UDM_MAP_VPM
m->udm_flags = UDM_MAP_VPM;
if (map->udm_flags == UDM_MAP_VPM) {
map->udm_flags = UDM_MAP_VPM;
if (map->udm_flags & UDM_MAP_VPM) {
if (map->udm_flags & UDM_MAP_VPM) {
if (map->udm_flags & UDM_MAP_VPM) {