linux-kernel - Re: [mm] [PATCH 1/4] Memory cgroup hierarchy documentation

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Message-ID: <6599ad830811032225w229d3a29k17b9a38cb76a521f@mail.gmail.com>
Date:	Mon, 3 Nov 2008 22:25:47 -0800
From:	Paul Menage <menage@...gle.com>
To:	Balbir Singh <balbir@...ux.vnet.ibm.com>
Cc:	linux-mm@...ck.org, YAMAMOTO Takashi <yamamoto@...inux.co.jp>,
	lizf@...fujitsu.com, linux-kernel@...r.kernel.org,
	Nick Piggin <nickpiggin@...oo.com.au>,
	David Rientjes <rientjes@...gle.com>,
	Pavel Emelianov <xemul@...nvz.org>,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [mm] [PATCH 1/4] Memory cgroup hierarchy documentation

On Sat, Nov 1, 2008 at 10:48 AM, Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:
> +
> +The memory controller by default disables the hierarchy feature. Support
> +can be enabled by writing 1 to memory.features file of the root cgroup
> +
> +# echo 1 > memory.features
> +
> +The feature can be disabled by
> +
> +# echo 0 > memory.features

That's not a very intuitive interface. Why not memory.use_hierarchy?
(I presume that you're trying to cram multiple bits into a single
file, but that seems a bit ugly).

Paul
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