linux-kernel - Re: [PATCH -V9 14/15] hugetlb/cgroup: migrate hugetlb cgroup info from oldpage to new page during migration

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Message-ID: <4FD964DD.6060802@jp.fujitsu.com>
Date:	Thu, 14 Jun 2012 13:13:17 +0900
From:	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
CC:	linux-mm@...ck.org, dhillf@...il.com, rientjes@...gle.com,
	mhocko@...e.cz, akpm@...ux-foundation.org, hannes@...xchg.org,
	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: [PATCH -V9 14/15] hugetlb/cgroup: migrate hugetlb cgroup info
 from oldpage to new page during migration

(2012/06/13 19:27), Aneesh Kumar K.V wrote:
> From: "Aneesh Kumar K.V"<aneesh.kumar@...ux.vnet.ibm.com>
> 
> With HugeTLB pages, hugetlb cgroup is uncharged in compound page destructor.  Since
> we are holding a hugepage reference, we can be sure that old page won't
> get uncharged till the last put_page().
> 
> Signed-off-by: Aneesh Kumar K.V<aneesh.kumar@...ux.vnet.ibm.com>

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

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