linux-kernel - Re: [PATCH] fix crash when using XFS on loopback

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Date:	Wed, 8 Jan 2014 13:59:30 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Pekka Enberg <penberg@...nel.org>
Cc:	Helge Deller <deller@....de>, Joonsoo Kim <iamjoonsoo.kim@....com>,
	Mikulas Patocka <mpatocka@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Christoph Lameter <cl@...ux.com>,
	LKML <linux-kernel@...r.kernel.org>, linux-parisc@...r.kernel.org
Subject: Re: [PATCH] fix crash when using XFS on loopback

On Wed, 8 Jan 2014 23:37:49 +0200 Pekka Enberg <penberg@...nel.org> wrote:

> The patch looks good to me but it probably should go through Andrew's tree.

yup.

page_mapping() will be called quite frequently, and adding a new
test-n-branch in there will be somewhat costly.  We might end up with a
better kernel if we were to instead revert 8456a648cf44f.  How useful
was that patch?
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