linux-kernel - Re: [2.6.26-rc7] shrink_icache from pagefault locking (nee: nfsd hangs for a few sec)...

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Message-ID: <20080623072227.GB11986@infradead.org>
Date:	Mon, 23 Jun 2008 03:22:27 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Mel Gorman <mel@....ul.ie>
Cc:	Daniel J Blueman <daniel.blueman@...il.com>,
	Christoph Lameter <clameter@....com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Alexander Beregalov <a.beregalov@...il.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>, xfs@....sgi.com
Subject: Re: [2.6.26-rc7] shrink_icache from pagefault locking (nee: nfsd
	hangs for a few sec)...

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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