1 // SPDX-License-Identifier: GPL-2.0
27 void print_cachestat(struct cachestat *cs)  in print_cachestat()  argument
31 	cs->nr_cache, cs->nr_dirty, cs->nr_writeback,  in print_cachestat()
32 	cs->nr_evicted, cs->nr_recently_evicted);  in print_cachestat()
45 		goto out;  in write_exactly()
67 		remained -= read_len;  in write_exactly()
83 		remained -= write_len;  in write_exactly()
92 out:  in write_exactly()
125 	struct cachestat cs;  in test_cachestat()  local
130 	if (fd == -1) {  in test_cachestat()
133 		goto out;  in test_cachestat()
146 	syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0);  in test_cachestat()
151 		ksft_print_msg("Cachestat returned non-zero.\n");  in test_cachestat()
156 		print_cachestat(&cs);  in test_cachestat()
159 			if (cs.nr_cache + cs.nr_evicted != num_pages) {  in test_cachestat()
174 			syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0);  in test_cachestat()
180 				print_cachestat(&cs);  in test_cachestat()
182 				if (cs.nr_dirty) {  in test_cachestat()
188 				ksft_print_msg("Cachestat (after fsync) returned non-zero.\n");  in test_cachestat()
200 out:  in test_cachestat()
212 	struct cachestat cs;  in test_cachestat_shmem()  local
220 		goto out;  in test_cachestat_shmem()
235 	syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0);  in test_cachestat_shmem()
238 		ksft_print_msg("Cachestat returned non-zero.\n");  in test_cachestat_shmem()
242 		print_cachestat(&cs);  in test_cachestat_shmem()
243 		if (cs.nr_cache + cs.nr_evicted != num_pages) {  in test_cachestat_shmem()
252 out:  in test_cachestat_shmem()
262 	ret = syscall(__NR_cachestat, -1, NULL, NULL, 0);  in main()
263 	if (ret == -1 && errno == ENOSYS)  in main()
268 	if (ret == -1 && errno == EBADF) {  in main()