twl4030_charger: increase end-of-charge current

[pandora-kernel.git] / fs / signalfd.c

diff --git a/fs/signalfd.c b/fs/signalfd.c
index 79c1eea..7ae2a57 100644 (file)
--- a/fs/signalfd.c
+++ b/fs/signalfd.c
@@ -33,7 +33,11 @@
 void signalfd_cleanup(struct sighand_struct *sighand)
 {
        wait_queue_head_t *wqh = &sighand->signalfd_wqh;
-
+       /*
+        * The lockless check can race with remove_wait_queue() in progress,
+        * but in this case its caller should run under rcu_read_lock() and
+        * sighand_cachep is SLAB_DESTROY_BY_RCU, we can safely return.
+        */
        if (likely(!waitqueue_active(wqh)))
                return;