linux-kernel - Re: [PATCH 1/2] cfq-iosched: Get rid of cfqq wait_busy

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Message-ID: <x49fx7knf6d.fsf@segfault.boston.devel.redhat.com>
Date:	Wed, 09 Dec 2009 14:03:06 -0500
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	jens.axboe@...cle.com, linux-kernel@...r.kernel.org,
	guijianfeng@...fujitsu.com
Subject: Re: [PATCH 1/2] cfq-iosched: Get rid of cfqq wait_busy_done flag

Vivek Goyal <vgoyal@...hat.com> writes:

> o Get rid of wait_busy_done flag. This flag only tells we were doing wait
>   busy on a queue and that queue got request so expire it. That information
>   can easily be obtained by (cfq_cfqq_wait_busy() && queue_is_not_empty). So
>   remove this flag and keep code simple.
>
> Signed-off-by: Vivek Goyal <vgoyal@...hat.com>
Reviewed-by: Jeff Moyer <jmoyer@...hat.com>
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