129 	ns->parent = parent_ns;  in create_user_ns()
193 	struct user_namespace *parent, *ns =  in free_user_ns()  local
198 		parent = ns->parent;  in free_user_ns()
216 		ns = parent;  in free_user_ns()
217 	} while (refcount_dec_and_test(&parent->ns.count));  in free_user_ns()
602 	if ((lower_ns == ns) && lower_ns->parent)  in uid_m_show()
603 		lower_ns = lower_ns->parent;  in uid_m_show()
623 	if ((lower_ns == ns) && lower_ns->parent)  in gid_m_show()
624 		lower_ns = lower_ns->parent;  in gid_m_show()
644 	if ((lower_ns == ns) && lower_ns->parent)  in projid_m_show()
645 		lower_ns = lower_ns->parent;  in projid_m_show()
908 		if (!file_ns_capable(file, map_ns->parent, CAP_SETFCAP))  in verify_root_map()
1110 	if (!ns->parent)  in proc_uid_map_write()
1113 	if ((seq_ns != ns) && (seq_ns != ns->parent))  in proc_uid_map_write()
1117 			 &ns->uid_map, &ns->parent->uid_map);  in proc_uid_map_write()
1127 	if (!ns->parent)  in proc_gid_map_write()
1130 	if ((seq_ns != ns) && (seq_ns != ns->parent))  in proc_gid_map_write()
1134 			 &ns->gid_map, &ns->parent->gid_map);  in proc_gid_map_write()
1144 	if (!ns->parent)  in proc_projid_map_write()
1147 	if ((seq_ns != ns) && (seq_ns != ns->parent))  in proc_projid_map_write()
1152 			 &ns->projid_map, &ns->parent->projid_map);  in proc_projid_map_write()
1171 			kuid_t uid = make_kuid(ns->parent, id);  in new_idmap_permitted()
1175 			kgid_t gid = make_kgid(ns->parent, id);  in new_idmap_permitted()
1190 	if (ns_capable(ns->parent, cap_setid) &&  in new_idmap_permitted()
1191 	    file_ns_capable(file, ns->parent, cap_setid))  in new_idmap_permitted()
1299 	for (ns = child; ns->level > ancestor->level; ns = ns->parent)  in in_userns()
1377 		p = p->parent;  in ns_get_owner()
1385 	return to_user_ns(ns)->parent;  in userns_owner()