linux-kernel - Re: [PATCH] mm: fix page_mkclean

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Date:	Thu, 28 Dec 2006 20:19:46 +0100
From:	Guillaume Chazarain <guichaz@...oo.fr>
To:	Linus Torvalds <torvalds@...l.org>
CC:	David Miller <davem@...emloft.net>, ranma@...edrich.de,
	gordonfarquharson@...il.com, tbm@...ius.com,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>, andrei.popa@...eo.ro,
	Andrew Morton <akpm@...l.org>, hugh@...itas.com,
	nickpiggin@...oo.com.au, arjan@...radead.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Chen Kenneth W <kenneth.w.chen@...el.com>
Subject: Re: [PATCH] mm: fix page_mkclean_one

Guillaume Chazarain a écrit :
> I get this kind of corruption: 
> http://guichaz.free.fr/linux-bug/corruption.png

Actually in qemu, I get three different behaviours:
- no corruption at all : with linux-2.4
- corruption only on the first chunks: before  [PATCH] mm: balance dirty 
pages as identified by Kenneth
- corruption of all chunks: after the balance dirty pages patch

Bisecting in linux-2.5 land I found 
http://kernel.org/pub/linux/kernel/people/akpm/patches/2.5/2.5.66/2.5.66-mm3/broken-out/fadvise-flush-data.patch 
to cause the corruption for me.

The attached patch fixes the corruption for me.

-- 
Guillaume


View attachment "fadvise-dontneed.patch" of type "text/x-patch" (493 bytes)