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

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Date:	Mon, 12 Oct 2009 01:36:18 +0200
From:	Frans Pop <elendil@...net.nl>
To:	Mel Gorman <mel@....ul.ie>
Cc:	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>,
	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 Monday 12 October 2009, Frans Pop wrote:
> BISECTION of akpm (mm) MERGE
> ----------------------------
> So here I went looking for "where does the test start failing on the
> first try". Again, I was unable to narrow it down to a single commit.

Note that this merge is based on mainline at v2.6.30-5415-g03347e2, so a
number of merges "drop out" once I  started bisecting into this merge. But
that point is still *after* the net-next-2.6 merge, which is all that's
really relevant for this issue.

> For a good overview of the area, use 'gitk f83b1e61..517d0869'.
>
> v2.6.30-5466-ga1dd268   mm: use alloc_pages_exact in alloc_large_system_hash
>	2.3     +- 
> v2.6.30-5478-ge9bb35d   mm: setup_per_zone_inactive_ratio - fix comment and..
>	2.5     +- 
> v2.6.30-5486-g35282a2   migration: only migrate_prep() once per move_pages()
>	2.6     -|+|-   not quite conclusive... 
> v2.6.30-5492-gbce7394   page-allocator: reset wmark_min and inactive ratio..
>	2.4     -|- 
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