45 static bool is_backed_by_folio(char *vaddr, int order, int pagemap_fd,  in is_backed_by_folio()  argument
50 	const unsigned long nr_pages = 1UL << order;  in is_backed_by_folio()
65 	/* check for order-0 pages */  in is_backed_by_folio()
66 	if (!order) {  in is_backed_by_folio()
95 	 * assume this folio has the expected order  in is_backed_by_folio()
127 			ksft_print_msg("order %d: expected: %d got %d\n", i,  in check_after_split_folio_orders()
212 static void split_pmd_thp_to_order(int order)  in split_pmd_thp_to_order()  argument
232 		(uint64_t)one_page + len, order);  in split_pmd_thp_to_order()
239 	expected_orders[order] = 4 << (pmd_order - order);  in split_pmd_thp_to_order()
249 	ksft_test_result_pass("Split huge pages to order %d successful\n", order);  in split_pmd_thp_to_order()
343 static void split_file_backed_thp(int order)  in split_file_backed_thp()  argument
403 	write_debugfs(PATH_FMT, testfile, pgoff_start, pgoff_end, order);  in split_file_backed_thp()
444 	ksft_test_result_pass("File-backed THP split to order %d test done\n", order);  in split_file_backed_thp()
555 		const char *fs_loc, int order, int offset)  in split_thp_in_pagecache_to_order_at()  argument
585 				      (uint64_t)split_addr + pagesize, order);  in split_thp_in_pagecache_to_order_at()
587 		expected_orders[order] = fd_size / (pagesize << order);  in split_thp_in_pagecache_to_order_at()
593 				      (uint64_t)split_addr + pagesize, order, offset);  in split_thp_in_pagecache_to_order_at()
595 		for (i = order + 1; i < pmd_order; i++)  in split_thp_in_pagecache_to_order_at()
597 		expected_orders[order] = 2 * times;  in split_thp_in_pagecache_to_order_at()
627 			ksft_exit_fail_msg("Split PMD-mapped pagecache folio to order %d failed\n", order);  in split_thp_in_pagecache_to_order_at()
628 		ksft_test_result_pass("Split PMD-mapped pagecache folio to order %d passed\n", order);  in split_thp_in_pagecache_to_order_at()
631 …t_exit_fail_msg("Split PMD-mapped pagecache folio to order %d at in-folio offset %d failed\n", ord…  in split_thp_in_pagecache_to_order_at()
632 …est_result_pass("Split PMD-mapped pagecache folio to order %d at in-folio offset %d passed\n", ord…  in split_thp_in_pagecache_to_order_at()