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ocfs2: rollback the cleared bits if error occurs after ocfs2_block_group_clear_bits

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ocfs2_block_group_clear_bits will clear bits in block group bitmap.
Once it succeeds but fails in the following step, it will cause block
group bitmap mismatch the corresponding count recorded in dinode.
So rollback the cleared bits if error occurs.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joseph Qi 2015-04-14 15:43:27 -07:00 committed by Linus Torvalds
parent 62f8b1f0d6
commit a47726bcf2
1 changed files with 2 additions and 0 deletions
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2
fs/ocfs2/suballoc.c
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@ -2499,6 +2499,8 @@ static int _ocfs2_free_suballoc_bits(handle_t *handle,
alloc_bh, OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
ocfs2_block_group_set_bits(handle, alloc_inode, group, group_bh,
start_bit, count);
goto bail;
}