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Message-ID: <4B1F001C.8020304@cn.fujitsu.com>
Date: Wed, 09 Dec 2009 09:40:44 +0800
From: Li Zefan <lizf@...fujitsu.com>
To: Ben Blum <bblum@...rew.cmu.edu>
CC: linux-kernel@...r.kernel.org,
containers@...ts.linux-foundation.org, akpm@...ux-foundation.org,
menage@...gle.com
Subject: Re: [RFC] [PATCH 5/5] cgroups: subsystem dependencies
Ben Blum wrote:
> On Tue, Dec 08, 2009 at 02:11:21PM +0800, Li Zefan wrote:
>>> This patch adds a mechanism with which a subsystem can specify dependencies on
>>> other subsystems. Since subsystems can come and go, it would not be useful to
>>> refer to a depended-upon subsystem by subsys_id, so instead a NULL-terminated
>>> array of strings must be specified. Validation is done by scanning for each
>>> potential subsystem its list of subsystem names with strcmp at the end of
>>> parse_cgroupfs_options.
>> I once posted a patch to implement this feature, but it was
>> rejected by Andrew, because there was no user using it.
>>
>> And still there is no user, right?
>
> Dunno - Paul mentioned it might be useful in the future, so I threw this
> together in an hour or so. Not entirely sure what he had in mind, but
> this series can go with or without this particular patch.
>
So I think Andrew's suggestion still applies: drop the
patch for now, until it finds its user.
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