linux-kernel - Re: [patch 06/10] affs: Convert semaphores to mutexes

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Message-ID: <20100129223627.GB18752@infradead.org>
Date:	Fri, 29 Jan 2010 17:36:27 -0500
From:	Christoph Hellwig <hch@...radead.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>, Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [patch 06/10] affs: Convert semaphores to mutexes

On Fri, Jan 29, 2010 at 08:38:55PM -0000, Thomas Gleixner wrote:
> These semaphores are plain mutexes. Convert them to struct mutex.

Looks good.

> Map affs_[un]lock_dir() to affs_[un]lock_ext() instead of the "#define
> i_hash_lock i_ext_lock" magic.

I'm not sure which of the remapping tricks is the worth one..

Btw, if we don't want lockdep to complain we'll need annotations on
affs_lock_dir as it's taken both on parent and child.

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