uutil_list_node_walk_t
uutil_list_node_walk_t *ulnw;
ulnw = mdb_alloc(sizeof (uutil_list_node_walk_t), UM_SLEEP);
uutil_list_node_walk_t *ulnw = wsp->walk_data;
uutil_list_node_walk_t *ulnw = wsp->walk_data;
mdb_free(ulnw, sizeof (uutil_list_node_walk_t));