diff options
Diffstat (limited to 'kernel/sched/psi.c')
| -rw-r--r-- | kernel/sched/psi.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/kernel/sched/psi.c b/kernel/sched/psi.c index 9dd83eb74a9d..8c19a5438d0e 100644 --- a/kernel/sched/psi.c +++ b/kernel/sched/psi.c @@ -1092,10 +1092,11 @@ void psi_trigger_destroy(struct psi_trigger *t) group = t->group; /* - * Wakeup waiters to stop polling. Can happen if cgroup is deleted - * from under a polling process. + * Wakeup waiters to stop polling and clear the queue to prevent it from + * being accessed later. Can happen if cgroup is deleted from under a + * polling process. */ - wake_up_interruptible(&t->event_wait); + wake_up_pollfree(&t->event_wait); mutex_lock(&group->trigger_lock); |