linux-kernel - Re: [PATCH] Move memory controller allocations to their own slabs

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Message-ID: <47D60EB1.8090109@linux.vnet.ibm.com>
Date:	Tue, 11 Mar 2008 10:16:41 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
CC:	Paul Menage <menage@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pavel Emelianov <xemul@...nvz.org>,
	Hugh Dickins <hugh@...itas.com>,
	Sudhir Kumar <skumar@...ux.vnet.ibm.com>,
	YAMAMOTO Takashi <yamamoto@...inux.co.jp>, lizf@...fujitsu.com,
	linux-kernel@...r.kernel.org, taka@...inux.co.jp,
	linux-mm@...ck.org, David Rientjes <rientjes@...gle.com>
Subject: Re: [PATCH] Move memory controller allocations to their own slabs

KAMEZAWA Hiroyuki wrote:
> On Tue, 11 Mar 2008 10:01:49 +0530
> Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:
> 
>> Move the memory controller data structures page_cgroup and
>> mem_cgroup_per_zone to their own slab caches. It saves space on the system,
>> allocations are not necessarily pushed to order of 2 and should provide
>> performance benefits. Users who disable the memory controller can also double
>> check that the memory controller is not allocating page_cgroup's.
>>
>> Signed-off-by: Balbir Singh <balbir@...ux.vnet.ibm.com>
>> ---
> I think using its own kmem_cache for mem_cgroup_per_zone is a bit overkill.

OK, sure, we can move back to the kmalloc.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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