From: Jens Axboe <axboe@suse.de>
To: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [patch] use cheaper elv_queue_empty when unplug a device
Date: Tue, 29 Mar 2005 10:06:47 +0200 [thread overview]
Message-ID: <20050329080646.GE16636@suse.de> (raw)
In-Reply-To: <200503290253.j2T2rqg25691@unix-os.sc.intel.com>
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
next prev parent reply other threads:[~2005-03-29 8:30 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-29 2:53 [patch] use cheaper elv_queue_empty when unplug a device Chen, Kenneth W
2005-03-29 8:06 ` Jens Axboe [this message]
2005-03-29 9:19 ` Nick Piggin
2005-03-29 9:21 ` Nick Piggin
2005-03-29 9:28 ` Jens Axboe
2005-03-29 9:50 ` Nick Piggin
2005-03-29 10:06 ` Nick Piggin
2005-03-30 0:57 ` Nick Piggin
2005-03-30 8:11 ` Jens Axboe
2005-04-08 9:45 ` Jens Axboe
2005-04-08 9:55 ` Nick Piggin
2005-04-08 10:02 ` Jens Axboe
2005-04-08 10:22 ` Nick Piggin
2005-03-29 10:10 ` Arjan van de Ven
2005-03-29 10:19 ` Jens Axboe
2005-03-29 10:23 ` Nick Piggin
2005-03-29 13:15 ` Jens Axboe
2005-03-30 0:07 ` Nick Piggin
2005-03-29 19:02 ` Chen, Kenneth W
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