[dm-devel] Re: [PATCH 4/7] bio-cgroup: Split the cgroup memory subsystem into two parts

[Balbir Singh <balbir linux vnet ibm com>]

Ryo Tsuruta wrote:
> Hi Kamezawa-san,
> 
>> I'm now writing remove-lock-page-cgroup patches. it works well.
>> please wait for a while...
> 
> I'm looking forward to those patches.
> 
> By the way, I'm glad if memory-cgroup has a feature which can make a
> page_cgroup move between cgroups with small overhead. It makes
> bio-cgroup improve the accuracy of tracking down pages.

Page movement can be a very expensive operation and is proportional to the size
of the control group. I think movement should be an optional feature, if we ever
add it.

-- 
	Balbir