On Fri, Jul 12, 2013 at 05:08:23PM +0800, Li Zefan wrote:
> > so a modular cgroup subsystem can be unloaded inbetween, say it's net_cls, and
> > then it's possible that:
> >
> > # mount -t cgroup -o net_cls xxx /cgroup
> >
> > The above operation succeeds but it's not binded to cgroupfs as it just got
> > unloaded.
Ooh, right, it'd be excluded from the iteration.
> for (i = 0; i < CGROUP_SUBSYS_COUNT; i++) {
> ...
> if (!subsys[i] && (added_mask & (1 << i))
> return -EINVAL;
> ...
> }
>
> This should work.
Yeah, I kinda dislike the raw iteration tho. I wonder whether setting
the actually added mask and comparing would be cleaner. I'll
experiment with it and post the updated patch.
Thanks!
--
tejun
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