linux-kernel - Re: [RFC] [PATCH 5/5] cgroups: subsystem dependencies

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Message-ID: <4B1DEE09.4010508@cn.fujitsu.com>
Date:	Tue, 08 Dec 2009 14:11:21 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	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

> 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?


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