Commit a47726bc authored Apr 14, 2015 by Joseph Qi Committed by Linus Torvalds Apr 14, 2015

ocfs2: rollback the cleared bits if error occurs after ocfs2_block_group_clear_bits

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>

parent 62f8b1f0

fs/ocfs2/suballoc.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}

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