linux-kernel - Re: 2.6.26-rc5-mm2: OOM with 1G free swap

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Message-Id: <200806112344.17627.nickpiggin@yahoo.com.au>
Date:	Wed, 11 Jun 2008 23:44:17 +1000
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	Rik van Riel <riel@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	linux-kernel@...r.kernel.org, kernel-testers@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: 2.6.26-rc5-mm2: OOM with 1G free swap

On Wednesday 11 June 2008 22:57, Rik van Riel wrote:
> On Tue, 10 Jun 2008 23:27:05 -0700
>
> Andrew Morton <akpm@...ux-foundation.org> wrote:
> > Well I assume that Rik ran LTP.  Perhaps a merge problem.
> >
> > Zero pages on active_anon and inactive_anon.  I suspect we lost those
> > pages.
>
> Known problem.  I fixed this one in the updates I sent you last night.

Oh good. Yeah I was just running some tests, and got as far as verifying
that the upstream kernel + lockless pagecache patches reclaims file pages
like a dream, but -mm2 sucks very badly at it.

During which, I also did find by inspection a little problem with my
speculative references patch. Andrew please apply this fix.


View attachment "mm-speculative-page-references-hugh-fix3.patch" of type "text/x-diff" (1528 bytes)