linux-ext4 - Re: xfstest failure: #68, with data=journal

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Message-ID: <20130322140628.GA2770@gmail.com>
Date:	Fri, 22 Mar 2013 22:06:28 +0800
From:	Zheng Liu <gnehzuil.liu@...il.com>
To:	Eric Whitney <enwlinux@...il.com>
Cc:	Theodore Ts'o <tytso@....edu>, linux-ext4@...r.kernel.org
Subject: Re: xfstest failure: #68, with data=journal

On Thu, Mar 21, 2013 at 06:12:18PM -0400, Eric Whitney wrote:
[snip]
> We were giving this one some attention in late February on the mailing list,
> but I don't think a full solution was found.  Here's a pointer to Jan Kara's
> analysis:
> 
> http://www.spinics.net/lists/linux-ext4/msg36858.html
> 
> Back then, it typically took a number of runs to see this problem.

What I was thinking about this problem is that ext4_file_dio_write() is
missing protection.  Look at this link, please [1].  But, after fixing
it, I still can hit a bug.  So I believe that more than one bug are
here.

1. http://www.spinics.net/lists/linux-ext4/msg37267.html

Regards,
                                                - Zheng
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