linux-kernel - Re: [PATCH] cfq: Remove wait_request flag when idle time is being deleted

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Message-ID: <20091210083846.GF8742@kernel.dk>
Date:	Thu, 10 Dec 2009 09:38:46 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Gui Jianfeng <guijianfeng@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cfq: Remove wait_request flag when idle time is being
	deleted

On Thu, Dec 10 2009, Gui Jianfeng wrote:
> Hi Jens,
> 
> I post this patch a few month ago, it seems to get missing, repost again.
> 
> Remove wait_request flag when idle time is being deleted.
> 
> Signed-off-by: Gui Jianfeng <guijianfeng@...fujitsu.com>
> ---
>  block/cfq-iosched.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
> index 69ecee7..96f59ae 100644
> --- a/block/cfq-iosched.c
> +++ b/block/cfq-iosched.c
> @@ -3202,6 +3202,7 @@ cfq_rq_enqueued(struct cfq_data *cfqd, struct cfq_queue *cfqq,
>  			if (blk_rq_bytes(rq) > PAGE_CACHE_SIZE ||
>  			    cfqd->busy_queues > 1) {
>  				del_timer(&cfqd->idle_slice_timer);
> +				cfq_clear_cfqq_wait_request(cfqq);
>  				__blk_run_queue(cfqd->queue);
>  			} else
>  				cfq_mark_cfqq_must_dispatch(cfqq);

Hmm weird, I think it may have gone missing in a badly done merge. I'll
add it, thanks.

-- 
Jens Axboe

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