linux-kernel - Re: [PATCH] cfq-iosched: don't allow aliased requests to starve others

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Message-ID: <4C4AB2C0.6050300@kernel.dk>
Date:	Sat, 24 Jul 2010 11:30:40 +0200
From:	Jens Axboe <axboe@...nel.dk>
To:	Jeff Moyer <jmoyer@...hat.com>
CC:	Vivek Goyal <vgoyal@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cfq-iosched: don't allow aliased requests to starve others

On 07/23/2010 05:07 PM, Jeff Moyer wrote:
> Vivek Goyal <vgoyal@...hat.com> writes:
>> Also for my education purposes I was curious to know that why can't
>> we keep aliased requests in the service tree. 
> 
> You know, I dug back through the logs, and I didn't find any mention of
> that.  The anticipatory scheduler used to allow such aliases, but then
> that support was removed in favor of a simpler approach.  So, the reason
> may just be out of convenience.

There's no technical reason why we can't do that, at least it'll work in
the rbtree.

-- 
Jens Axboe

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