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

Tejun Heo
2018-11-20T16:36:42Z

On Tue, Nov 20, 2018 at 04:33:11PM +0000, Roman Gushchin wrote:
> > If a non-frozen task is being moved into a frozen cgroup, shouldn't
> > that also trigger frozen state update?
>
> It does! Just below these lines:
>
> /*
> * If the task isn't in the desired state, force it to it.
> */
> if (task->frozen != test_bit(CGRP_FREEZE, &dst->flags))
> cgroup_freeze_task(task, test_bit(CGRP_FREEZE, &dst->flags));

But that wouldn't udpate the cgroup's frozen state and generate
notifications, right?

Thanks.

--
tejun