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

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Message-Id: <200910061223.04293.elendil@planet.nl>
Date:	Tue, 6 Oct 2009 12:23:01 +0200
From:	Frans Pop <elendil@...net.nl>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Mel Gorman <mel@....ul.ie>, "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>,
	Reinette Chatre <reinette.chatre@...el.com>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	Karol Lewandowski <karol.k.lewandowski@...il.com>,
	linux-mm@...ck.org
Subject: Re: [Bug #14141] order 2 page allocation failures in iwlagn

On Tuesday 06 October 2009, David Rientjes wrote:
> On Mon, 5 Oct 2009, Frans Pop wrote:
> > And the winner is:
> > 2ff05b2b4eac2e63d345fc731ea151a060247f53 is first bad commit
> > commit 2ff05b2b4eac2e63d345fc731ea151a060247f53
> > Author: David Rientjes <rientjes@...gle.com>
> > Date:   Tue Jun 16 15:32:56 2009 -0700
> >
> >     oom: move oom_adj value from task_struct to mm_struct
> >
> > I'm confident that the bisection is good. The test case was very
> > reliable while zooming in on the merge from akpm.
>
> I doubt it for two reasons: (i) this commit was reverted in 0753ba0
> since 2.6.31-rc7 and is no longer in the kernel, and (ii) these are
> GFP_ATOMIC allocations which would be unaffected by oom killer scores.

OK. Looks like I have been getting some false "good" results. I've been 
redoing part of the bisect and am getting close to a new candidate. Will 
explain further when I have that.

Cheers,
FJP
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