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

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Message-ID: <alpine.DEB.1.00.0910051700440.31688@chino.kir.corp.google.com>
Date:	Mon, 5 Oct 2009 17:04:55 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Frans Pop <elendil@...net.nl>
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 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.
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