linux-kernel - Re: [Intel-gfx] [PATCH] drm/i915: Selectively enable self-reclaim

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Message-Id: <89khjo$fr177d@orsmga002.jf.intel.com>
Date:	Wed, 30 Jun 2010 08:05:08 +0100
From:	Chris Wilson <chris@...is-wilson.co.uk>
To:	Dave Airlie <airlied@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	earny@...4u.de, Roman Jarosz <kedgedev@...il.com>,
	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	jcnengel@...glemail.com,
	"A. Boulan" <arnaud.boulan@...ertysurf.fr>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Pekka Enberg <penberg@...helsinki.fi>,
	A Rojas <nqn1976list@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	rientjes@...gle.com, michael@...nelt.co.at, stable@...nel.org
Subject: Re: [Intel-gfx] [PATCH] drm/i915: Selectively enable self-reclaim

On Wed, 30 Jun 2010 16:54:07 +1000, Dave Airlie <airlied@...il.com> wrote:
> Chris's patch has been reported to cause a regression in hibernate,

Reviewing the patch again, we no longer set the default gfpmask on the
inode to contain NORETRY and instead add the NORETRY at the one spot in
the code where we are trying to do a large allocation and our shrinker
would be prevented from running (due to contention on struct_mutex).

I do not know how this causes memory corruption across hibernate and would
appreciate any insights.
-- 
Chris Wilson, Intel Open Source Technology Centre
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