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

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Message-ID: <Pine.LNX.4.64.0612280906270.4473@woody.osdl.org>
Date:	Thu, 28 Dec 2006 09:08:26 -0800 (PST)
From:	Linus Torvalds <torvalds@...l.org>
To:	Gordon Farquharson <gordonfarquharson@...il.com>
cc:	David Miller <davem@...emloft.net>, ranma@...edrich.de,
	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>
Subject: Re: [PATCH] mm: fix page_mkclean_one



On Wed, 27 Dec 2006, Gordon Farquharson wrote:
> 
> 100kB and 200kB files always succeed on the ARM system. 400kB and
> larger always seem to fail.

Oh, wow. Yeah, I've just repressed how tiny 32MB is. And especially if you 
lowered the /proc/sys/vm/dirty_ratio to a smaller percentage, I guess 
400kB should be enough to cause writeback.

Ugh. I tested a 128MB machine a few weeks ago, and found it painful.

		Linus
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