linux-kernel - RE: [PATCH] NOMMU: Pages allocated to a ramfs inode's pagecache may get wrongly discarded

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Message-ID: <5DC5324CE00E4D4494EE5F031E354E9501CE9C0F@BUDMLVEM03.e2k.ad.ge.com>
Date:	Thu, 12 Mar 2009 08:12:44 +0100
From:	"Berkhan, Enrik (GE Infra, Oil & Gas)" <enrik.berkhan@...com>
To:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"David Howells" <dhowells@...hat.com>
Cc:	<torvalds@...ux-foundation.org>, <peterz@...radead.org>,
	<dhowells@...hat.com>, <uclinux-dev@...inux.org>,
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] NOMMU: Pages allocated to a ramfs inode's pagecache may get wrongly discarded

Andrew Morton wrote:
> On Wed, 11 Mar 2009 15:30:35 +0000
> David Howells <dhowells@...hat.com> wrote:
>> From: Enrik Berkhan <Enrik.Berkhan@...com>
>> 
>> The solution is to mark the pages dirty at the point of allocation by
>> the truncation code.
> 
> Was there a specific reason for using the low-level SetPageDirty()?

No, no specific reason. It was just my first try of a fix after spotting 
the problem. After a short discussion with David, we decided to wait for 
others' comments on using the low-/high-level approach.

Enrik
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