linux-kernel - Re: [-mm patch] lockdep: possible deadlock in sysfs

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Date:	Fri, 5 Jan 2007 17:53:04 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	Frederik Deweerdt <deweerdt@...e.fr>
Cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	greg@...ah.com, maneesh@...ibm.com, oliver@...kum.name
Subject: Re: [-mm patch] lockdep: possible deadlock in sysfs

Am Freitag, 5. Januar 2007 17:42 schrieb Frederik Deweerdt:
> On Fri, Jan 05, 2007 at 04:13:25PM +0100, Oliver Neukum wrote:
> > Am Freitag, 5. Januar 2007 13:16 schrieb Frederik Deweerdt:
> > > On Thu, Jan 04, 2007 at 10:02:00PM -0800, Andrew Morton wrote:
> > > > 
> > > > 	ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20-rc3/2.6.20-rc3-mm1/
> > > > 
> > are you sure there's a code path that takes these locks in the reverse order?
> > I've looked through the code twice and not found any. It doesn't make much
> > sense to first lock the file and afterwards the directory.
> You're right, an annotation should be enough, what do you think?

I agree.

	Regards
		Oliver
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