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Date: Fri, 17 Jun 2011 13:04:34 -0700
From: Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH] mm, memory-failure: Fix spinlock vs mutex order
Message-ID: <20110617200434.GC28954@tassilo.jf.intel.com>
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To: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>, Hugh Dickins <hughd@google.com>, Tim Chen <tim.c.chen@linux.intel.com>, Shaohua Li <shaohua.li@intel.com>, Andrew Morton <akpm@linux-foundation.org>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, David Miller <davem@davemloft.net>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Russell King <rmk@arm.linux.org.uk>, Paul Mundt <lethal@linux-sh.org>, Jeff Dike <jdike@addtoit.com>, Richard Weinberger <richard@nod.at>, "Luck, Tony" <tony.luck@intel.com>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, Mel Gorman <mel@csn.ul.ie>, Nick Piggin <npiggin@kernel.dk>, Namhyung Kim <namhyung@gmail.com>, "Shi, Alex" <alex.shi@intel.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linux-mm@kvack.org" <linux-mm@kvack.org>, "Rafael J. Wysocki" <rjw@sisk.pl>

> I thought about maybe using rcu, but then thought the thing is probably
> wanting to exclude new tasks as it wants to kill all mm users.

Probably both would work.

Looks good to me.  hwpoison patches are usually directly merged by Andrew 
these days.

Acked-by: Andi Kleen <ak@linux.intel.com>

-Andi

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