55 	char *mmap_mem, *mem;  in mmap_aligned()  local
61 	mem = (char *)(((uintptr_t)mmap_mem + size - 1) & ~(size - 1));  in mmap_aligned()
62 	munmap(mmap_mem, mem - mmap_mem);  in mmap_aligned()
63 	munmap(mem + size, mmap_mem + mmap_size - mem - size);  in mmap_aligned()
65 	return mem;  in mmap_aligned()
73 	char *mem, *addr;  in alloc_one_folio()  local
96 		mem = mmap_aligned(size, prot, flags);  in alloc_one_folio()
103 		mem = mmap(NULL, size, prot, flags, -1, 0);  in alloc_one_folio()
106 	if (mem == MAP_FAILED) {  in alloc_one_folio()
107 		mem = NULL;  in alloc_one_folio()
111 	assert(((uintptr_t)mem & (size - 1)) == 0);  in alloc_one_folio()
118 	mem[0] = 1;  in alloc_one_folio()
119 	for (addr = mem; addr < mem + size; addr += pagesize) {  in alloc_one_folio()
121 			munmap(mem, size);  in alloc_one_folio()
122 			mem = NULL;  in alloc_one_folio()
126 	memset(mem, 1, size);  in alloc_one_folio()
131 	return mem;  in alloc_one_folio()
134 static bool check_uffd_wp_state(void *mem, size_t size, bool expect)  in check_uffd_wp_state()  argument
139 	for (addr = mem; addr < mem + size; addr += pagesize) {  in check_uffd_wp_state()
144 					      (addr - mem) / pagesize);  in check_uffd_wp_state()
165 	void *mem = NULL;  in test_one_folio()  local
177 	mem = alloc_one_folio(size, private, hugetlb);  in test_one_folio()
178 	if (!mem) {  in test_one_folio()
191 	if (uffd_register(uffd, mem, size, false, true, false)) {  in test_one_folio()
196 	wp_prms.range.start = (uintptr_t)mem;  in test_one_folio()
204 		madvise(mem, size, MADV_PAGEOUT);  in test_one_folio()
205 		if (!range_is_swapped(mem, size)) {  in test_one_folio()
212 	if (!check_uffd_wp_state(mem, size, true))  in test_one_folio()
225 	if (mremap(mem, size, size, MREMAP_FIXED | MREMAP_MAYMOVE, addr) == MAP_FAILED) {  in test_one_folio()
230 	mem = addr;  in test_one_folio()
233 	if (!check_uffd_wp_state(mem, size, false))  in test_one_folio()
243 	if (mem)  in test_one_folio()
244 		munmap(mem, size);  in test_one_folio()