Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[firefly-linux-kernel-4.4.55.git] / kernel / futex.c

diff --git a/kernel/futex.c b/kernel/futex.c
index 815d7af2ffe8c6b195e729625ef5bfecb399accb..f3a3a071283cea232512370c2b9f5c87a0b440bf 100644 (file)
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -343,6 +343,8 @@ static void get_futex_key_refs(union futex_key *key)
        case FUT_OFF_MMSHARED:
                futex_get_mm(key); /* implies MB (B) */
                break;
+       default:
+               smp_mb(); /* explicit MB (B) */
        }
 }