CGRP_ATTACH_LOCK_GLOBAL
cgroup_attach_lock(CGRP_ATTACH_LOCK_GLOBAL, NULL);
cgroup_attach_unlock(CGRP_ATTACH_LOCK_GLOBAL, NULL);
cgroup_attach_lock(CGRP_ATTACH_LOCK_GLOBAL, NULL);
cgroup_attach_unlock(CGRP_ATTACH_LOCK_GLOBAL, NULL);
case CGRP_ATTACH_LOCK_GLOBAL:
case CGRP_ATTACH_LOCK_GLOBAL:
*lock_mode = CGRP_ATTACH_LOCK_GLOBAL;
lock_mode = CGRP_ATTACH_LOCK_GLOBAL;