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Re: [2.6.26-rc7] shrink_icache from pagefault locking (nee: nfsd hangs f

To: Mel Gorman <mel@xxxxxxxxx>
Subject: Re: [2.6.26-rc7] shrink_icache from pagefault locking (nee: nfsd hangs for a few sec)...
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 23 Jun 2008 03:22:27 -0400
Cc: Daniel J Blueman <daniel.blueman@xxxxxxxxx>, Christoph Lameter <clameter@xxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Alexander Beregalov <a.beregalov@xxxxxxxxx>, Linux Kernel <linux-kernel@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <20080623002415.GB21597@xxxxxxxxx>
References: <6278d2220806220256g674304ectb945c14e7e09fede@xxxxxxxxxxxxxx> <6278d2220806220258p28de00c1x615ad7b2f708e3f8@xxxxxxxxxxxxxx> <20080622221930.GA11558@disturbed> <20080623002415.GB21597@xxxxxxxxx>
Sender: xfs-bounce@xxxxxxxxxxx
User-agent: Mutt/1.5.18 (2008-05-17)
On Mon, Jun 23, 2008 at 01:24:15AM +0100, Mel Gorman wrote:
> In that case, have you any theory as to why this circular dependency is
> being reported now but wasn't before 2.6.26-rc1? I'm beginning to wonder
> if the bisecting fingering the zonelist modifiation is just a
> co-incidence.

I've seen this traces since lockdep was added when running xfsqa.


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