linux-kernel - Re: torrent hash failures since 3.9.0-rc1

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Message-ID: <20130312064810.GA426@x4>
Date:	Tue, 12 Mar 2013 07:48:10 +0100
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	Theodore Ts'o <tytso@....edu>, Dave Jones <davej@...hat.com>,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
	Zheng Liu <wenqing.lz@...bao.com>
Subject: Re: torrent hash failures since 3.9.0-rc1

On 2013.03.12 at 14:44 +0800, Zheng Liu wrote:
> On Tue, Mar 12, 2013 at 07:16:24AM +0100, Markus Trippelsdorf wrote:
> > On 2013.03.11 at 23:30 -0400, Theodore Ts'o wrote:
> > > On Tue, Mar 12, 2013 at 11:00:58AM +0800, Zheng Liu wrote:
> > > > 
> > > > Thanks for reporting this problem.  My deepest apologies.
> > > > 
> > > > As Ted suggested, could you please try to use ext4 git tree?  I want to
> > > > make sure whether this bug has been fixed by my lastest patch series or
> > > > not.
> > > 
> > > It's definitely worth a try to compile the master branch of the ext4
> > > tree and see if it reproduces or not.
> > 
> > I cannot reproduce the issue on top of "ext4.git dev", so fortunately
> > the problem seems to be already fixed there.
> > Thanks.
> 
> Great!  Thanks for the confirmation.
> 
> > 
> > Do you guys have a hunch which commit is the actual fix? 
> > (Maybe I will "bisect" it later today.)
> 
> I think maybe this two commits can fix it, but I am not sure which one
> is the actual fix (I guess it is the former one, ;-) ).  Please try it
> if you could bisect it.  Thanks in advance.
> 
>  * 079d7667af20876a59a1d9b0d4d1e15dcf17fa34
>    ext4: fix wrong the number of the allocated blocks in
> ext4_split_extent()

Your guess was right. The commit above is the actual fix.

-- 
Markus
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