Cc: Andrew Morton (to pick up those patches)

Serge E. Hallyn wrote:
quoted text
> This patch is sent as an answer to a previous thread around the ns_cgroup.
> 
> https://lists.linux-foundation.org/pipermail/containers/2009-June/018627.html
> 
> It adds a control file 'clone_children' for a cgroup.
> This control file is a boolean specifying if the child cgroup should
> be a clone of the parent cgroup or not. The default value is 'false'.
> 
> This flag makes the child cgroup to call the post_clone callback of all
> the subsystem, if it is available.
> 
> At present, the cpuset is the only one which had implemented the post_clone
> callback.
> 
> The option can be set at mount time by specifying the 'clone_children' mount
> option.
> 
> Signed-off-by: Daniel Lezcano <daniel.lezcano@free.fr>
> Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com>
> Cc: Eric W. Biederman <ebiederm@xmission.com>
> Cc: Paul Menage <menage@google.com>

Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
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