jbd: Convert atomic_inc() to get_bh()

Convert atomic_inc(&bh->b_count) to get_bh(bh) for consistency.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index 05a38b9..e4b87bc 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -221,7 +221,7 @@
 			goto restart;
 		}
 		if (buffer_locked(bh)) {
-			atomic_inc(&bh->b_count);
+			get_bh(bh);
 			spin_unlock(&journal->j_list_lock);
 			jbd_unlock_bh_state(bh);
 			wait_on_buffer(bh);
@@ -283,7 +283,7 @@
 	int ret = 0;
 
 	if (buffer_locked(bh)) {
-		atomic_inc(&bh->b_count);
+		get_bh(bh);
 		spin_unlock(&journal->j_list_lock);
 		jbd_unlock_bh_state(bh);
 		wait_on_buffer(bh);