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[PATCH] blk_execute_rq_nowait-speedup 

Both elv_add_request() and generic_unplug_device() grab the queue lock
and disable interrupts, do that locally and use the __ variants.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jens Axboe <axboe@suse.de>
This commit is contained in:
Andrew Morton 2006-03-22 08:08:01 +01:00 committed by Jens Axboe
parent b8fca1c768
commit 4c5d0bbde9
1 changed files with 5 additions and 3 deletions
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8
block/ll_rw_blk.c
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@ -2477,10 +2477,12 @@ void blk_execute_rq_nowait(request_queue_t *q, struct gendisk *bd_disk,
rq->rq_disk = bd_disk;
rq->flags |= REQ_NOMERGE;
rq->end_io = done;
elv_add_request(q, rq, where, 1);
generic_unplug_device(q);
WARN_ON(irqs_disabled());
spin_lock_irq(q->queue_lock);
__elv_add_request(q, rq, where, 1);
__generic_unplug_device(q);
spin_unlock_irq(q->queue_lock);
}
EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);
/**