linux-kernel - Re: [RFC][PATCH 4/7 v2] memcg: use res_counter_uncharge_until in move

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Message-ID: <CABEgKgooq6EUFRC2-19QxACpGN5+EHn=OwPzk+tMBLy-pYM9XQ@mail.gmail.com>
Date:	Sat, 28 Apr 2012 08:59:08 +0900
From:	Hiroyuki Kamezawa <kamezawa.hiroyuki@...il.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"cgroups@...r.kernel.org" <cgroups@...r.kernel.org>,
	Michal Hocko <mhocko@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Glauber Costa <glommer@...allels.com>,
	Han Ying <yinghan@...gle.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC][PATCH 4/7 v2] memcg: use res_counter_uncharge_until in move_parent

On Sat, Apr 28, 2012 at 3:20 AM, Tejun Heo <tj@...nel.org> wrote:
> On Fri, Apr 27, 2012 at 02:54:58PM +0900, KAMEZAWA Hiroyuki wrote:
>> By using res_counter_uncharge_until(), we can avoid
>> unnecessary charging.
>>
>> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
>> ---
>>  mm/memcontrol.c |   63 ++++++++++++++++++++++++++++++++++++------------------
>>  1 files changed, 42 insertions(+), 21 deletions(-)
>>
>> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
>> index 613bb15..ed53d64 100644
>> --- a/mm/memcontrol.c
>> +++ b/mm/memcontrol.c
>> @@ -2420,6 +2420,24 @@ static void __mem_cgroup_cancel_charge(struct mem_cgroup *memcg,
>>  }
>>
>>  /*
>> + * Cancel chages in this cgroup....doesn't propagates to parent cgroup.
>
>             ^typo                                     ^ unnecessary s

Ya, thanks. I'll fix it.

-Kame
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