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fs/gfs2/lops.c
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/* * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
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* * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions |
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* of the GNU General Public License version 2. |
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*/ #include <linux/sched.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/completion.h> #include <linux/buffer_head.h> |
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#include <linux/gfs2_ondisk.h> |
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#include <linux/bio.h> #include <linux/fs.h> |
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#include "gfs2.h" |
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#include "incore.h" |
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#include "inode.h" |
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#include "glock.h" #include "log.h" #include "lops.h" #include "meta_io.h" #include "recovery.h" #include "rgrp.h" #include "trans.h" |
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#include "util.h" |
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#include "trace_gfs2.h" |
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/** * gfs2_pin - Pin a buffer in memory * @sdp: The superblock * @bh: The buffer to be pinned * * The log lock must be held when calling this function */ static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) { struct gfs2_bufdata *bd; |
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BUG_ON(!current->journal_info); |
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clear_buffer_dirty(bh); if (test_set_buffer_pinned(bh)) gfs2_assert_withdraw(sdp, 0); if (!buffer_uptodate(bh)) gfs2_io_error_bh(sdp, bh); bd = bh->b_private; /* If this buffer is in the AIL and it has already been written * to in-place disk block, remove it from the AIL. */ |
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spin_lock(&sdp->sd_ail_lock); |
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if (bd->bd_ail) list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list); |
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spin_unlock(&sdp->sd_ail_lock); |
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get_bh(bh); |
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atomic_inc(&sdp->sd_log_pinned); |
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trace_gfs2_pin(bd, 1); |
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} |
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static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) { return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; } static void maybe_release_space(struct gfs2_bufdata *bd) { struct gfs2_glock *gl = bd->bd_gl; struct gfs2_sbd *sdp = gl->gl_sbd; struct gfs2_rgrpd *rgd = gl->gl_object; unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; struct gfs2_bitmap *bi = rgd->rd_bits + index; if (bi->bi_clone == 0) return; if (sdp->sd_args.ar_discard) gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi); memcpy(bi->bi_clone + bi->bi_offset, bd->bd_bh->b_data + bi->bi_offset, bi->bi_len); clear_bit(GBF_FULL, &bi->bi_flags); rgd->rd_free_clone = rgd->rd_free; } |
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/** * gfs2_unpin - Unpin a buffer * @sdp: the filesystem the buffer belongs to * @bh: The buffer to unpin * @ai: |
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* @flags: The inode dirty flags |
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* */ static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, struct gfs2_ail *ai) { struct gfs2_bufdata *bd = bh->b_private; |
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BUG_ON(!buffer_uptodate(bh)); BUG_ON(!buffer_pinned(bh)); |
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lock_buffer(bh); mark_buffer_dirty(bh); clear_buffer_pinned(bh); |
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if (buffer_is_rgrp(bd)) maybe_release_space(bd); |
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spin_lock(&sdp->sd_ail_lock); |
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if (bd->bd_ail) { list_del(&bd->bd_ail_st_list); brelse(bh); } else { struct gfs2_glock *gl = bd->bd_gl; list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); atomic_inc(&gl->gl_ail_count); } bd->bd_ail = ai; list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list); |
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spin_unlock(&sdp->sd_ail_lock); |
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clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); |
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trace_gfs2_pin(bd, 0); |
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unlock_buffer(bh); |
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atomic_dec(&sdp->sd_log_pinned); |
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} |
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static inline struct gfs2_log_descriptor *bh_log_desc(struct buffer_head *bh) { return (struct gfs2_log_descriptor *)bh->b_data; } static inline __be64 *bh_log_ptr(struct buffer_head *bh) { struct gfs2_log_descriptor *ld = bh_log_desc(bh); return (__force __be64 *)(ld + 1); } static inline __be64 *bh_ptr_end(struct buffer_head *bh) { return (__force __be64 *)(bh->b_data + bh->b_size); } static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type) { struct buffer_head *bh = gfs2_log_get_buf(sdp); struct gfs2_log_descriptor *ld = bh_log_desc(bh); ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); ld->ld_type = cpu_to_be32(ld_type); ld->ld_length = 0; ld->ld_data1 = 0; ld->ld_data2 = 0; memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); return bh; } |
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static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) { struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); |
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struct gfs2_meta_header *mh; |
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struct gfs2_trans *tr; |
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lock_buffer(bd->bd_bh); |
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gfs2_log_lock(sdp); |
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if (!list_empty(&bd->bd_list_tr)) goto out; |
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tr = current->journal_info; |
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tr->tr_touched = 1; tr->tr_num_buf++; list_add(&bd->bd_list_tr, &tr->tr_list_buf); |
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if (!list_empty(&le->le_list)) |
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goto out; |
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set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); |
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gfs2_meta_check(sdp, bd->bd_bh); |
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gfs2_pin(sdp, bd->bd_bh); |
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mh = (struct gfs2_meta_header *)bd->bd_bh->b_data; mh->__pad0 = cpu_to_be64(0); mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); |
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sdp->sd_log_num_buf++; list_add(&le->le_list, &sdp->sd_log_le_buf); |
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tr->tr_num_buf_new++; |
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out: gfs2_log_unlock(sdp); unlock_buffer(bd->bd_bh); |
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} |
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static void buf_lo_before_commit(struct gfs2_sbd *sdp) { struct buffer_head *bh; struct gfs2_log_descriptor *ld; struct gfs2_bufdata *bd1 = NULL, *bd2; |
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unsigned int total; |
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unsigned int limit; unsigned int num; unsigned n; __be64 *ptr; |
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limit = buf_limit(sdp); |
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/* for 4k blocks, limit = 503 */ |
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gfs2_log_lock(sdp); total = sdp->sd_log_num_buf; |
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bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list); while(total) { num = total; if (total > limit) num = limit; |
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gfs2_log_unlock(sdp); |
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bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA); |
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gfs2_log_lock(sdp); |
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ld = bh_log_desc(bh); ptr = bh_log_ptr(bh); |
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ld->ld_length = cpu_to_be32(num + 1); ld->ld_data1 = cpu_to_be32(num); |
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n = 0; |
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list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf, bd_le.le_list) { |
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*ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); if (++n >= num) break; } |
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gfs2_log_unlock(sdp); |
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submit_bh(WRITE_SYNC, bh); |
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gfs2_log_lock(sdp); |
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n = 0; |
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list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf, bd_le.le_list) { |
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get_bh(bd2->bd_bh); |
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gfs2_log_unlock(sdp); |
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lock_buffer(bd2->bd_bh); |
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bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); |
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submit_bh(WRITE_SYNC, bh); |
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gfs2_log_lock(sdp); |
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if (++n >= num) break; } |
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BUG_ON(total < num); |
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total -= num; } |
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gfs2_log_unlock(sdp); |
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} static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) { struct list_head *head = &sdp->sd_log_le_buf; struct gfs2_bufdata *bd; while (!list_empty(head)) { bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); list_del_init(&bd->bd_le.le_list); sdp->sd_log_num_buf--; |
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gfs2_unpin(sdp, bd->bd_bh, ai); |
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} gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); } static void buf_lo_before_scan(struct gfs2_jdesc *jd, |
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struct gfs2_log_header_host *head, int pass) |
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{ |
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struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
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if (pass != 0) return; sdp->sd_found_blocks = 0; sdp->sd_replayed_blocks = 0; } static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, struct gfs2_log_descriptor *ld, __be64 *ptr, int pass) { |
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struct gfs2_inode *ip = GFS2_I(jd->jd_inode); struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
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struct gfs2_glock *gl = ip->i_gl; |
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unsigned int blks = be32_to_cpu(ld->ld_data1); struct buffer_head *bh_log, *bh_ip; |
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u64 blkno; |
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int error = 0; if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) return 0; gfs2_replay_incr_blk(sdp, &start); for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { blkno = be64_to_cpu(*ptr++); sdp->sd_found_blocks++; if (gfs2_revoke_check(sdp, blkno, start)) continue; error = gfs2_replay_read_block(jd, start, &bh_log); |
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if (error) return error; |
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bh_ip = gfs2_meta_new(gl, blkno); memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); if (gfs2_meta_check(sdp, bh_ip)) error = -EIO; else mark_buffer_dirty(bh_ip); brelse(bh_log); brelse(bh_ip); if (error) break; sdp->sd_replayed_blocks++; } return error; } static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) { |
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struct gfs2_inode *ip = GFS2_I(jd->jd_inode); struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
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if (error) { |
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gfs2_meta_sync(ip->i_gl); |
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return; } if (pass != 1) return; |
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gfs2_meta_sync(ip->i_gl); |
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fs_info(sdp, "jid=%u: Replayed %u of %u blocks ", jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); } static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) { |
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struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); struct gfs2_glock *gl = bd->bd_gl; |
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struct gfs2_trans *tr; |
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tr = current->journal_info; |
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tr->tr_touched = 1; tr->tr_num_revoke++; |
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sdp->sd_log_num_revoke++; |
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atomic_inc(&gl->gl_revokes); set_bit(GLF_LFLUSH, &gl->gl_flags); |
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list_add(&le->le_list, &sdp->sd_log_le_revoke); |
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} static void revoke_lo_before_commit(struct gfs2_sbd *sdp) { struct gfs2_log_descriptor *ld; struct gfs2_meta_header *mh; struct buffer_head *bh; unsigned int offset; struct list_head *head = &sdp->sd_log_le_revoke; |
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struct gfs2_bufdata *bd; |
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if (!sdp->sd_log_num_revoke) return; |
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bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE); ld = bh_log_desc(bh); |
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ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, |
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sizeof(u64))); |
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ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke); |
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offset = sizeof(struct gfs2_log_descriptor); |
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list_for_each_entry(bd, head, bd_le.le_list) { |
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sdp->sd_log_num_revoke--; |
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if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { |
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submit_bh(WRITE_SYNC, bh); |
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bh = gfs2_log_get_buf(sdp); mh = (struct gfs2_meta_header *)bh->b_data; mh->mh_magic = cpu_to_be32(GFS2_MAGIC); |
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mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); |
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offset = sizeof(struct gfs2_meta_header); } |
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*(__be64 *)(bh->b_data + offset) = cpu_to_be64(bd->bd_blkno); |
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offset += sizeof(u64); |
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} gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); |
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submit_bh(WRITE_SYNC, bh); |
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} |
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static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) { struct list_head *head = &sdp->sd_log_le_revoke; struct gfs2_bufdata *bd; struct gfs2_glock *gl; while (!list_empty(head)) { bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); list_del_init(&bd->bd_le.le_list); gl = bd->bd_gl; atomic_dec(&gl->gl_revokes); clear_bit(GLF_LFLUSH, &gl->gl_flags); kmem_cache_free(gfs2_bufdata_cachep, bd); } } |
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static void revoke_lo_before_scan(struct gfs2_jdesc *jd, |
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struct gfs2_log_header_host *head, int pass) |
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{ |
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struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
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if (pass != 0) return; sdp->sd_found_revokes = 0; sdp->sd_replay_tail = head->lh_tail; } static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, struct gfs2_log_descriptor *ld, __be64 *ptr, int pass) { |
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411 |
struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa5 [GFS2] The core o... |
412 413 414 415 |
unsigned int blks = be32_to_cpu(ld->ld_length); unsigned int revokes = be32_to_cpu(ld->ld_data1); struct buffer_head *bh; unsigned int offset; |
cd915493f [GFS2] Change all... |
416 |
u64 blkno; |
b3b94faa5 [GFS2] The core o... |
417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 |
int first = 1; int error; if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) return 0; offset = sizeof(struct gfs2_log_descriptor); for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { error = gfs2_replay_read_block(jd, start, &bh); if (error) return error; if (!first) gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); |
cd915493f [GFS2] Change all... |
432 |
while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { |
b3b94faa5 [GFS2] The core o... |
433 434 435 |
blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); error = gfs2_revoke_add(sdp, blkno, start); |
3ad62e87c [GFS2] Plug an un... |
436 437 |
if (error < 0) { brelse(bh); |
b3b94faa5 [GFS2] The core o... |
438 |
return error; |
3ad62e87c [GFS2] Plug an un... |
439 |
} |
b3b94faa5 [GFS2] The core o... |
440 441 442 443 444 |
else if (error) sdp->sd_found_revokes++; if (!--revokes) break; |
cd915493f [GFS2] Change all... |
445 |
offset += sizeof(u64); |
b3b94faa5 [GFS2] The core o... |
446 447 448 449 450 451 452 453 454 455 456 457 |
} brelse(bh); offset = sizeof(struct gfs2_meta_header); first = 0; } return 0; } static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) { |
feaa7bba0 [GFS2] Fix unlink... |
458 |
struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa5 [GFS2] The core o... |
459 460 461 462 463 464 465 466 467 468 469 470 471 472 |
if (error) { gfs2_revoke_clean(sdp); return; } if (pass != 1) return; fs_info(sdp, "jid=%u: Found %u revoke tags ", jd->jd_jid, sdp->sd_found_revokes); gfs2_revoke_clean(sdp); } |
18ec7d5c3 [GFS2] Make journ... |
473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 |
/** * databuf_lo_add - Add a databuf to the transaction. * * This is used in two distinct cases: * i) In ordered write mode * We put the data buffer on a list so that we can ensure that its * synced to disk at the right time * ii) In journaled data mode * We need to journal the data block in the same way as metadata in * the functions above. The difference is that here we have a tag * which is two __be64's being the block number (as per meta data) * and a flag which says whether the data block needs escaping or * not. This means we need a new log entry for each 251 or so data * blocks, which isn't an enormous overhead but twice as much as * for normal metadata blocks. */ |
b3b94faa5 [GFS2] The core o... |
489 490 |
static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) { |
18ec7d5c3 [GFS2] Make journ... |
491 |
struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); |
5c676f6d3 [GFS2] Macros rem... |
492 |
struct gfs2_trans *tr = current->journal_info; |
18ec7d5c3 [GFS2] Make journ... |
493 |
struct address_space *mapping = bd->bd_bh->b_page->mapping; |
feaa7bba0 [GFS2] Fix unlink... |
494 |
struct gfs2_inode *ip = GFS2_I(mapping->host); |
b3b94faa5 [GFS2] The core o... |
495 |
|
9b9107a5a [GFS2] Move pin/u... |
496 |
lock_buffer(bd->bd_bh); |
8bd957276 [GFS2] Fix list c... |
497 |
gfs2_log_lock(sdp); |
9ff8ec32e [GFS2] Split gfs2... |
498 499 500 501 502 503 504 505 |
if (tr) { if (!list_empty(&bd->bd_list_tr)) goto out; tr->tr_touched = 1; if (gfs2_is_jdata(ip)) { tr->tr_num_buf++; list_add(&bd->bd_list_tr, &tr->tr_list_buf); } |
773ed1a04 [GFS2] Addendum t... |
506 |
} |
2332c4435 [GFS2] assertion ... |
507 |
if (!list_empty(&le->le_list)) |
9b9107a5a [GFS2] Move pin/u... |
508 |
goto out; |
2332c4435 [GFS2] assertion ... |
509 |
|
2bcd610d2 [GFS2] Don't add ... |
510 511 |
set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); |
2332c4435 [GFS2] assertion ... |
512 |
if (gfs2_is_jdata(ip)) { |
2332c4435 [GFS2] assertion ... |
513 514 |
gfs2_pin(sdp, bd->bd_bh); tr->tr_num_databuf_new++; |
d7b616e25 [GFS2] Clean up o... |
515 |
sdp->sd_log_num_databuf++; |
e5884636d GFS2: ordered wri... |
516 |
list_add_tail(&le->le_list, &sdp->sd_log_le_databuf); |
d7b616e25 [GFS2] Clean up o... |
517 |
} else { |
e5884636d GFS2: ordered wri... |
518 |
list_add_tail(&le->le_list, &sdp->sd_log_le_ordered); |
9b9107a5a [GFS2] Move pin/u... |
519 |
} |
9b9107a5a [GFS2] Move pin/u... |
520 |
out: |
b3b94faa5 [GFS2] The core o... |
521 |
gfs2_log_unlock(sdp); |
9b9107a5a [GFS2] Move pin/u... |
522 |
unlock_buffer(bd->bd_bh); |
b3b94faa5 [GFS2] The core o... |
523 |
} |
16615be18 [GFS2] Clean up j... |
524 |
static void gfs2_check_magic(struct buffer_head *bh) |
18ec7d5c3 [GFS2] Make journ... |
525 |
{ |
18ec7d5c3 [GFS2] Make journ... |
526 527 |
void *kaddr; __be32 *ptr; |
18ec7d5c3 [GFS2] Make journ... |
528 |
|
16615be18 [GFS2] Clean up j... |
529 530 |
clear_buffer_escaped(bh); kaddr = kmap_atomic(bh->b_page, KM_USER0); |
18ec7d5c3 [GFS2] Make journ... |
531 532 |
ptr = kaddr + bh_offset(bh); if (*ptr == cpu_to_be32(GFS2_MAGIC)) |
16615be18 [GFS2] Clean up j... |
533 |
set_buffer_escaped(bh); |
c312c4fdc [GFS2] Pass the c... |
534 |
kunmap_atomic(kaddr, KM_USER0); |
18ec7d5c3 [GFS2] Make journ... |
535 |
} |
16615be18 [GFS2] Clean up j... |
536 537 538 |
static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh, struct list_head *list, struct list_head *done, unsigned int n) |
b3b94faa5 [GFS2] The core o... |
539 |
{ |
16615be18 [GFS2] Clean up j... |
540 |
struct buffer_head *bh1; |
18ec7d5c3 [GFS2] Make journ... |
541 |
struct gfs2_log_descriptor *ld; |
16615be18 [GFS2] Clean up j... |
542 543 |
struct gfs2_bufdata *bd; __be64 *ptr; |
d7b616e25 [GFS2] Clean up o... |
544 |
|
16615be18 [GFS2] Clean up j... |
545 546 |
if (!bh) return; |
b3b94faa5 [GFS2] The core o... |
547 |
|
16615be18 [GFS2] Clean up j... |
548 549 550 |
ld = bh_log_desc(bh); ld->ld_length = cpu_to_be32(n + 1); ld->ld_data1 = cpu_to_be32(n); |
b3b94faa5 [GFS2] The core o... |
551 |
|
16615be18 [GFS2] Clean up j... |
552 553 554 |
ptr = bh_log_ptr(bh); get_bh(bh); |
721a9602e block: kill off R... |
555 |
submit_bh(WRITE_SYNC, bh); |
f55ab26a8 [GFS2] Use mutice... |
556 |
gfs2_log_lock(sdp); |
16615be18 [GFS2] Clean up j... |
557 558 559 560 561 562 563 |
while(!list_empty(list)) { bd = list_entry(list->next, struct gfs2_bufdata, bd_le.le_list); list_move_tail(&bd->bd_le.le_list, done); get_bh(bd->bd_bh); while (be64_to_cpu(*ptr) != bd->bd_bh->b_blocknr) { gfs2_log_incr_head(sdp); ptr += 2; |
18ec7d5c3 [GFS2] Make journ... |
564 |
} |
f55ab26a8 [GFS2] Use mutice... |
565 |
gfs2_log_unlock(sdp); |
16615be18 [GFS2] Clean up j... |
566 567 568 569 570 571 572 573 574 575 576 577 578 579 |
lock_buffer(bd->bd_bh); if (buffer_escaped(bd->bd_bh)) { void *kaddr; bh1 = gfs2_log_get_buf(sdp); kaddr = kmap_atomic(bd->bd_bh->b_page, KM_USER0); memcpy(bh1->b_data, kaddr + bh_offset(bd->bd_bh), bh1->b_size); kunmap_atomic(kaddr, KM_USER0); *(__be32 *)bh1->b_data = 0; clear_buffer_escaped(bd->bd_bh); unlock_buffer(bd->bd_bh); brelse(bd->bd_bh); } else { bh1 = gfs2_log_fake_buf(sdp, bd->bd_bh); |
18ec7d5c3 [GFS2] Make journ... |
580 |
} |
721a9602e block: kill off R... |
581 |
submit_bh(WRITE_SYNC, bh1); |
f55ab26a8 [GFS2] Use mutice... |
582 |
gfs2_log_lock(sdp); |
16615be18 [GFS2] Clean up j... |
583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 |
ptr += 2; } gfs2_log_unlock(sdp); brelse(bh); } /** * databuf_lo_before_commit - Scan the data buffers, writing as we go * */ static void databuf_lo_before_commit(struct gfs2_sbd *sdp) { struct gfs2_bufdata *bd = NULL; struct buffer_head *bh = NULL; unsigned int n = 0; __be64 *ptr = NULL, *end = NULL; LIST_HEAD(processed); LIST_HEAD(in_progress); gfs2_log_lock(sdp); while (!list_empty(&sdp->sd_log_le_databuf)) { if (ptr == end) { |
f55ab26a8 [GFS2] Use mutice... |
606 |
gfs2_log_unlock(sdp); |
16615be18 [GFS2] Clean up j... |
607 608 609 610 611 |
gfs2_write_blocks(sdp, bh, &in_progress, &processed, n); n = 0; bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_JDATA); ptr = bh_log_ptr(bh); end = bh_ptr_end(bh) - 1; |
f55ab26a8 [GFS2] Use mutice... |
612 |
gfs2_log_lock(sdp); |
16615be18 [GFS2] Clean up j... |
613 |
continue; |
18ec7d5c3 [GFS2] Make journ... |
614 |
} |
16615be18 [GFS2] Clean up j... |
615 616 617 618 619 620 |
bd = list_entry(sdp->sd_log_le_databuf.next, struct gfs2_bufdata, bd_le.le_list); list_move_tail(&bd->bd_le.le_list, &in_progress); gfs2_check_magic(bd->bd_bh); *ptr++ = cpu_to_be64(bd->bd_bh->b_blocknr); *ptr++ = cpu_to_be64(buffer_escaped(bh) ? 1 : 0); n++; |
b3b94faa5 [GFS2] The core o... |
621 |
} |
f55ab26a8 [GFS2] Use mutice... |
622 |
gfs2_log_unlock(sdp); |
16615be18 [GFS2] Clean up j... |
623 624 625 626 |
gfs2_write_blocks(sdp, bh, &in_progress, &processed, n); gfs2_log_lock(sdp); list_splice(&processed, &sdp->sd_log_le_databuf); gfs2_log_unlock(sdp); |
18ec7d5c3 [GFS2] Make journ... |
627 628 629 630 631 632 |
} static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, struct gfs2_log_descriptor *ld, __be64 *ptr, int pass) { |
feaa7bba0 [GFS2] Fix unlink... |
633 634 |
struct gfs2_inode *ip = GFS2_I(jd->jd_inode); struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
5c676f6d3 [GFS2] Macros rem... |
635 |
struct gfs2_glock *gl = ip->i_gl; |
18ec7d5c3 [GFS2] Make journ... |
636 637 |
unsigned int blks = be32_to_cpu(ld->ld_data1); struct buffer_head *bh_log, *bh_ip; |
cd915493f [GFS2] Change all... |
638 639 |
u64 blkno; u64 esc; |
18ec7d5c3 [GFS2] Make journ... |
640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 |
int error = 0; if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) return 0; gfs2_replay_incr_blk(sdp, &start); for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { blkno = be64_to_cpu(*ptr++); esc = be64_to_cpu(*ptr++); sdp->sd_found_blocks++; if (gfs2_revoke_check(sdp, blkno, start)) continue; error = gfs2_replay_read_block(jd, start, &bh_log); if (error) return error; bh_ip = gfs2_meta_new(gl, blkno); memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); /* Unescape */ if (esc) { __be32 *eptr = (__be32 *)bh_ip->b_data; *eptr = cpu_to_be32(GFS2_MAGIC); } mark_buffer_dirty(bh_ip); brelse(bh_log); brelse(bh_ip); |
18ec7d5c3 [GFS2] Make journ... |
671 672 673 674 675 676 677 678 679 680 681 |
sdp->sd_replayed_blocks++; } return error; } /* FIXME: sort out accounting for log blocks etc. */ static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) { |
feaa7bba0 [GFS2] Fix unlink... |
682 683 |
struct gfs2_inode *ip = GFS2_I(jd->jd_inode); struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
18ec7d5c3 [GFS2] Make journ... |
684 685 |
if (error) { |
7276b3b0c [GFS2] Tidy up me... |
686 |
gfs2_meta_sync(ip->i_gl); |
18ec7d5c3 [GFS2] Make journ... |
687 688 689 690 691 692 |
return; } if (pass != 1) return; /* data sync? */ |
7276b3b0c [GFS2] Tidy up me... |
693 |
gfs2_meta_sync(ip->i_gl); |
18ec7d5c3 [GFS2] Make journ... |
694 695 696 697 698 699 700 701 702 703 704 705 706 |
fs_info(sdp, "jid=%u: Replayed %u of %u data blocks ", jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); } static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) { struct list_head *head = &sdp->sd_log_le_databuf; struct gfs2_bufdata *bd; while (!list_empty(head)) { bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); |
b8e1aabf2 [GFS2] Another li... |
707 |
list_del_init(&bd->bd_le.le_list); |
18ec7d5c3 [GFS2] Make journ... |
708 |
sdp->sd_log_num_databuf--; |
18ec7d5c3 [GFS2] Make journ... |
709 |
gfs2_unpin(sdp, bd->bd_bh, ai); |
18ec7d5c3 [GFS2] Make journ... |
710 |
} |
b3b94faa5 [GFS2] The core o... |
711 712 |
gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); } |
18ec7d5c3 [GFS2] Make journ... |
713 |
|
b09e593d7 [GFS2] Fix a ref ... |
714 |
const struct gfs2_log_operations gfs2_buf_lops = { |
b3b94faa5 [GFS2] The core o... |
715 |
.lo_add = buf_lo_add, |
b3b94faa5 [GFS2] The core o... |
716 717 718 719 720 |
.lo_before_commit = buf_lo_before_commit, .lo_after_commit = buf_lo_after_commit, .lo_before_scan = buf_lo_before_scan, .lo_scan_elements = buf_lo_scan_elements, .lo_after_scan = buf_lo_after_scan, |
ea67eedb2 [GFS2] Fix end of... |
721 |
.lo_name = "buf", |
b3b94faa5 [GFS2] The core o... |
722 |
}; |
b09e593d7 [GFS2] Fix a ref ... |
723 |
const struct gfs2_log_operations gfs2_revoke_lops = { |
b3b94faa5 [GFS2] The core o... |
724 725 |
.lo_add = revoke_lo_add, .lo_before_commit = revoke_lo_before_commit, |
f42ab0852 GFS2: Optimise gl... |
726 |
.lo_after_commit = revoke_lo_after_commit, |
b3b94faa5 [GFS2] The core o... |
727 728 729 |
.lo_before_scan = revoke_lo_before_scan, .lo_scan_elements = revoke_lo_scan_elements, .lo_after_scan = revoke_lo_after_scan, |
ea67eedb2 [GFS2] Fix end of... |
730 |
.lo_name = "revoke", |
b3b94faa5 [GFS2] The core o... |
731 |
}; |
b09e593d7 [GFS2] Fix a ref ... |
732 |
const struct gfs2_log_operations gfs2_rg_lops = { |
ea67eedb2 [GFS2] Fix end of... |
733 |
.lo_name = "rg", |
b3b94faa5 [GFS2] The core o... |
734 |
}; |
b09e593d7 [GFS2] Fix a ref ... |
735 |
const struct gfs2_log_operations gfs2_databuf_lops = { |
b3b94faa5 [GFS2] The core o... |
736 737 |
.lo_add = databuf_lo_add, .lo_before_commit = databuf_lo_before_commit, |
18ec7d5c3 [GFS2] Make journ... |
738 739 740 |
.lo_after_commit = databuf_lo_after_commit, .lo_scan_elements = databuf_lo_scan_elements, .lo_after_scan = databuf_lo_after_scan, |
ea67eedb2 [GFS2] Fix end of... |
741 |
.lo_name = "databuf", |
b3b94faa5 [GFS2] The core o... |
742 |
}; |
b09e593d7 [GFS2] Fix a ref ... |
743 |
const struct gfs2_log_operations *gfs2_log_ops[] = { |
16615be18 [GFS2] Clean up j... |
744 |
&gfs2_databuf_lops, |
b3b94faa5 [GFS2] The core o... |
745 |
&gfs2_buf_lops, |
b3b94faa5 [GFS2] The core o... |
746 |
&gfs2_rg_lops, |
16615be18 [GFS2] Clean up j... |
747 |
&gfs2_revoke_lops, |
ea67eedb2 [GFS2] Fix end of... |
748 |
NULL, |
b3b94faa5 [GFS2] The core o... |
749 |
}; |