diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 09d9591..1706cbb 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -557,7 +557,7 @@
 	bit = sync ? BDI_sync_congested : BDI_async_congested;
 	if (test_and_clear_bit(bit, &bdi->state))
 		atomic_dec(&nr_bdi_congested[sync]);
-	smp_mb__after_clear_bit();
+	smp_mb__after_atomic();
 	if (waitqueue_active(wqh))
 		wake_up(wqh);
 }