linux-kernel - Re: [PATCH 1/7] hugetlb: add missing unlock in avoidcopy path in hugetlb

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Message-ID: <20100702083143.GC12221@basil.fritz.box>
Date:	Fri, 2 Jul 2010 10:31:43 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mel@....ul.ie>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Jun'ichi Nomura <j-nomura@...jp.nec.com>,
	linux-mm <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/7] hugetlb: add missing unlock in avoidcopy path in
 hugetlb_cow()

On Fri, Jul 02, 2010 at 02:47:20PM +0900, Naoya Horiguchi wrote:
> This patch fixes possible deadlock in hugepage lock_page()
> by adding missing unlock_page().
> 
> libhugetlbfs test will hit this bug when the next patch in this
> patchset ("hugetlb, HWPOISON: move PG_HWPoison bit check") is applied.

This looks like a general bug fix that should be merged ASAP? 

Or do you think this cannot be hit at all without the other patches?

-Andi
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