nv_link
wsp->walk_addr = (uintptr_t)nv.nv_link.tqe_next;
TAILQ_INSERT_TAIL(&hostp->nh_vholds_list, nvp, nv_link);
TAILQ_REMOVE(&hostp->nh_vholds_list, nvp, nv_link);
TAILQ_FOREACH(nvp, &hostp->nh_vholds_list, nv_link) {
nvp = TAILQ_NEXT(nvp, nv_link);
nvp_tmp = TAILQ_NEXT(nvp, nv_link);
TAILQ_FOREACH(nvp, &hostp->nh_vholds_list, nv_link) {
new_nvp = TAILQ_NEXT(nvp, nv_link);