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List:       linux-ia64
Subject:    Re: system hang on latest git
From:       Olof Johansson <olof () lixom ! net>
Date:       2008-01-29 21:56:49
Message-ID: 20080129215648.GB28997 () lixom ! net
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On Tue, Jan 29, 2008 at 10:38:52PM +0100, Jens Axboe wrote:
> Please try this.

[...]

> The latter is the problem, but since the queue lock is also held before
> doing the double_spin_lock(), we get into even more trouble. The locking
> hierarchy is fine, it's always queue lock -> io context locks, so the
> above patch should be all that is needed to fix this.
> 
> My initial analysis was wrong, that's all :/

Yep, looks much better now.

Tested-by: Olof Johansson <olof@lixom.net>


-Olof
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