[PATCH] [jbd] Add lock annotation to jbd_sync_bh

jbd_sync_bh releases journal->j_list_lock.  Add a lock annotation to this
function so that sparse can check callers for lock pairing, and so that sparse
will not complain about this function since it intentionally uses the lock in
this manner.

Signed-off-by: Josh Triplett <[email protected]>
---
 fs/jbd/checkpoint.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index 47678a2..d068559 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -145,6 +145,7 @@ void __log_wait_for_space(journal_t *jou
  * jbd_unlock_bh_state().
  */
 static void jbd_sync_bh(journal_t *journal, struct buffer_head *bh)
+	__releases(journal->j_list_lock)
 {
 	get_bh(bh);
 	spin_unlock(&journal->j_list_lock);