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

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Message-Id: <200910271210.31014.elendil@planet.nl>
Date:	Tue, 27 Oct 2009 12:10:27 +0100
From:	Frans Pop <elendil@...net.nl>
To:	reinette chatre <reinette.chatre@...el.com>
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

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>

Cheers,
FJP
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