Re: [PATCH v3 4/7] cgroup: cgroup v2 freezer

Tejun Heo
2018-11-20T18:05:26Z

Hello,

On Tue, Nov 20, 2018 at 05:39:03PM +0000, Roman Gushchin wrote:
> Yeah, it's a good point. I've thought about it mostly in the fork() context,
> where if freezing of a cgroup races with fork(), it makes no sense to
> switch the cgroup state back and forth. But that case is different, as
> the child will be trapped just on the return path from fork() call.

I think it'd be best to tie the task counter transitions to cgroup
state update and propagation so that the state is always reflective of
the task states.

Thanks.

--
tejun