From: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
To: Christoph Lameter <cl@linux.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Andrew Morton <akpm@google.com>, Dave Jones <davej@redhat.com>,
Mel Gorman <mgorman@suse.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
stable@vger.kernel.org, hughd@google.com,
Andrew Morton <akpm@linux-foundation.org>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Subject: Re: [PATCH 1/6] Revert "mm: mempolicy: Let vma_merge and vma_split handle vma->vm_policy linkages"
Date: Thu, 31 May 2012 02:49:58 -0400 [thread overview]
Message-ID: <4FC71496.8050707@gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1205301414020.31768@router.home>
(5/30/12 3:17 PM), Christoph Lameter wrote:
> On Wed, 30 May 2012, kosaki.motohiro@gmail.com wrote:
>
>> From: KOSAKI Motohiro<kosaki.motohiro@gmail.com>
>>
>> commit 05f144a0d5 removed vma->vm_policy updates code and it is a purpose of
>> mbind_range(). Now, mbind_range() is virtually no-op. no-op function don't
>> makes any bugs, I agree. but maybe it is not right fix.
>
> I dont really understand the changelog. But to restore the policy_vma() is
> the right thing to do since there are potential multiple use cases where
> we want to apply a policy to a vma.
>
> Proposed new changelog:
>
> Commit 05f144a0d5 folded policy_vma() into mbind_range(). There are
> other use cases of policy_vma(*) though and so revert a piece of
> that commit in order to have a policy_vma() function again.
sorry, I overlooked this. Commit 05f144a0d5 don't work neither regular vma
nor shmem vma. thus I can't take this proposal. sorry.
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next prev parent reply other threads:[~2012-05-31 6:50 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-30 9:02 [PATCH 0/6] mempolicy memory corruption fixlet 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 [this message]
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
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
-- strict thread matches above, loose matches on Subject: below --
2012-06-11 9:17 [PATCH 0/6][resend] " kosaki.motohiro
2012-06-11 9:17 ` [PATCH 1/6] Revert "mm: mempolicy: Let vma_merge and vma_split handle vma->vm_policy linkages" kosaki.motohiro
2012-06-11 14:43 ` Christoph Lameter
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