linux-kernel - Re: [-mm PATCH 8/9] Memory controller add switch to control what type of pages to limit (v4)

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Date:	Mon, 13 Aug 2007 11:47:03 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	YAMAMOTO Takashi <yamamoto@...inux.co.jp>
CC:	akpm@...ux-foundation.org, a.p.zijlstra@...llo.nl,
	dhaval@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, ebiederm@...ssion.com,
	containers@...ts.osdl.org, menage@...gle.com, xemul@...nvz.org
Subject: Re: [-mm PATCH 8/9] Memory controller add switch to control what
 type of pages to limit (v4)

YAMAMOTO Takashi wrote:
>> YAMAMOTO Takashi wrote:
>>>> Choose if we want cached pages to be accounted or not. By default both
>>>> are accounted for. A new set of tunables are added.
>>>>
>>>> echo -n 1 > mem_control_type
>>>>
>>>> switches the accounting to account for only mapped pages
>>>>
>>>> echo -n 2 > mem_control_type
>>>>
>>>> switches the behaviour back
>>> MEM_CONTAINER_TYPE_ALL is 3, not 2.
>>>
>> Thanks, I'll fix the comment on the top.
>>
>>> YAMAMOTO Takashi
>>>
>>>> +enum {
>>>> +	MEM_CONTAINER_TYPE_UNSPEC = 0,
>>>> +	MEM_CONTAINER_TYPE_MAPPED,
>>>> +	MEM_CONTAINER_TYPE_CACHED,
> 
> what's MEM_CONTAINER_TYPE_CACHED, btw?
> it seems that nothing distinguishes it from MEM_CONTAINER_TYPE_MAPPED.
> 

The important types are currently MEM_CONTAINER_TYPE_MAPPED and MEM_CONTAINER_TYPE_ALL.
I added the types for future use (may be for finer accounting of types, later).

> YAMAMOTO Takashi


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