1443 typedef void (*non_anon_test_fn)(char *mem, const char *smem, size_t size);
1445 static void test_cow(char *mem, const char *smem, size_t size)  in test_cow()  argument
1450 	memcpy(old, smem, size);  in test_cow()
1456 	ksft_test_result(!memcmp(smem, old, size),  in test_cow()
1461 static void test_ro_pin(char *mem, const char *smem, size_t size)  in test_ro_pin()  argument
1466 static void test_ro_fast_pin(char *mem, const char *smem, size_t size)  in test_ro_fast_pin()  argument
1473 	char *mem, *smem, tmp;  in run_with_zeropage()  local
1484 	smem = mmap(NULL, pagesize, PROT_READ, MAP_PRIVATE | MAP_ANON, -1, 0);  in run_with_zeropage()
1485 	if (smem == MAP_FAILED) {  in run_with_zeropage()
1491 	tmp = *mem + *smem;  in run_with_zeropage()
1494 	fn(mem, smem, pagesize);  in run_with_zeropage()
1497 	if (smem != MAP_FAILED)  in run_with_zeropage()
1498 		munmap(smem, pagesize);  in run_with_zeropage()
1503 	char *mem, *smem, *mmap_mem, *mmap_smem, tmp;  in run_with_huge_zeropage()  local
1531 	smem = (char *)(((uintptr_t)mmap_smem + pmdsize) & ~(pmdsize - 1));  in run_with_huge_zeropage()
1534 	ret |= madvise(smem, pmdsize, MADV_HUGEPAGE);  in run_with_huge_zeropage()
1545 	tmp = *mem + *smem;  in run_with_huge_zeropage()
1548 	    !pagemap_is_populated(pagemap_fd, smem + pagesize)) {  in run_with_huge_zeropage()
1553 	fn(mem, smem, pmdsize);  in run_with_huge_zeropage()
1562 	char *mem, *smem, tmp;  in run_with_memfd()  local
1585 	smem = mmap(NULL, pagesize, PROT_READ, MAP_SHARED, fd, 0);  in run_with_memfd()
1586 	if (smem == MAP_FAILED) {  in run_with_memfd()
1592 	tmp = *mem + *smem;  in run_with_memfd()
1595 	fn(mem, smem, pagesize);  in run_with_memfd()
1598 	if (smem != MAP_FAILED)  in run_with_memfd()
1599 		munmap(smem, pagesize);  in run_with_memfd()
1606 	char *mem, *smem, tmp;  in run_with_tmpfile()  local
1636 	smem = mmap(NULL, pagesize, PROT_READ, MAP_SHARED, fd, 0);  in run_with_tmpfile()
1637 	if (smem == MAP_FAILED) {  in run_with_tmpfile()
1643 	tmp = *mem + *smem;  in run_with_tmpfile()
1646 	fn(mem, smem, pagesize);  in run_with_tmpfile()
1649 	if (smem != MAP_FAILED)  in run_with_tmpfile()
1650 		munmap(smem, pagesize);  in run_with_tmpfile()
1659 	char *mem, *smem, tmp;  in run_with_memfd_hugetlb()  local
1686 	smem = mmap(NULL, hugetlbsize, PROT_READ, MAP_SHARED, fd, 0);  in run_with_memfd_hugetlb()
1687 	if (smem == MAP_FAILED) {  in run_with_memfd_hugetlb()
1693 	tmp = *mem + *smem;  in run_with_memfd_hugetlb()
1696 	fn(mem, smem, hugetlbsize);  in run_with_memfd_hugetlb()
1699 	if (smem != MAP_FAILED)  in run_with_memfd_hugetlb()
1700 		munmap(smem, hugetlbsize);  in run_with_memfd_hugetlb()