From: Xue jiufei <xuejiu...@huawei.com>
Subject: ocfs2: extend enough credits for freeing one truncate record while
replaying truncate records
Now function ocfs2_replay_truncate_records() first modifies tl_used, then
calls ocfs2_extend_trans() to extend transactions for gd and alloc inode
used for freeing clusters. jbd2_journal_restart() may be called and it
may happen that tl_used in truncate log is decreased but the clusters are
not freed, which means these clusters are lost. So we should avoid
extending transactions in these two operations.
Signed-off-by: joyce.xue <xuejiu...@huawei.com>
Reviewed-by: Mark Fasheh <mfas...@suse.de>
Cc: Joel Becker <jl...@evilplan.org>
Cc: Joseph Qi <joseph...@huawei.com>
Cc: Junxiao Bi <junxiao...@oracle.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
---
fs/ocfs2/alloc.c | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff -puN
fs/ocfs2/alloc.c~extend-enough-credits-for-freeing-one-truncate-record-while-replaying-truncate-records
fs/ocfs2/alloc.c
---
a/fs/ocfs2/alloc.c~extend-enough-credits-for-freeing-one-truncate-record-while-replaying-truncate-records
+++ a/fs/ocfs2/alloc.c
@@ -5954,16 +5954,6 @@ static int ocfs2_replay_truncate_records
ocfs2_journal_dirty(handle, tl_bh);
- /* TODO: Perhaps we can calculate the bulk of the
- * credits up front rather than extending like
- * this. */
- status = ocfs2_extend_trans(handle,
- OCFS2_TRUNCATE_LOG_FLUSH_ONE_REC);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
rec = tl->tl_recs[i];
start_blk = ocfs2_clusters_to_blocks(data_alloc_inode->i_sb,
le32_to_cpu(rec.t_start));
@@ -5984,6 +5974,13 @@ static int ocfs2_replay_truncate_records
goto bail;
}
}
+
+ status = ocfs2_extend_trans(handle,
+ OCFS2_TRUNCATE_LOG_FLUSH_ONE_REC);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
i--;
}
@@ -6042,7 +6039,7 @@ int __ocfs2_flush_truncate_log(struct oc
goto out_mutex;
}
- handle = ocfs2_start_trans(osb, OCFS2_TRUNCATE_LOG_UPDATE);
+ handle = ocfs2_start_trans(osb, OCFS2_TRUNCATE_LOG_FLUSH_ONE_REC);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
mlog_errno(status);
_
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