linux-kernel - Re: [RFC 0/5] Memory controller soft limit introduction (v3)

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Date:	Mon, 30 Jun 2008 13:19:20 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	balbir@...ux.vnet.ibm.com
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	YAMAMOTO Takashi <yamamoto@...inux.co.jp>,
	Paul Menage <menage@...gle.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [RFC 0/5] Memory controller soft limit introduction (v3)

On Mon, 30 Jun 2008 09:30:50 +0530
Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:

> KAMEZAWA Hiroyuki wrote:
> > Hmm, that is the case where "share" works well. Why soft-limit ?
> > i/o conroller doesn't support share ? (I don' know sorry.)
> > 
> 
> Share is a proportional allocation of a resource. Typically that resource is
> soft-limits, but not necessarily. If we re-use resource counters, my expectation
> is that
> 
> A share implementation would under-neath use soft-limits.
> 
Hmm...I don't convice at this point. (because it's future problem)
At least, please find lock-less approach to check soft-limit.

Thanks,
-Kame

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