[RFC] [PATCH 5/5] cgroups: subsystem dependencies

[Li Zefan]

> 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?