1 // SPDX-License-Identifier: GPL-2.0
70 	static int supported = -1;  in pagemap_scan_supported()
73 	if (supported != -1)  in pagemap_scan_supported()
105 	return page_entry_is(fd, start, "soft-dirty",  in pagemap_is_softdirty()
125 	/* If present (63th bit), PFN is at bit 0 -- 54. */  in pagemap_get_pfn()
128 	return -1ul;  in pagemap_get_pfn()
140 	close(fd);  in clear_softdirty()
161 	if (fd == -1)  in read_pmd_pagesize()
166 		close(fd);  in read_pmd_pagesize()
170 	close(fd);  in read_pmd_pagesize()
199 	uint64_t thp = -1;  in __check_huge()
205 	ret = snprintf(addr_pattern, MAX_LINE_LENGTH, "%08lx-",  in __check_huge()
256 		 MAP_NORESERVE | MAP_PRIVATE, -1, 0) != ptr)  in allocate_transhuge()
266 		  (uintptr_t)ptr >> (pshift() - 3)) != sizeof(ent))  in allocate_transhuge()
271 	    !(PAGEMAP_PFN(ent[0]) & ((1 << (HPAGE_SHIFT - pshift())) - 1)))  in allocate_transhuge()
274 	return -1;  in allocate_transhuge()
312 		if (entry->d_type != DT_DIR)  in detect_hugetlb_page_sizes()
314 		if (sscanf(entry->d_name, "hugepages-%zukB", &kb) != 1)  in detect_hugetlb_page_sizes()
324 /* If `ioctls' non-NULL, the allowed ioctls will be returned into the var */
339 	uffdio_register.range.start = (unsigned long)addr;  in uffd_register_with_ioctls()
340 	uffdio_register.range.len = len;  in uffd_register_with_ioctls()
343 	if (ioctl(uffd, UFFDIO_REGISTER, &uffdio_register) == -1)  in uffd_register_with_ioctls()
344 		ret = -errno;  in uffd_register_with_ioctls()
360 	struct uffdio_range range = { .start = (uintptr_t)addr, .len = len };  in uffd_unregister()  local
363 	if (ioctl(uffd, UFFDIO_UNREGISTER, &range) == -1)  in uffd_unregister()
364 		ret = -errno;  in uffd_unregister()