nsr_link
wsp->walk_addr = (uintptr_t)nsr.nsr_link.tqe_next;
TAILQ_REMOVE(&nvp->nv_slreqs, slr, nsr_link);
TAILQ_INSERT_TAIL(&slreqs2free, slr, nsr_link);
TAILQ_REMOVE(&slreqs2free, slr, nsr_link);
TAILQ_INSERT_TAIL(&nvp->nv_slreqs, slr, nsr_link);
TAILQ_REMOVE(&nvp->nv_slreqs, slr, nsr_link);
TAILQ_FOREACH(slr, &nvp->nv_slreqs, nsr_link) {