From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [BUG] ext3: cannot unfreeze a filesystem due to a deadlock
Date: Wed, 7 Sep 2011 12:50:17 -0400
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 <20110907064006.GA16042@infradead.org>
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Cc: Christoph Hellwig <hch@infradead.org>,
	Masayoshi MIZUMA <m.mizuma@jp.fujitsu.com>,
	Jan Kara <jack@suse.cz>,
	Andrew Morton <akpm@linux-foundation.org>,
	Andreas Dilger <adilger.kernel@dilger.ca>,
	linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org
To: Greg Freemyer <greg.freemyer@gmail.com>
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On Wed, Sep 07, 2011 at 12:45:34PM -0400, Greg Freemyer wrote:
> > Can you add this testcase to xfstests?
> 
> Christoph,
> 
> Isn't that just a matter of extending test 068 to ext4

If you have recent enough xfsprogs that allow the freeze command
for foreign filesystems that might work.