diff options
Diffstat (limited to 'kernel/sched.c')
-rw-r--r-- | kernel/sched.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 48013633d792..a187c3fe027b 100644 --- a/kernel/sched.c +++ b/kernel/sched.c | |||
@@ -4111,20 +4111,20 @@ need_resched: | |||
4111 | try_to_wake_up_local(to_wakeup); | 4111 | try_to_wake_up_local(to_wakeup); |
4112 | } | 4112 | } |
4113 | deactivate_task(rq, prev, DEQUEUE_SLEEP); | 4113 | deactivate_task(rq, prev, DEQUEUE_SLEEP); |
4114 | |||
4115 | /* | ||
4116 | * If we are going to sleep and we have plugged IO queued, make | ||
4117 | * sure to submit it to avoid deadlocks. | ||
4118 | */ | ||
4119 | if (blk_needs_flush_plug(prev)) { | ||
4120 | raw_spin_unlock(&rq->lock); | ||
4121 | blk_flush_plug(prev); | ||
4122 | raw_spin_lock(&rq->lock); | ||
4123 | } | ||
4114 | } | 4124 | } |
4115 | switch_count = &prev->nvcsw; | 4125 | switch_count = &prev->nvcsw; |
4116 | } | 4126 | } |
4117 | 4127 | ||
4118 | /* | ||
4119 | * If we are going to sleep and we have plugged IO queued, make | ||
4120 | * sure to submit it to avoid deadlocks. | ||
4121 | */ | ||
4122 | if (prev->state != TASK_RUNNING && blk_needs_flush_plug(prev)) { | ||
4123 | raw_spin_unlock(&rq->lock); | ||
4124 | blk_flush_plug(prev); | ||
4125 | raw_spin_lock(&rq->lock); | ||
4126 | } | ||
4127 | |||
4128 | pre_schedule(rq, prev); | 4128 | pre_schedule(rq, prev); |
4129 | 4129 | ||
4130 | if (unlikely(!rq->nr_running)) | 4130 | if (unlikely(!rq->nr_running)) |