linux-kernel - Re: [PATCH 0/6] mempolicy memory corruption fixlet

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Message-ID: <CAHGf_=r_ZMKNx+VriO6822otF=U_huj7uxoc5GM-2DEVryKxNQ@mail.gmail.com>
Date:	Wed, 30 May 2012 16:16:26 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Christoph Lameter <cl@...ux.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Andrew Morton <akpm@...gle.com>, Dave Jones <davej@...hat.com>,
	Mel Gorman <mgorman@...e.de>, stable@...r.kernel.org,
	hughd@...gle.com, sivanich@....com
Subject: Re: [PATCH 0/6] mempolicy memory corruption fixlet

On Wed, May 30, 2012 at 4:10 PM, Andi Kleen <andi@...stfloor.org> wrote:
>> Yes, that's right direction, I think. Currently, shmem_set_policy() can't handle
>> nonlinear mapping.
>
> I've been mulling for some time to just remove non linear mappings.
> AFAIK they were only useful on 32bit and are obsolete and could be
> emulated with VMAs instead.

I agree. It is only userful on 32bit and current enterprise users don't use
32bit anymore. So, I don't think emulated by vmas cause user visible issue.
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