netdev - Re: [PATCH v2 6/9] per-cgroup tcp buffers control

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Message-Id: <20110912193117.d8f360f9.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Mon, 12 Sep 2011 19:31:17 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Glauber Costa <glommer@...allels.com>
Cc:	<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
	<containers@...ts.osdl.org>, <netdev@...r.kernel.org>,
	<xemul@...allels.com>, "David S. Miller" <davem@...emloft.net>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [PATCH v2 6/9] per-cgroup tcp buffers control

On Fri, 9 Sep 2011 09:01:32 -0300
Glauber Costa <glommer@...allels.com> wrote:

> On 09/09/2011 12:12 AM, KAMEZAWA Hiroyuki wrote:
> > On Wed,  7 Sep 2011 01:23:16 -0300
> > Glauber Costa<glommer@...allels.com>  wrote:
> >
> >> With all the infrastructure in place, this patch implements
> >> per-cgroup control for tcp memory pressure handling.
> >>
> >> Signed-off-by: Glauber Costa<glommer@...allels.com>
> >> CC: David S. Miller<davem@...emloft.net>
> >> CC: Hiroyouki Kamezawa<kamezawa.hiroyu@...fujitsu.com>
> >> CC: Eric W. Biederman<ebiederm@...ssion.com>
> >
> > Hmm, then, kmem_cgroup.c is just a caller of plugins implemented
> > by other components ?
> 
> Kame,
> 
> Refer to my discussion with Greg. How would you feel about it being 
> accounted to a single "kernel memory" limit in memcg?
> 

Hmm, it's argued that 'cgroup is hard to use, it's difficult!!!'.

Then, if implementation is clean, I think it may be good to add
kmem limit to memcg.

Your and Greg's idea is to have

	memory.kmem_limit_in_bytes 
?

Thanks,
-Kame

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