linux-kernel - Re: [RFC][1/3] Add user interface for virtual address space control (v2)

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Message-Id: <20080327181404.1e95a725.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Thu, 27 Mar 2008 18:14:04 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Balbir Singh <balbir@...ux.vnet.ibm.com>
Cc:	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>,
	Paul Menage <menage@...gle.com>, lizf@...fujitsu.com,
	linux-kernel@...r.kernel.org, taka@...inux.co.jp,
	linux-mm@...ck.org, David Rientjes <rientjes@...gle.com>
Subject: Re: [RFC][1/3] Add user interface for virtual address space control
 (v2)

On Thu, 27 Mar 2008 00:20:06 +0530
Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:

> 
> 
> Add as_usage_in_bytes and as_limit_in_bytes interfaces. These provide
> control over the total address space that the processes combined together
> in the cgroup can grow upto. This functionality is analogous to
> the RLIMIT_AS function of the getrlimit(2) and setrlimit(2) calls.
> A as_res resource counter is added to the mem_cgroup structure. The
> as_res counter handles all the accounting associated with the virtual
> address space accounting and control of cgroups.
> 
> Signed-off-by: Balbir Singh <balbir@...ux.vnet.ibm.com>

I wonder that it's better to create "rlimit cgroup" rather than enhancing
memory controller. (But I have no strong opinion.)
How do you think ?

Thanks,
-Kame

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