vm_page_relookup
pa[i] = vm_page_relookup(sfio->obj,
pga = vm_page_relookup(obj, sfio->pindex0 + i);
m = vm_page_relookup(obj, OFF_TO_IDX(foff));
m = vm_page_relookup(obj, OFF_TO_IDX(bp->b_offset) + i);
vm_page_t vm_page_relookup(vm_object_t, vm_pindex_t);
KASSERT(m[i] == vm_page_relookup(object, pindex++),