diff --git a/[refs] b/[refs]
index 56968b6d9561..de1707236aed 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8ac2120d90273c590cf7662f03d103519101685b
+refs/heads/master: a464adeb7e8f1cd65ca911e20a7c02e452dc2c17
diff --git a/trunk/fs/aio.c b/trunk/fs/aio.c
index 38f62680fd63..0e11e31dbb77 100644
--- a/trunk/fs/aio.c
+++ b/trunk/fs/aio.c
@@ -562,6 +562,7 @@ static inline void lock_kiocb(struct kiocb *iocb)
 static inline void unlock_kiocb(struct kiocb *iocb)
 {
 	kiocbClearLocked(iocb);
+	smp_mb__after_clear_bit();
 	wake_up_bit(&iocb->ki_flags, KIF_LOCKED);
 }