alloc_inode, group_bh, bits_wanted, min_bits, |
1187c9688 ocfs2: Limit inod... |
1283 |
ac->ac_max_block, bit_off, &found); |
883d4cae4 ocfs2: allocation... |
1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 |
if (ret < 0) { if (ret != -ENOSPC) mlog_errno(ret); goto out; } *num_bits = found; ret = ocfs2_alloc_dinode_update_counts(alloc_inode, handle, ac->ac_bh, *num_bits, le16_to_cpu(gd->bg_chain)); if (ret < 0) { mlog_errno(ret); goto out; } ret = ocfs2_block_group_set_bits(handle, alloc_inode, gd, group_bh, *bit_off, *num_bits); if (ret < 0) mlog_errno(ret); *bits_left = le16_to_cpu(gd->bg_free_bits_count); out: brelse(group_bh); return ret; } |
ccd979bdb [PATCH] OCFS2: Th... |
1312 |
static int ocfs2_search_chain(struct ocfs2_alloc_context *ac, |
1fabe1481 ocfs2: Remove str... |
1313 |
handle_t *handle, |
ccd979bdb [PATCH] OCFS2: Th... |
1314 1315 1316 1317 |
u32 bits_wanted, u32 min_bits, u16 *bit_off, unsigned int *num_bits, |
883d4cae4 ocfs2: allocation... |
1318 1319 |
u64 *bg_blkno, u16 *bits_left) |
ccd979bdb [PATCH] OCFS2: Th... |
1320 1321 1322 1323 1324 |
{ int status; u16 chain, tmp_bits; u32 tmp_used; u64 next_group; |
ccd979bdb [PATCH] OCFS2: Th... |
1325 1326 1327 1328 1329 1330 1331 1332 |
struct inode *alloc_inode = ac->ac_inode; struct buffer_head *group_bh = NULL; struct buffer_head *prev_group_bh = NULL; struct ocfs2_dinode *fe = (struct ocfs2_dinode *) ac->ac_bh->b_data; struct ocfs2_chain_list *cl = (struct ocfs2_chain_list *) &fe->id2.i_chain; struct ocfs2_group_desc *bg; chain = ac->ac_chain; |
b0697053f ocfs2: don't use ... |
1333 1334 1335 1336 |
mlog(0, "trying to alloc %u bits from chain %u, inode %llu ", bits_wanted, chain, (unsigned long long)OCFS2_I(alloc_inode)->ip_blkno); |
ccd979bdb [PATCH] OCFS2: Th... |
1337 |
|
68f64d471 ocfs2: Wrap group... |
1338 1339 1340 |
status = ocfs2_read_group_descriptor(alloc_inode, fe, le64_to_cpu(cl->cl_recs[chain].c_blkno), &group_bh); |
ccd979bdb [PATCH] OCFS2: Th... |
1341 1342 1343 1344 1345 |
if (status < 0) { mlog_errno(status); goto bail; } bg = (struct ocfs2_group_desc *) group_bh->b_data; |
ccd979bdb [PATCH] OCFS2: Th... |
1346 1347 1348 1349 |
status = -ENOSPC; /* for now, the chain search is a bit simplistic. We just use * the 1st group with any empty bits. */ |
1187c9688 ocfs2: Limit inod... |
1350 1351 1352 1353 |
while ((status = ac->ac_group_search(alloc_inode, group_bh, bits_wanted, min_bits, ac->ac_max_block, bit_off, &tmp_bits)) == -ENOSPC) { |
ccd979bdb [PATCH] OCFS2: Th... |
1354 1355 |
if (!bg->bg_next_group) break; |
a81cb88b6 ocfs2: Don't chec... |
1356 1357 1358 |
brelse(prev_group_bh); prev_group_bh = NULL; |
ccd979bdb [PATCH] OCFS2: Th... |
1359 1360 1361 |
next_group = le64_to_cpu(bg->bg_next_group); prev_group_bh = group_bh; group_bh = NULL; |
68f64d471 ocfs2: Wrap group... |
1362 1363 |
status = ocfs2_read_group_descriptor(alloc_inode, fe, next_group, &group_bh); |
ccd979bdb [PATCH] OCFS2: Th... |
1364 1365 1366 1367 1368 |
if (status < 0) { mlog_errno(status); goto bail; } bg = (struct ocfs2_group_desc *) group_bh->b_data; |
ccd979bdb [PATCH] OCFS2: Th... |
1369 1370 1371 1372 1373 1374 |
} if (status < 0) { if (status != -ENOSPC) mlog_errno(status); goto bail; } |
b0697053f ocfs2: don't use ... |
1375 1376 |
mlog(0, "alloc succeeds: we give %u bits from block group %llu ", |
1ca1a111b ocfs2: fix sparse... |
1377 |
tmp_bits, (unsigned long long)le64_to_cpu(bg->bg_blkno)); |
ccd979bdb [PATCH] OCFS2: Th... |
1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 |
*num_bits = tmp_bits; BUG_ON(*num_bits == 0); /* * Keep track of previous block descriptor read. When * we find a target, if we have read more than X * number of descriptors, and the target is reasonably * empty, relink him to top of his chain. * * We've read 0 extra blocks and only send one more to * the transaction, yet the next guy to search has a * much easier time. * * Do this *after* figuring out how many bits we're taking out * of our target group. */ if (ac->ac_allow_chain_relink && (prev_group_bh) && (ocfs2_block_group_reasonably_empty(bg, *num_bits))) { status = ocfs2_relink_block_group(handle, alloc_inode, ac->ac_bh, group_bh, prev_group_bh, chain); if (status < 0) { mlog_errno(status); goto bail; } } /* Ok, claim our bits now: set the info on dinode, chainlist * and then the group */ |
13723d00e ocfs2: Use metada... |
1410 1411 1412 1413 |
status = ocfs2_journal_access_di(handle, alloc_inode, ac->ac_bh, OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bdb [PATCH] OCFS2: Th... |
1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 |
if (status < 0) { mlog_errno(status); goto bail; } tmp_used = le32_to_cpu(fe->id1.bitmap1.i_used); fe->id1.bitmap1.i_used = cpu_to_le32(*num_bits + tmp_used); le32_add_cpu(&cl->cl_recs[chain].c_free, -(*num_bits)); status = ocfs2_journal_dirty(handle, ac->ac_bh); if (status < 0) { mlog_errno(status); goto bail; } status = ocfs2_block_group_set_bits(handle, alloc_inode, bg, group_bh, *bit_off, *num_bits); if (status < 0) { mlog_errno(status); goto bail; } |
b0697053f ocfs2: don't use ... |
1440 1441 |
mlog(0, "Allocated %u bits from suballocator %llu ", *num_bits, |
1ca1a111b ocfs2: fix sparse... |
1442 |
(unsigned long long)le64_to_cpu(fe->i_blkno)); |
ccd979bdb [PATCH] OCFS2: Th... |
1443 1444 |
*bg_blkno = le64_to_cpu(bg->bg_blkno); |
883d4cae4 ocfs2: allocation... |
1445 |
*bits_left = le16_to_cpu(bg->bg_free_bits_count); |
ccd979bdb [PATCH] OCFS2: Th... |
1446 |
bail: |
a81cb88b6 ocfs2: Don't chec... |
1447 1448 |
brelse(group_bh); brelse(prev_group_bh); |
ccd979bdb [PATCH] OCFS2: Th... |
1449 1450 1451 1452 1453 1454 1455 1456 |
mlog_exit(status); return status; } /* will give out up to bits_wanted contiguous bits. */ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb, struct ocfs2_alloc_context *ac, |
1fabe1481 ocfs2: Remove str... |
1457 |
handle_t *handle, |
ccd979bdb [PATCH] OCFS2: Th... |
1458 1459 1460 1461 1462 1463 1464 1465 |
u32 bits_wanted, u32 min_bits, u16 *bit_off, unsigned int *num_bits, u64 *bg_blkno) { int status; u16 victim, i; |
883d4cae4 ocfs2: allocation... |
1466 1467 |
u16 bits_left = 0; u64 hint_blkno = ac->ac_last_group; |
ccd979bdb [PATCH] OCFS2: Th... |
1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 |
struct ocfs2_chain_list *cl; struct ocfs2_dinode *fe; mlog_entry_void(); BUG_ON(ac->ac_bits_given >= ac->ac_bits_wanted); BUG_ON(bits_wanted > (ac->ac_bits_wanted - ac->ac_bits_given)); BUG_ON(!ac->ac_bh); fe = (struct ocfs2_dinode *) ac->ac_bh->b_data; |
10995aa24 ocfs2: Morph the ... |
1478 1479 1480 1481 |
/* The bh was validated by the inode read during * ocfs2_reserve_suballoc_bits(). Any corruption is a code bug. */ BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); |
ccd979bdb [PATCH] OCFS2: Th... |
1482 1483 |
if (le32_to_cpu(fe->id1.bitmap1.i_used) >= le32_to_cpu(fe->id1.bitmap1.i_total)) { |
b0697053f ocfs2: don't use ... |
1484 1485 1486 |
ocfs2_error(osb->sb, "Chain allocator dinode %llu has %u used " "bits but only %u total.", (unsigned long long)le64_to_cpu(fe->i_blkno), |
ccd979bdb [PATCH] OCFS2: Th... |
1487 1488 1489 1490 1491 |
le32_to_cpu(fe->id1.bitmap1.i_used), le32_to_cpu(fe->id1.bitmap1.i_total)); status = -EIO; goto bail; } |
883d4cae4 ocfs2: allocation... |
1492 1493 1494 1495 1496 |
if (hint_blkno) { /* Attempt to short-circuit the usual search mechanism * by jumping straight to the most recently used * allocation group. This helps us mantain some * contiguousness across allocations. */ |
da5cbf2f9 ocfs2: don't use ... |
1497 1498 |
status = ocfs2_search_one_group(ac, handle, bits_wanted, min_bits, bit_off, num_bits, |
883d4cae4 ocfs2: allocation... |
1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 |
hint_blkno, &bits_left); if (!status) { /* Be careful to update *bg_blkno here as the * caller is expecting it to be filled in, and * ocfs2_search_one_group() won't do that for * us. */ *bg_blkno = hint_blkno; goto set_hint; } if (status < 0 && status != -ENOSPC) { mlog_errno(status); goto bail; } } |
ccd979bdb [PATCH] OCFS2: Th... |
1513 1514 1515 1516 1517 |
cl = (struct ocfs2_chain_list *) &fe->id2.i_chain; victim = ocfs2_find_victim_chain(cl); ac->ac_chain = victim; ac->ac_allow_chain_relink = 1; |
da5cbf2f9 ocfs2: don't use ... |
1518 |
status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits, bit_off, |
883d4cae4 ocfs2: allocation... |
1519 |
num_bits, bg_blkno, &bits_left); |
ccd979bdb [PATCH] OCFS2: Th... |
1520 |
if (!status) |
883d4cae4 ocfs2: allocation... |
1521 |
goto set_hint; |
ccd979bdb [PATCH] OCFS2: Th... |
1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 |
if (status < 0 && status != -ENOSPC) { mlog_errno(status); goto bail; } mlog(0, "Search of victim chain %u came up with nothing, " "trying all chains now. ", victim); /* If we didn't pick a good victim, then just default to * searching each chain in order. Don't allow chain relinking * because we only calculate enough journal credits for one * relink per alloc. */ ac->ac_allow_chain_relink = 0; for (i = 0; i < le16_to_cpu(cl->cl_next_free_rec); i ++) { if (i == victim) continue; if (!cl->cl_recs[i].c_free) continue; ac->ac_chain = i; |
da5cbf2f9 ocfs2: don't use ... |
1543 |
status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits, |
883d4cae4 ocfs2: allocation... |
1544 1545 |
bit_off, num_bits, bg_blkno, &bits_left); |
ccd979bdb [PATCH] OCFS2: Th... |
1546 1547 1548 1549 1550 1551 1552 |
if (!status) break; if (status < 0 && status != -ENOSPC) { mlog_errno(status); goto bail; } } |
ccd979bdb [PATCH] OCFS2: Th... |
1553 |
|
883d4cae4 ocfs2: allocation... |
1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 |
set_hint: if (status != -ENOSPC) { /* If the next search of this group is not likely to * yield a suitable extent, then we reset the last * group hint so as to not waste a disk read */ if (bits_left < min_bits) ac->ac_last_group = 0; else ac->ac_last_group = *bg_blkno; } bail: |
ccd979bdb [PATCH] OCFS2: Th... |
1566 1567 1568 1569 1570 |
mlog_exit(status); return status; } int ocfs2_claim_metadata(struct ocfs2_super *osb, |
1fabe1481 ocfs2: Remove str... |
1571 |
handle_t *handle, |
ccd979bdb [PATCH] OCFS2: Th... |
1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 |
struct ocfs2_alloc_context *ac, u32 bits_wanted, u16 *suballoc_bit_start, unsigned int *num_bits, u64 *blkno_start) { int status; u64 bg_blkno; BUG_ON(!ac); BUG_ON(ac->ac_bits_wanted < (ac->ac_bits_given + bits_wanted)); BUG_ON(ac->ac_which != OCFS2_AC_USE_META); |
ccd979bdb [PATCH] OCFS2: Th... |
1584 1585 1586 |
status = ocfs2_claim_suballoc_bits(osb, ac, |
da5cbf2f9 ocfs2: don't use ... |
1587 |
handle, |
ccd979bdb [PATCH] OCFS2: Th... |
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 |
bits_wanted, 1, suballoc_bit_start, num_bits, &bg_blkno); if (status < 0) { mlog_errno(status); goto bail; } atomic_inc(&osb->alloc_stats.bg_allocs); *blkno_start = bg_blkno + (u64) *suballoc_bit_start; ac->ac_bits_given += (*num_bits); status = 0; bail: mlog_exit(status); return status; } |
138211515 ocfs2: Optimize i... |
1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 |
static void ocfs2_init_inode_ac_group(struct inode *dir, struct buffer_head *parent_fe_bh, struct ocfs2_alloc_context *ac) { struct ocfs2_dinode *fe = (struct ocfs2_dinode *)parent_fe_bh->b_data; /* * Try to allocate inodes from some specific group. * * If the parent dir has recorded the last group used in allocation, * cool, use it. Otherwise if we try to allocate new inode from the * same slot the parent dir belongs to, use the same chunk. * * We are very careful here to avoid the mistake of setting * ac_last_group to a group descriptor from a different (unlocked) slot. */ if (OCFS2_I(dir)->ip_last_used_group && OCFS2_I(dir)->ip_last_used_slot == ac->ac_alloc_slot) ac->ac_last_group = OCFS2_I(dir)->ip_last_used_group; else if (le16_to_cpu(fe->i_suballoc_slot) == ac->ac_alloc_slot) ac->ac_last_group = ocfs2_which_suballoc_group( le64_to_cpu(fe->i_blkno), le16_to_cpu(fe->i_suballoc_bit)); } static inline void ocfs2_save_inode_ac_group(struct inode *dir, struct ocfs2_alloc_context *ac) { OCFS2_I(dir)->ip_last_used_group = ac->ac_last_group; OCFS2_I(dir)->ip_last_used_slot = ac->ac_alloc_slot; } |
ccd979bdb [PATCH] OCFS2: Th... |
1636 |
int ocfs2_claim_new_inode(struct ocfs2_super *osb, |
1fabe1481 ocfs2: Remove str... |
1637 |
handle_t *handle, |
138211515 ocfs2: Optimize i... |
1638 1639 |
struct inode *dir, struct buffer_head *parent_fe_bh, |
ccd979bdb [PATCH] OCFS2: Th... |
1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 |
struct ocfs2_alloc_context *ac, u16 *suballoc_bit, u64 *fe_blkno) { int status; unsigned int num_bits; u64 bg_blkno; mlog_entry_void(); BUG_ON(!ac); BUG_ON(ac->ac_bits_given != 0); BUG_ON(ac->ac_bits_wanted != 1); BUG_ON(ac->ac_which != OCFS2_AC_USE_INODE); |
ccd979bdb [PATCH] OCFS2: Th... |
1654 |
|
138211515 ocfs2: Optimize i... |
1655 |
ocfs2_init_inode_ac_group(dir, parent_fe_bh, ac); |
ccd979bdb [PATCH] OCFS2: Th... |
1656 1657 |
status = ocfs2_claim_suballoc_bits(osb, ac, |
da5cbf2f9 ocfs2: don't use ... |
1658 |
handle, |
ccd979bdb [PATCH] OCFS2: Th... |
1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 |
1, 1, suballoc_bit, &num_bits, &bg_blkno); if (status < 0) { mlog_errno(status); goto bail; } atomic_inc(&osb->alloc_stats.bg_allocs); BUG_ON(num_bits != 1); *fe_blkno = bg_blkno + (u64) (*suballoc_bit); ac->ac_bits_given++; |
138211515 ocfs2: Optimize i... |
1674 |
ocfs2_save_inode_ac_group(dir, ac); |
ccd979bdb [PATCH] OCFS2: Th... |
1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 |
status = 0; bail: mlog_exit(status); return status; } /* translate a group desc. blkno and it's bitmap offset into * disk cluster offset. */ static inline u32 ocfs2_desc_bitmap_to_cluster_off(struct inode *inode, u64 bg_blkno, u16 bg_bit_off) { struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); u32 cluster = 0; BUG_ON(!ocfs2_is_cluster_bitmap(inode)); if (bg_blkno != osb->first_cluster_group_blkno) cluster = ocfs2_blocks_to_clusters(inode->i_sb, bg_blkno); cluster += (u32) bg_bit_off; return cluster; } /* given a cluster offset, calculate which block group it belongs to * and return that block offset. */ |
d659072f7 [PATCH 1/2] ocfs2... |
1700 |
u64 ocfs2_which_cluster_group(struct inode *inode, u32 cluster) |
ccd979bdb [PATCH] OCFS2: Th... |
1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 |
{ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); u32 group_no; BUG_ON(!ocfs2_is_cluster_bitmap(inode)); group_no = cluster / osb->bitmap_cpg; if (!group_no) return osb->first_cluster_group_blkno; return ocfs2_clusters_to_blocks(inode->i_sb, group_no * osb->bitmap_cpg); } /* given the block number of a cluster start, calculate which cluster * group and descriptor bitmap offset that corresponds to. */ static inline void ocfs2_block_to_cluster_group(struct inode *inode, u64 data_blkno, u64 *bg_blkno, u16 *bg_bit_off) { struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); u32 data_cluster = ocfs2_blocks_to_clusters(osb->sb, data_blkno); BUG_ON(!ocfs2_is_cluster_bitmap(inode)); *bg_blkno = ocfs2_which_cluster_group(inode, data_cluster); if (*bg_blkno == osb->first_cluster_group_blkno) *bg_bit_off = (u16) data_cluster; else *bg_bit_off = (u16) ocfs2_blocks_to_clusters(osb->sb, data_blkno - *bg_blkno); } /* * min_bits - minimum contiguous chunk from this total allocation we * can handle. set to what we asked for originally for a full * contig. allocation, set to '1' to indicate we can deal with extents * of any size. */ |
415cb8003 ocfs2: Allow smal... |
1742 1743 1744 1745 1746 1747 1748 |
int __ocfs2_claim_clusters(struct ocfs2_super *osb, handle_t *handle, struct ocfs2_alloc_context *ac, u32 min_clusters, u32 max_clusters, u32 *cluster_start, u32 *num_clusters) |
ccd979bdb [PATCH] OCFS2: Th... |
1749 1750 |
{ int status; |
415cb8003 ocfs2: Allow smal... |
1751 |
unsigned int bits_wanted = max_clusters; |
883d4cae4 ocfs2: allocation... |
1752 |
u64 bg_blkno = 0; |
ccd979bdb [PATCH] OCFS2: Th... |
1753 1754 1755 |
u16 bg_bit_off; mlog_entry_void(); |
ccd979bdb [PATCH] OCFS2: Th... |
1756 1757 1758 1759 |
BUG_ON(ac->ac_bits_given >= ac->ac_bits_wanted); BUG_ON(ac->ac_which != OCFS2_AC_USE_LOCAL && ac->ac_which != OCFS2_AC_USE_MAIN); |
ccd979bdb [PATCH] OCFS2: Th... |
1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 |
if (ac->ac_which == OCFS2_AC_USE_LOCAL) { status = ocfs2_claim_local_alloc_bits(osb, handle, ac, bits_wanted, cluster_start, num_clusters); if (!status) atomic_inc(&osb->alloc_stats.local_data); } else { if (min_clusters > (osb->bitmap_cpg - 1)) { /* The only paths asking for contiguousness * should know about this already. */ |
2fbe8d1eb ocfs2: Local allo... |
1774 1775 1776 1777 |
mlog(ML_ERROR, "minimum allocation requested %u exceeds " "group bitmap size %u! ", min_clusters, osb->bitmap_cpg); |
ccd979bdb [PATCH] OCFS2: Th... |
1778 1779 1780 1781 1782 1783 1784 1785 1786 |
status = -ENOSPC; goto bail; } /* clamp the current request down to a realistic size. */ if (bits_wanted > (osb->bitmap_cpg - 1)) bits_wanted = osb->bitmap_cpg - 1; status = ocfs2_claim_suballoc_bits(osb, ac, |
da5cbf2f9 ocfs2: don't use ... |
1787 |
handle, |
ccd979bdb [PATCH] OCFS2: Th... |
1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 |
bits_wanted, min_clusters, &bg_bit_off, num_clusters, &bg_blkno); if (!status) { *cluster_start = ocfs2_desc_bitmap_to_cluster_off(ac->ac_inode, bg_blkno, bg_bit_off); atomic_inc(&osb->alloc_stats.bitmap_data); } } if (status < 0) { if (status != -ENOSPC) mlog_errno(status); goto bail; } ac->ac_bits_given += *num_clusters; bail: mlog_exit(status); return status; } |
415cb8003 ocfs2: Allow smal... |
1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 |
int ocfs2_claim_clusters(struct ocfs2_super *osb, handle_t *handle, struct ocfs2_alloc_context *ac, u32 min_clusters, u32 *cluster_start, u32 *num_clusters) { unsigned int bits_wanted = ac->ac_bits_wanted - ac->ac_bits_given; return __ocfs2_claim_clusters(osb, handle, ac, min_clusters, bits_wanted, cluster_start, num_clusters); } |
1fabe1481 ocfs2: Remove str... |
1825 |
static inline int ocfs2_block_group_clear_bits(handle_t *handle, |
ccd979bdb [PATCH] OCFS2: Th... |
1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 |
struct inode *alloc_inode, struct ocfs2_group_desc *bg, struct buffer_head *group_bh, unsigned int bit_off, unsigned int num_bits) { int status; unsigned int tmp; int journal_type = OCFS2_JOURNAL_ACCESS_WRITE; struct ocfs2_group_desc *undo_bg = NULL; |
94e41ecfe ocfs2: Pin journa... |
1836 |
int cluster_bitmap = 0; |
ccd979bdb [PATCH] OCFS2: Th... |
1837 1838 |
mlog_entry_void(); |
420353061 ocfs2: Morph the ... |
1839 1840 1841 |
/* The caller got this descriptor from * ocfs2_read_group_descriptor(). Any corruption is a code bug. */ BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg)); |
ccd979bdb [PATCH] OCFS2: Th... |
1842 1843 1844 1845 1846 1847 |
mlog(0, "off = %u, num = %u ", bit_off, num_bits); if (ocfs2_is_cluster_bitmap(alloc_inode)) journal_type = OCFS2_JOURNAL_ACCESS_UNDO; |
13723d00e ocfs2: Use metada... |
1848 1849 |
status = ocfs2_journal_access_gd(handle, alloc_inode, group_bh, journal_type); |
ccd979bdb [PATCH] OCFS2: Th... |
1850 1851 1852 1853 1854 1855 |
if (status < 0) { mlog_errno(status); goto bail; } if (ocfs2_is_cluster_bitmap(alloc_inode)) |
94e41ecfe ocfs2: Pin journa... |
1856 1857 1858 1859 1860 1861 1862 1863 |
cluster_bitmap = 1; if (cluster_bitmap) { jbd_lock_bh_state(group_bh); undo_bg = (struct ocfs2_group_desc *) bh2jh(group_bh)->b_committed_data; BUG_ON(!undo_bg); } |
ccd979bdb [PATCH] OCFS2: Th... |
1864 1865 1866 1867 1868 |
tmp = num_bits; while(tmp--) { ocfs2_clear_bit((bit_off + tmp), (unsigned long *) bg->bg_bitmap); |
94e41ecfe ocfs2: Pin journa... |
1869 |
if (cluster_bitmap) |
ccd979bdb [PATCH] OCFS2: Th... |
1870 1871 1872 1873 |
ocfs2_set_bit(bit_off + tmp, (unsigned long *) undo_bg->bg_bitmap); } le16_add_cpu(&bg->bg_free_bits_count, num_bits); |
94e41ecfe ocfs2: Pin journa... |
1874 1875 |
if (cluster_bitmap) jbd_unlock_bh_state(group_bh); |
ccd979bdb [PATCH] OCFS2: Th... |
1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 |
status = ocfs2_journal_dirty(handle, group_bh); if (status < 0) mlog_errno(status); bail: return status; } /* * expects the suballoc inode to already be locked. */ |
2b604351b ocfs2: simplify d... |
1886 1887 1888 1889 1890 1891 |
int ocfs2_free_suballoc_bits(handle_t *handle, struct inode *alloc_inode, struct buffer_head *alloc_bh, unsigned int start_bit, u64 bg_blkno, unsigned int count) |
ccd979bdb [PATCH] OCFS2: Th... |
1892 1893 1894 |
{ int status = 0; u32 tmp_used; |
ccd979bdb [PATCH] OCFS2: Th... |
1895 1896 1897 1898 1899 1900 |
struct ocfs2_dinode *fe = (struct ocfs2_dinode *) alloc_bh->b_data; struct ocfs2_chain_list *cl = &fe->id2.i_chain; struct buffer_head *group_bh = NULL; struct ocfs2_group_desc *group; mlog_entry_void(); |
10995aa24 ocfs2: Morph the ... |
1901 1902 1903 1904 1905 1906 |
/* The alloc_bh comes from ocfs2_free_dinode() or * ocfs2_free_clusters(). The callers have all locked the * allocator and gotten alloc_bh from the lock call. This * validates the dinode buffer. Any corruption that has happended * is a code bug. */ BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); |
ccd979bdb [PATCH] OCFS2: Th... |
1907 |
BUG_ON((count + start_bit) > ocfs2_bits_per_group(cl)); |
b0697053f ocfs2: don't use ... |
1908 1909 1910 1911 |
mlog(0, "%llu: freeing %u bits from group %llu, starting at %u ", (unsigned long long)OCFS2_I(alloc_inode)->ip_blkno, count, (unsigned long long)bg_blkno, start_bit); |
ccd979bdb [PATCH] OCFS2: Th... |
1912 |
|
68f64d471 ocfs2: Wrap group... |
1913 1914 |
status = ocfs2_read_group_descriptor(alloc_inode, fe, bg_blkno, &group_bh); |
ccd979bdb [PATCH] OCFS2: Th... |
1915 1916 1917 1918 |
if (status < 0) { mlog_errno(status); goto bail; } |
ccd979bdb [PATCH] OCFS2: Th... |
1919 |
group = (struct ocfs2_group_desc *) group_bh->b_data; |
68f64d471 ocfs2: Wrap group... |
1920 |
|
ccd979bdb [PATCH] OCFS2: Th... |
1921 1922 1923 1924 1925 1926 1927 1928 1929 |
BUG_ON((count + start_bit) > le16_to_cpu(group->bg_bits)); status = ocfs2_block_group_clear_bits(handle, alloc_inode, group, group_bh, start_bit, count); if (status < 0) { mlog_errno(status); goto bail; } |
13723d00e ocfs2: Use metada... |
1930 1931 |
status = ocfs2_journal_access_di(handle, alloc_inode, alloc_bh, OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bdb [PATCH] OCFS2: Th... |
1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 |
if (status < 0) { mlog_errno(status); goto bail; } le32_add_cpu(&cl->cl_recs[le16_to_cpu(group->bg_chain)].c_free, count); tmp_used = le32_to_cpu(fe->id1.bitmap1.i_used); fe->id1.bitmap1.i_used = cpu_to_le32(tmp_used - count); status = ocfs2_journal_dirty(handle, alloc_bh); if (status < 0) { mlog_errno(status); goto bail; } bail: |
a81cb88b6 ocfs2: Don't chec... |
1949 |
brelse(group_bh); |
ccd979bdb [PATCH] OCFS2: Th... |
1950 1951 1952 1953 |
mlog_exit(status); return status; } |
1fabe1481 ocfs2: Remove str... |
1954 |
int ocfs2_free_dinode(handle_t *handle, |
ccd979bdb [PATCH] OCFS2: Th... |
1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 |
struct inode *inode_alloc_inode, struct buffer_head *inode_alloc_bh, struct ocfs2_dinode *di) { u64 blk = le64_to_cpu(di->i_blkno); u16 bit = le16_to_cpu(di->i_suballoc_bit); u64 bg_blkno = ocfs2_which_suballoc_group(blk, bit); return ocfs2_free_suballoc_bits(handle, inode_alloc_inode, inode_alloc_bh, bit, bg_blkno, 1); } |
1fabe1481 ocfs2: Remove str... |
1966 |
int ocfs2_free_clusters(handle_t *handle, |
ccd979bdb [PATCH] OCFS2: Th... |
1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 |
struct inode *bitmap_inode, struct buffer_head *bitmap_bh, u64 start_blk, unsigned int num_clusters) { int status; u16 bg_start_bit; u64 bg_blkno; struct ocfs2_dinode *fe; /* You can't ever have a contiguous set of clusters * bigger than a block group bitmap so we never have to worry * about looping on them. */ mlog_entry_void(); /* This is expensive. We can safely remove once this stuff has * gotten tested really well. */ BUG_ON(start_blk != ocfs2_clusters_to_blocks(bitmap_inode->i_sb, ocfs2_blocks_to_clusters(bitmap_inode->i_sb, start_blk))); fe = (struct ocfs2_dinode *) bitmap_bh->b_data; ocfs2_block_to_cluster_group(bitmap_inode, start_blk, &bg_blkno, &bg_start_bit); |
b0697053f ocfs2: don't use ... |
1991 1992 1993 1994 1995 1996 |
mlog(0, "want to free %u clusters starting at block %llu ", num_clusters, (unsigned long long)start_blk); mlog(0, "bg_blkno = %llu, bg_start_bit = %u ", (unsigned long long)bg_blkno, bg_start_bit); |
ccd979bdb [PATCH] OCFS2: Th... |
1997 1998 1999 2000 |
status = ocfs2_free_suballoc_bits(handle, bitmap_inode, bitmap_bh, bg_start_bit, bg_blkno, num_clusters); |
9c7af40b2 ocfs2: throttle b... |
2001 |
if (status < 0) { |
ccd979bdb [PATCH] OCFS2: Th... |
2002 |
mlog_errno(status); |
9c7af40b2 ocfs2: throttle b... |
2003 2004 2005 2006 2007 |
goto out; } ocfs2_local_alloc_seen_free_bits(OCFS2_SB(bitmap_inode->i_sb), num_clusters); |
ccd979bdb [PATCH] OCFS2: Th... |
2008 |
|
9c7af40b2 ocfs2: throttle b... |
2009 |
out: |
ccd979bdb [PATCH] OCFS2: Th... |
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 |
mlog_exit(status); return status; } static inline void ocfs2_debug_bg(struct ocfs2_group_desc *bg) { printk("Block Group: "); printk("bg_signature: %s ", bg->bg_signature); printk("bg_size: %u ", bg->bg_size); printk("bg_bits: %u ", bg->bg_bits); printk("bg_free_bits_count: %u ", bg->bg_free_bits_count); printk("bg_chain: %u ", bg->bg_chain); printk("bg_generation: %u ", le32_to_cpu(bg->bg_generation)); |
b0697053f ocfs2: don't use ... |
2030 2031 2032 2033 2034 2035 2036 2037 2038 |
printk("bg_next_group: %llu ", (unsigned long long)bg->bg_next_group); printk("bg_parent_dinode: %llu ", (unsigned long long)bg->bg_parent_dinode); printk("bg_blkno: %llu ", (unsigned long long)bg->bg_blkno); |
ccd979bdb [PATCH] OCFS2: Th... |
2039 2040 2041 2042 2043 |
} static inline void ocfs2_debug_suballoc_inode(struct ocfs2_dinode *fe) { int i; |
b0697053f ocfs2: don't use ... |
2044 2045 |
printk("Suballoc Inode %llu: ", (unsigned long long)fe->i_blkno); |
ccd979bdb [PATCH] OCFS2: Th... |
2046 2047 |
printk("i_signature: %s ", fe->i_signature); |
b0697053f ocfs2: don't use ... |
2048 2049 2050 |
printk("i_size: %llu ", (unsigned long long)fe->i_size); |
ccd979bdb [PATCH] OCFS2: Th... |
2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 |
printk("i_clusters: %u ", fe->i_clusters); printk("i_generation: %u ", le32_to_cpu(fe->i_generation)); printk("id1.bitmap1.i_used: %u ", le32_to_cpu(fe->id1.bitmap1.i_used)); printk("id1.bitmap1.i_total: %u ", le32_to_cpu(fe->id1.bitmap1.i_total)); printk("id2.i_chain.cl_cpg: %u ", fe->id2.i_chain.cl_cpg); printk("id2.i_chain.cl_bpc: %u ", fe->id2.i_chain.cl_bpc); printk("id2.i_chain.cl_count: %u ", fe->id2.i_chain.cl_count); printk("id2.i_chain.cl_next_free_rec: %u ", fe->id2.i_chain.cl_next_free_rec); for(i = 0; i < fe->id2.i_chain.cl_next_free_rec; i++) { printk("fe->id2.i_chain.cl_recs[%d].c_free: %u ", i, fe->id2.i_chain.cl_recs[i].c_free); printk("fe->id2.i_chain.cl_recs[%d].c_total: %u ", i, fe->id2.i_chain.cl_recs[i].c_total); |
b0697053f ocfs2: don't use ... |
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printk("fe->id2.i_chain.cl_recs[%d].c_blkno: %llu ", i, (unsigned long long)fe->id2.i_chain.cl_recs[i].c_blkno); |
ccd979bdb [PATCH] OCFS2: Th... |
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} } |
e7d4cb6bc ocfs2: Abstract o... |
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/* * For a given allocation, determine which allocators will need to be * accessed, and lock them, reserving the appropriate number of bits. * * Sparse file systems call this from ocfs2_write_begin_nolock() * and ocfs2_allocate_unwritten_extents(). * * File systems which don't support holes call this from * ocfs2_extend_allocation(). */ |
f99b9b7cc ocfs2: Make ocfs2... |
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int ocfs2_lock_allocators(struct inode *inode, struct ocfs2_extent_tree *et, |
e7d4cb6bc ocfs2: Abstract o... |
2096 2097 |
u32 clusters_to_add, u32 extents_to_split, struct ocfs2_alloc_context **data_ac, |
f99b9b7cc ocfs2: Make ocfs2... |
2098 |
struct ocfs2_alloc_context **meta_ac) |
e7d4cb6bc ocfs2: Abstract o... |
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{ int ret = 0, num_free_extents; unsigned int max_recs_needed = clusters_to_add + 2 * extents_to_split; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); *meta_ac = NULL; if (data_ac) *data_ac = NULL; BUG_ON(clusters_to_add != 0 && data_ac == NULL); |
f99b9b7cc ocfs2: Make ocfs2... |
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num_free_extents = ocfs2_num_free_extents(osb, inode, et); |
e7d4cb6bc ocfs2: Abstract o... |
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if (num_free_extents < 0) { ret = num_free_extents; mlog_errno(ret); goto out; } /* * Sparse allocation file systems need to be more conservative * with reserving room for expansion - the actual allocation * happens while we've got a journal handle open so re-taking * a cluster lock (because we ran out of room for another * extent) will violate ordering rules. * * Most of the time we'll only be seeing this 1 cluster at a time * anyway. * * Always lock for any unwritten extents - we might want to * add blocks during a split. */ if (!num_free_extents || (ocfs2_sparse_alloc(osb) && num_free_extents < max_recs_needed)) { |
f99b9b7cc ocfs2: Make ocfs2... |
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ret = ocfs2_reserve_new_metadata(osb, et->et_root_el, meta_ac); |
e7d4cb6bc ocfs2: Abstract o... |
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if (ret < 0) { if (ret != -ENOSPC) mlog_errno(ret); goto out; } } if (clusters_to_add == 0) goto out; ret = ocfs2_reserve_clusters(osb, clusters_to_add, data_ac); if (ret < 0) { if (ret != -ENOSPC) mlog_errno(ret); goto out; } out: if (ret) { if (*meta_ac) { ocfs2_free_alloc_context(*meta_ac); *meta_ac = NULL; } /* * We cannot have an error and a non null *data_ac. */ } return ret; } |
6ca497a83 ocfs2: fix rare s... |
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/* * Read the inode specified by blkno to get suballoc_slot and * suballoc_bit. */ static int ocfs2_get_suballoc_slot_bit(struct ocfs2_super *osb, u64 blkno, u16 *suballoc_slot, u16 *suballoc_bit) { int status; struct buffer_head *inode_bh = NULL; struct ocfs2_dinode *inode_fe; |
5b09b507d ocfs2: Fix some p... |
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mlog_entry("blkno: %llu ", (unsigned long long)blkno); |
6ca497a83 ocfs2: fix rare s... |
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/* dirty read disk */ status = ocfs2_read_blocks_sync(osb, blkno, 1, &inode_bh); if (status < 0) { |
5b09b507d ocfs2: Fix some p... |
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mlog(ML_ERROR, "read block %llu failed %d ", (unsigned long long)blkno, status); |
6ca497a83 ocfs2: fix rare s... |
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goto bail; } inode_fe = (struct ocfs2_dinode *) inode_bh->b_data; if (!OCFS2_IS_VALID_DINODE(inode_fe)) { |
5b09b507d ocfs2: Fix some p... |
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mlog(ML_ERROR, "invalid inode %llu requested ", (unsigned long long)blkno); |
6ca497a83 ocfs2: fix rare s... |
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status = -EINVAL; goto bail; } |
0fba81374 ocfs2: Fix 2 warn... |
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if (le16_to_cpu(inode_fe->i_suballoc_slot) != (u16)OCFS2_INVALID_SLOT && |
6ca497a83 ocfs2: fix rare s... |
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(u32)le16_to_cpu(inode_fe->i_suballoc_slot) > osb->max_slots - 1) { mlog(ML_ERROR, "inode %llu has invalid suballoc slot %u ", |
5b09b507d ocfs2: Fix some p... |
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(unsigned long long)blkno, (u32)le16_to_cpu(inode_fe->i_suballoc_slot)); |
6ca497a83 ocfs2: fix rare s... |
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status = -EINVAL; goto bail; } if (suballoc_slot) *suballoc_slot = le16_to_cpu(inode_fe->i_suballoc_slot); if (suballoc_bit) *suballoc_bit = le16_to_cpu(inode_fe->i_suballoc_bit); bail: brelse(inode_bh); mlog_exit(status); return status; } /* * test whether bit is SET in allocator bitmap or not. on success, 0 * is returned and *res is 1 for SET; 0 otherwise. when fails, errno * is returned and *res is meaningless. Call this after you have * cluster locked against suballoc, or you may get a result based on * non-up2date contents */ static int ocfs2_test_suballoc_bit(struct ocfs2_super *osb, struct inode *suballoc, struct buffer_head *alloc_bh, u64 blkno, u16 bit, int *res) { struct ocfs2_dinode *alloc_fe; struct ocfs2_group_desc *group; struct buffer_head *group_bh = NULL; u64 bg_blkno; int status; |
5b09b507d ocfs2: Fix some p... |
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mlog_entry("blkno: %llu bit: %u ", (unsigned long long)blkno, (unsigned int)bit); |
6ca497a83 ocfs2: fix rare s... |
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alloc_fe = (struct ocfs2_dinode *)alloc_bh->b_data; if ((bit + 1) > ocfs2_bits_per_group(&alloc_fe->id2.i_chain)) { mlog(ML_ERROR, "suballoc bit %u out of range of %u ", (unsigned int)bit, ocfs2_bits_per_group(&alloc_fe->id2.i_chain)); status = -EINVAL; goto bail; } bg_blkno = ocfs2_which_suballoc_group(blkno, bit); status = ocfs2_read_group_descriptor(suballoc, alloc_fe, bg_blkno, &group_bh); if (status < 0) { |
5b09b507d ocfs2: Fix some p... |
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mlog(ML_ERROR, "read group %llu failed %d ", (unsigned long long)bg_blkno, status); |
6ca497a83 ocfs2: fix rare s... |
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goto bail; } group = (struct ocfs2_group_desc *) group_bh->b_data; *res = ocfs2_test_bit(bit, (unsigned long *)group->bg_bitmap); bail: brelse(group_bh); mlog_exit(status); return status; } /* * Test if the bit representing this inode (blkno) is set in the * suballocator. * * On success, 0 is returned and *res is 1 for SET; 0 otherwise. * * In the event of failure, a negative value is returned and *res is * meaningless. * * Callers must make sure to hold nfs_sync_lock to prevent * ocfs2_delete_inode() on another node from accessing the same * suballocator concurrently. */ int ocfs2_test_inode_bit(struct ocfs2_super *osb, u64 blkno, int *res) { int status; u16 suballoc_bit = 0, suballoc_slot = 0; struct inode *inode_alloc_inode; struct buffer_head *alloc_bh = NULL; |
5b09b507d ocfs2: Fix some p... |
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mlog_entry("blkno: %llu", (unsigned long long)blkno); |
6ca497a83 ocfs2: fix rare s... |
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status = ocfs2_get_suballoc_slot_bit(osb, blkno, &suballoc_slot, &suballoc_bit); if (status < 0) { mlog(ML_ERROR, "get alloc slot and bit failed %d ", status); goto bail; } inode_alloc_inode = ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, suballoc_slot); if (!inode_alloc_inode) { /* the error code could be inaccurate, but we are not able to * get the correct one. */ status = -EINVAL; mlog(ML_ERROR, "unable to get alloc inode in slot %u ", (u32)suballoc_slot); goto bail; } mutex_lock(&inode_alloc_inode->i_mutex); status = ocfs2_inode_lock(inode_alloc_inode, &alloc_bh, 0); if (status < 0) { mutex_unlock(&inode_alloc_inode->i_mutex); mlog(ML_ERROR, "lock on alloc inode on slot %u failed %d ", (u32)suballoc_slot, status); goto bail; } status = ocfs2_test_suballoc_bit(osb, inode_alloc_inode, alloc_bh, blkno, suballoc_bit, res); if (status < 0) mlog(ML_ERROR, "test suballoc bit failed %d ", status); ocfs2_inode_unlock(inode_alloc_inode, 0); mutex_unlock(&inode_alloc_inode->i_mutex); iput(inode_alloc_inode); brelse(alloc_bh); bail: mlog_exit(status); return status; } |