CGROUP_FREEZING_PARENT
freezer->state |= CGROUP_FREEZING_PARENT | CGROUP_FROZEN;
CGROUP_FREEZING = CGROUP_FREEZING_SELF | CGROUP_FREEZING_PARENT,
CGROUP_FREEZING_PARENT);
return (bool)(freezer->state & CGROUP_FREEZING_PARENT);