linux-kernel - Re: [PATCH -V4 05/10] hugetlb: add charge/uncharge calls for HugeTLB alloc/free

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Message-ID: <87sjgs1v6x.fsf@skywalker.in.ibm.com>
Date:	Wed, 28 Mar 2012 23:09:34 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	linux-mm@...ck.org, mgorman@...e.de,
	kamezawa.hiroyu@...fujitsu.com, dhillf@...il.com,
	aarcange@...hat.com, akpm@...ux-foundation.org, hannes@...xchg.org,
	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: [PATCH -V4 05/10] hugetlb: add charge/uncharge calls for HugeTLB alloc/free

Michal Hocko <mhocko@...e.cz> writes:

> On Fri 16-03-12 23:09:25, Aneesh Kumar K.V wrote:
>> From: "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
>> 
>> This adds necessary charge/uncharge calls in the HugeTLB code
>
> This begs for more description...
> Other than that it looks correct.
>

Updated as below

    hugetlb: add charge/uncharge calls for HugeTLB alloc/free
    
    This adds necessary charge/uncharge calls in the HugeTLB code. We do
    memcg charge in page alloc and uncharge in compound page destructor.
    We also need to ignore HugeTLB pages in __mem_cgroup_uncharge_common
    because that get called from delete_from_page_cache
    
-aneesh

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