Re: [patch] use cheaper elv_queue_empty when unplug a device

Jens Axboe
2005-03-29T08:30:42Z

On Mon, Mar 28 2005, Chen, Kenneth W wrote:
> This patch was posted last year and if I remember correctly, Jens said
> he is OK with the patch. In function __generic_unplug_deivce(), kernel
> can use a cheaper function elv_queue_empty() instead of more expensive
> elv_next_request to find whether the queue is empty or not. blk_run_queue
> can also made conditional on whether queue's emptiness before calling
> request_fn().
>
>
> Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>

Looks good, thanks.

Signed-off-by: Jens Axboe <axboe@suse.de>

--
Jens Axboe