linux-kernel - Re: [PATCH 2/2] cfq-iosched: get rid of the need for __GFP_FAIL in cfq_find_alloc

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Message-ID: <20090709201510.GU23611@kernel.dk>
Date:	Thu, 9 Jul 2009 22:15:11 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	Jeff Moyer <jmoyer@...hat.com>, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH 2/2] cfq-iosched: get rid of the need for __GFP_FAIL in
	cfq_find_alloc_queue()

On Thu, Jul 09 2009, Vivek Goyal wrote:
> Sure. Here you go.
> 
> In case memory is scarce, we now default to oom_cfqq. Once memory is
> available again, we should allocate a new cfqq and stop using oom_cfqq for
> a particular io context.
> 
> Once a new request comes in, check if we are using oom_cfqq, and if yes,
> try to allocate a new cfqq.
> 
> Tested the patch by forcing the use of oom_cfqq and upon next request thread
> realized that it was using oom_cfqq and it allocated a new cfqq.

Thanks, applied!

-- 
Jens Axboe

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