linux-kernel - Re: [PATCH] nfsd: lockdep annotation

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Message-Id: <1156404952.3014.0.camel@laptopd505.fenrus.org>
Date:	Thu, 24 Aug 2006 09:35:51 +0200
From:	Arjan van de Ven <arjan@...radead.org>
To:	Neil Brown <neilb@...e.de>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH] nfsd: lockdep annotation

On Thu, 2006-08-24 at 16:12 +1000, Neil Brown wrote:
> On Wednesday August 23, a.p.zijlstra@...llo.nl wrote:
> > Hi,
> > 
> > while doing a kernel make modules_install install over an NFS mount.
> > (
> > 
> > =============================================
> > [ INFO: possible recursive locking detected ]
> > ---------------------------------------------
> 
> Thanks for the patch.  I had a patch to fix this in my queue, but I
> just hadn't got around to submitting it yet :-(
> Never mind, we'll go with yours and Andrew already has it.
> 
> I had flags the fh_lock in nfsd_setattr a I_MUTEX_CHILD which you
> didn't however I see that isn't needed (Why do we have PARENT and
> CHILD and NORMAL.... you would think that any two would do ??)

for cross directory renames 3 are needed ;(


-- 
if you want to mail me at work (you don't), use arjan (at) linux.intel.com

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