linux-kernel - Re: [Bug #14141] order 2 page allocation failures in iwlagn

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Date:	Tue, 27 Oct 2009 09:15:16 -0700
From:	reinette chatre <reinette.chatre@...el.com>
To:	Frans Pop <elendil@...net.nl>
Cc:	Mel Gorman <mel@....ul.ie>, David Rientjes <rientjes@...gle.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	Karol Lewandowski <karol.k.lewandowski@...il.com>,
	"Abbas, Mohamed" <mohamed.abbas@...el.com>,
	"John W. Linville" <linville@...driver.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [Bug #14141] order 2 page allocation failures in iwlagn

Hi Frans,

On Tue, 2009-10-27 at 04:10 -0700, Frans Pop wrote:
> Sorry for the delay in replying.
> 
> On Saturday 17 October 2009, reinette chatre wrote:
> > Prompted by this thread we are in process of moving allocation to paged
> > skb. This will definitely reduce the allocation size (from order 2 to
> > order 1) and hopefully help with this problem also. Could you please try
> > with the attached two patches? They are based on 2.6.32-rc4.
> 
> Looks very good! With these patches I no longer get any SKB allocation 
> errors, even during the heaviest freezes while gitk is loading. I do still 
> get (long) music skips during the freezes, but that's not unexpected.
> AFAICT the wireless connection is stable.
> 
> Tested on top of current mainline git: v2.6.32-rc5-81-g964fe08.
> 
> Please add, if you feel it's appropriate, my:
> Reported-and-tested-by: Frans Pop <elendil@...net.nl>

Thank you very much for testing these patches so thoroughly. They are
both on their way upstream already so I am not able to add your
signature at this time. Since these are pretty big changes these patches
will be in 2.6.33.

Reinette


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