region_del        730 mm/hugetlb.c   	region_del(resv_map, 0, LONG_MAX);
region_del       2014 mm/hugetlb.c   			ret = region_del(resv, idx, idx + 1);
region_del       4778 mm/hugetlb.c   		chg = region_del(resv_map, start, end);