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

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Message-id: <200612181024.18829.gene.heskett@verizon.net>
Date:	Mon, 18 Dec 2006 10:24:18 -0500
From:	Gene Heskett <gene.heskett@...izon.net>
To:	linux-kernel@...r.kernel.org, andrei.popa@...eo.ro
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrew Morton <akpm@...l.org>,
	Linus Torvalds <torvalds@...l.org>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	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 05:49, Andrei Popa wrote:
>> OK, I'll try this on a ext3 box. BTW, what data mode are you using
>> ext3 in?
>
>ordered
>
>> Also, for testings sake, could you give this a go:
>> It's a total hack but I guess worth testing.
>>
>> ---
>>  mm/rmap.c |    2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> Index: linux-2.6-git/mm/rmap.c
>> ===================================================================
>> --- linux-2.6-git.orig/mm/rmap.c	2006-12-18 11:06:29.000000000 +0100
>> +++ linux-2.6-git/mm/rmap.c	2006-12-18 11:07:16.000000000 +0100
>> @@ -448,7 +448,7 @@ static int page_mkclean_one(struct page
>>  		goto unlock;
>>
>>  	entry = ptep_get_and_clear(mm, address, pte);
>> -	entry = pte_mkclean(entry);
>> +	/* entry = pte_mkclean(entry); */
>>  	entry = pte_wrprotect(entry);
>>  	ptep_establish(vma, address, pte, entry);
>>  	lazy_mmu_prot_update(entry);
>
>with latest git and this patch there is no corruption !
>
I've not run a torrent app here recently.  Should this patch be applied to 
a plain 2.6-20-rc1 before I do run azureas or similar apps?
>
>
>-
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-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
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