void cgroup_context_free_blockio_device_weight(CGroupContext *c, CGroupBlockIODeviceWeight *w);
void cgroup_context_free_blockio_device_bandwidth(CGroupContext *c, CGroupBlockIODeviceBandwidth *b);
-void unit_realize_cgroup(Unit *u);
+int unit_realize_cgroup(Unit *u);
void unit_destroy_cgroup(Unit *u);
int manager_setup_cgroup(Manager *m);