Re: [RFC][PATCH] NOOP cgroup subsystem

[Paul Menage]

On Thu, Jan 8, 2009 at 10:29 PM, Li Zefan <lizf@xxxxxxxxxxxxxx> wrote:
>
> Agreed, but it can't work by just removing the checking in cgroup mount option,

Right - it's more complicated than that. There are some places in the
code that rely on the fact that every hierarchy currently has at least
one subsystem (anything that uses find_first_subsystem() for example)
and we'd need to work around that.

Paul

> I just tried it:
>
> static int parse_cgroupfs_options(char *data,
>                                     struct cgroup_sb_opts *opts)
> {
>        ...
> -       if (!opts->subsys_bits)
> -               return -EINVAL;
>        ...
> }
>
>
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