KAMEZAWA Hiroyuki wrote:
> On Sat, 17 Nov 2007 23:21:22 +0530
> Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
> 
>> Thanks, this has been a long pending TODO. What is pending now on my
>> plate is re-organizing res_counter to become aware of the filesystem
>> hierarchy. I want to split out the LRU lists from the memory controller
>> and resource counters.
>>
> Does "file system hierarchy" here means "control group hierarchy" ?
> like

Yes, you are right

> =
> /cgroup/group_A/group_A_1
>             .  /group_A_2
>                /group_A_3
> (LRU(s) will be used for maintaining parent/child groups.)
> 

The LRU's will be shared, my vision is

		LRU
		^ ^
		| |
	Mem-----+ +----Mem


That two or more mem_cgroup's can refer to the same LRU list and have
their own resource counters. This setup will be used in the case
of a hierarchy, so that a child can share memory with its parent
and have it's own limit.

The mem_cgroup will basically then only contain a reference
to the LRU list.

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