From: david@lang.hm
To: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>,
Christoph Lameter <cl@linux.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Andrew Morton <akpm@google.com>, Dave Jones <davej@redhat.com>,
Mel Gorman <mgorman@suse.de>,
stable@vger.kernel.org, hughd@google.com, sivanich@sgi.com
Subject: Re: [PATCH 0/6] mempolicy memory corruption fixlet
Date: Thu, 31 May 2012 17:45:31 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.02.1205311744280.17976@asgard.lang.hm> (raw)
In-Reply-To: <CAHGf_=r_ZMKNx+VriO6822otF=U_huj7uxoc5GM-2DEVryKxNQ@mail.gmail.com>
On Wed, 30 May 2012, KOSAKI Motohiro wrote:
> On Wed, May 30, 2012 at 4:10 PM, Andi Kleen <andi@firstfloor.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.
I wish this was true, there are a lot of systems out there still running
32 bit linux, even on 64 bit capible hardware. This is especially true in
enterprises where they have either homegrown or proprietary software that
isn't 64 bit clean.
David Lang
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next prev parent reply other threads:[~2012-06-01 0:46 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-30 9:02 kosaki.motohiro
2012-05-30 9:02 ` [PATCH 1/6] Revert "mm: mempolicy: Let vma_merge and vma_split handle vma->vm_policy linkages" kosaki.motohiro
2012-05-30 19:17 ` Christoph Lameter
2012-05-30 19:39 ` KOSAKI Motohiro
2012-05-30 19:44 ` Christoph Lameter
2012-05-31 6:49 ` KOSAKI Motohiro
2012-05-30 9:02 ` [PATCH 2/6] mempolicy: Kill all mempolicy sharing kosaki.motohiro
2012-05-30 19:41 ` Christoph Lameter
2012-05-30 19:46 ` KOSAKI Motohiro
2012-05-30 19:48 ` Andi Kleen
2012-05-30 20:31 ` Andi Kleen
2012-05-30 20:58 ` KOSAKI Motohiro
2012-05-30 9:02 ` [PATCH 3/6] mempolicy: fix a race in shared_policy_replace() kosaki.motohiro
2012-05-30 9:02 ` [PATCH 4/6] mempolicy: fix refcount leak in mpol_set_shared_policy() kosaki.motohiro
2012-05-30 9:02 ` [PATCH 5/6] mempolicy: fix a memory corruption by refcount imbalance in alloc_pages_vma() kosaki.motohiro
2012-05-30 20:37 ` Andi Kleen
2012-05-30 9:02 ` [PATCH 6/6] MAINTAINERS: Added MEMPOLICY entry kosaki.motohiro
2012-05-30 19:27 ` Christoph Lameter
2012-05-30 18:26 ` [PATCH 0/6] mempolicy memory corruption fixlet Linus Torvalds
2012-05-30 18:34 ` Christoph Lameter
2012-05-30 18:46 ` Andi Kleen
2012-05-30 18:50 ` Christoph Lameter
2012-05-30 19:32 ` Andi Kleen
2012-05-30 19:42 ` Christoph Lameter
2012-05-30 19:52 ` Andi Kleen
2012-05-30 20:00 ` KOSAKI Motohiro
2012-05-30 21:22 ` Ben Hutchings
2012-05-30 21:25 ` KOSAKI Motohiro
2012-05-30 19:54 ` KOSAKI Motohiro
2012-05-30 20:10 ` Andi Kleen
2012-05-30 20:16 ` KOSAKI Motohiro
2012-06-01 0:45 ` david [this message]
2012-06-01 13:51 ` Christoph Lameter
2012-06-01 19:31 ` david
2012-06-01 19:37 ` KOSAKI Motohiro
2012-06-05 19:02 ` Linus Torvalds
2012-06-05 19:17 ` Andrew Morton
2012-06-06 19:10 ` KOSAKI Motohiro
2012-05-30 19:03 ` Linus Torvalds
2012-05-30 20:10 ` KOSAKI Motohiro
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