1 // SPDX-License-Identifier: GPL-2.0
28 void print_cachestat(struct cachestat *cs)  in print_cachestat()  argument
32 	cs->nr_cache, cs->nr_dirty, cs->nr_writeback,  in print_cachestat()
33 	cs->nr_evicted, cs->nr_recently_evicted);  in print_cachestat()
68 		remained -= read_len;  in write_exactly()
84 		remained -= write_len;  in write_exactly()
115  * If test_fsync == true, fsync the file, then check the number of dirty
126 	struct cachestat cs;  in test_cachestat()  local
131 	if (fd == -1) {  in test_cachestat()
147 	syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0);  in test_cachestat()
152 		ksft_print_msg("Cachestat returned non-zero.\n");  in test_cachestat()
157 		print_cachestat(&cs);  in test_cachestat()
160 			if (cs.nr_cache + cs.nr_evicted != num_pages) {  in test_cachestat()
162 					"Total number of cached and evicted pages is off.\n");  in test_cachestat()
175 			syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0);  in test_cachestat()
181 				print_cachestat(&cs);  in test_cachestat()
183 				if (cs.nr_dirty) {  in test_cachestat()
186 						"Number of dirty should be zero after fsync.\n");  in test_cachestat()
189 				ksft_print_msg("Cachestat (after fsync) returned non-zero.\n");  in test_cachestat()
213 	struct cachestat cs;  in test_cachestat_shmem()  local
236 	syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0);  in test_cachestat_shmem()
239 		ksft_print_msg("Cachestat returned non-zero.\n");  in test_cachestat_shmem()
243 		print_cachestat(&cs);  in test_cachestat_shmem()
244 		if (cs.nr_cache + cs.nr_evicted != num_pages) {  in test_cachestat_shmem()
246 				"Total number of cached and evicted pages is off.\n");  in test_cachestat_shmem()
263 	ret = syscall(__NR_cachestat, -1, NULL, NULL, 0);  in main()
264 	if (ret == -1 && errno == ENOSYS)  in main()
269 	if (ret == -1 && errno == EBADF) {  in main()