diff options
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/futex.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/futex.c b/kernel/futex.c index 463af2efa512..b911adceb2c4 100644 --- a/kernel/futex.c +++ b/kernel/futex.c | |||
@@ -1656,6 +1656,12 @@ out: | |||
1656 | static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q, | 1656 | static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q, |
1657 | struct hrtimer_sleeper *timeout) | 1657 | struct hrtimer_sleeper *timeout) |
1658 | { | 1658 | { |
1659 | /* | ||
1660 | * The task state is guaranteed to be set before another task can | ||
1661 | * wake it. set_current_state() is implemented using set_mb() and | ||
1662 | * queue_me() calls spin_unlock() upon completion, both serializing | ||
1663 | * access to the hash list and forcing another memory barrier. | ||
1664 | */ | ||
1659 | set_current_state(TASK_INTERRUPTIBLE); | 1665 | set_current_state(TASK_INTERRUPTIBLE); |
1660 | queue_me(q, hb); | 1666 | queue_me(q, hb); |
1661 | 1667 | ||