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authorIngo Molnar <mingo@elte.hu>2011-04-22 04:19:26 -0400
committerIngo Molnar <mingo@elte.hu>2011-04-22 04:19:30 -0400
commiteff430de53be6f3328c3eebe93755f1ecf499e37 (patch)
treec8e5ae958fe3e6656b4e96c83bbda17e649321a2 /kernel/sched.c
parent9cbdb702092a2d82f909312f4ec3eeded77bb82e (diff)
parent91e8549bde9e5cc88c5a2e8c8114389279e240b5 (diff)
Merge branch 'linus' into perf/core
Merge reason: Pick up upstream fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
-rw-r--r--kernel/sched.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 48013633d792..312f8b95c2d4 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_schedule_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))