linux-kernel - Re: 2.6.19 file content corruption on ext3

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Date:	Mon, 18 Dec 2006 17:34:01 -0500
From:	Gene Heskett <gene.heskett@...izon.net>
To:	linux-kernel@...r.kernel.org
Cc:	Linus Torvalds <torvalds@...l.org>,
	Andrei Popa <andrei.popa@...eo.ro>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrew Morton <akpm@...l.org>, Hugh Dickins <hugh@...itas.com>,
	Florian Weimer <fw@...eb.enyo.de>,
	Marc Haber <mh+linux-kernel@...schlus.de>,
	Martin Michlmayr <tbm@...ius.com>
Subject: Re: 2.6.19 file content corruption on ext3

On Monday 18 December 2006 15:41, Linus Torvalds wrote:
>On Mon, 18 Dec 2006, Linus Torvalds wrote:
>> But at the same time, it's interesting that it still happens when we
>> try to re-add the dirty bit. That would tell me that it's one of two
>> cases:
>
>Forget that. There's a third case, which is much more likely:
>
> - Andrew's patch had a ", 1" where it _should_ have had a ", 0".
>
>This should be fairly easy to test: just change every single ", 1" case
> in the patch to ", 0".
>
>The only case that _definitely_ would want ",1" is actually the case
> that already calls page_mkclean() directly: clear_page_dirty_for_io().
> So no other ", 1" is valid, and that one that needed it already avoided
> even calling the "test_clear_page_dirty()" function, because it did it
> all by hand.
>
What about the mm/rmap.c one liner, in or out?

Thanks.

>What happens for you in that case?
>
>		Linus
>-
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-- 
Cheers, Gene
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