ocfs2: unlock bh_state if bg check fails

We should unlock bh_stat if bg->bg_free_bits_count > bg->bg_bits

Link: http://lkml.kernel.org/r/1516843095-23680-1-git-send-email-ge.changwei@h3c.com
Signed-off-by: Changwei Ge <ge.changwei@h3c.com>
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <ge.changwei@h3c.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index 2d8d31c85f454dbd06b776c8bbf90abe12cdfd0c..d8f5f6ce99dc880f0bf9422c98baf773ba2fc791 100644 (file)
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -2438,6 +2438,8 @@ static int ocfs2_block_group_clear_bits(handle_t *handle,
        }
        le16_add_cpu(&bg->bg_free_bits_count, num_bits);
        if (le16_to_cpu(bg->bg_free_bits_count) > le16_to_cpu(bg->bg_bits)) {
+               if (undo_fn)
+                       jbd_unlock_bh_state(group_bh);
                return ocfs2_error(alloc_inode->i_sb, "Group descriptor # %llu has bit count %u but claims %u are freed. num_bits %d\n",
                                   (unsigned long long)le64_to_cpu(bg->bg_blkno),
                                   le16_to_cpu(bg->bg_bits),