uutil_listpool_walk_t
uutil_listpool_walk_t *ulpw;
ulpw = mdb_alloc(sizeof (uutil_listpool_walk_t), UM_SLEEP);
uutil_listpool_walk_t *ulpw = wsp->walk_data;
uutil_listpool_walk_t *ulpw = wsp->walk_data;
mdb_free(ulpw, sizeof (uutil_listpool_walk_t));