Re: [PATCH v4 3/7] cgroup: protect cgroup->nr_(dying_)descendants by css_set_lock

[Roman Gushchin]

On Mon, Dec 03, 2018 at 08:17:06AM -0800, Tejun Heo wrote:
> On Fri, Nov 30, 2018 at 03:47:41PM -0800, Roman Gushchin wrote:
> > +    * nr_descendants and nr_dying_descendants are protected
> > +    * by cgroup_mutex and css_set_lock.
> 
> Can you be a bit more specific - hold both for writes, either for
> reads.

Sure. Thanks!