vm_page_is_valid
if (vm_page_is_valid(pa[i], vmoff(i, off) & PAGE_MASK,
if (vm_page_is_valid(pa[j], vmoff(j, off) & PAGE_MASK,
if (vm_page_is_valid(pa[j], vmoff(j, off) & PAGE_MASK,
valid = vm_page_is_valid(m,
if (vm_page_is_valid(m, base, size) == 0)
int vm_page_is_valid(vm_page_t, int, int);