pv_link4_4c
if (pg != NULL && (error = pv_link4_4c(pg, pm, va, &pteproto)) != 0) {
if (pg != NULL && (error = pv_link4_4c(pg, pm, va, &pteproto)) != 0) {
/*static*/ int pv_link4_4c(struct vm_page *, struct pmap *, vaddr_t, u_int *);