Quoting Matt Helsley (matthltc@xxxxxxxxxx):
> -int cgroup_frozen(struct task_struct *task)
> +int cgroup_freezing_or_frozen(struct task_struct *task)
> {
> struct freezer *freezer;
> enum freezer_state state;
>
> task_lock(task);
> freezer = task_freezer(task);
> - state = freezer->state;
> + if (!freezer->css.cgroup->parent)
> + state = CGROUP_THAWED; /* root cgroup can't be frozen */
> + else
> + state = freezer->state;
Why do you have to add this special-casing now? I thought
we were already preventing freezing the root cgroup, so
freezer->state should be sane in that case anyway?
> task_unlock(task);
>
> - return state == CGROUP_FROZEN;
> + return (state == CGROUP_FREEZING) || (state == CGROUP_FROZEN);
> }
-serge
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