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[BLOCK] elevator: run queue in elevator_switch

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elevator_dispatch needs to run queue after forced dispatching;
otherwise, the queue might stall.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
This commit is contained in:
Tejun Heo 2005-11-10 08:48:21 +01:00 committed by Jens Axboe
parent 47a004103d
commit 407df2aa29
1 changed files with 2 additions and 0 deletions
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2
block/elevator.c
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@ -696,6 +696,8 @@ static void elevator_switch(request_queue_t *q, struct elevator_type *new_e)
; ;
while (q->rq.elvpriv) { while (q->rq.elvpriv) {
blk_remove_plug(q);
q->request_fn(q);
spin_unlock_irq(q->queue_lock); spin_unlock_irq(q->queue_lock);
msleep(10); msleep(10);
spin_lock_irq(q->queue_lock); spin_lock_irq(q->queue_lock);