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Subject: Re: reiserfs locking (v2)
From: Peter Zijlstra <peterz@infradead.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>, Jan Kara <jack@suse.cz>,
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       Jeff Mahoney <jeffm@jeffreymahoney.com>
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Date: Fri, 02 Jul 2010 15:44:27 +0200
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On Fri, 2010-07-02 at 15:12 +0200, Frederic Weisbecker wrote:
> 
> I don't think the deadlock can really happen, as we can't release the directory while
> we are reading it. Plus I guess we can't mmap a directory (someone correct me if
> I'm wrong).
> 

> Is there someone who could give me a hint here?

If its purely directories you can try and give directory inode locks a
different class.