2016 static void destroy_cache_args(struct cache_args *ca)  in destroy_cache_args()  argument
2018 	if (ca->metadata_dev)  in destroy_cache_args()
2019 		dm_put_device(ca->ti, ca->metadata_dev);  in destroy_cache_args()
2021 	if (ca->cache_dev)  in destroy_cache_args()
2022 		dm_put_device(ca->ti, ca->cache_dev);  in destroy_cache_args()
2024 	if (ca->origin_dev)  in destroy_cache_args()
2025 		dm_put_device(ca->ti, ca->origin_dev);  in destroy_cache_args()
2027 	kfree(ca);  in destroy_cache_args()
2040 static int parse_metadata_dev(struct cache_args *ca, struct dm_arg_set *as,  in parse_metadata_dev()  argument
2050 	r = dm_get_device(ca->ti, dm_shift_arg(as), FMODE_READ | FMODE_WRITE,  in parse_metadata_dev()
2051 			  &ca->metadata_dev);  in parse_metadata_dev()
2057 	metadata_dev_size = get_dev_size(ca->metadata_dev);  in parse_metadata_dev()
2060 		       bdevname(ca->metadata_dev->bdev, b), THIN_METADATA_MAX_SECTORS);  in parse_metadata_dev()
2065 static int parse_cache_dev(struct cache_args *ca, struct dm_arg_set *as,  in parse_cache_dev()  argument
2073 	r = dm_get_device(ca->ti, dm_shift_arg(as), FMODE_READ | FMODE_WRITE,  in parse_cache_dev()
2074 			  &ca->cache_dev);  in parse_cache_dev()
2079 	ca->cache_sectors = get_dev_size(ca->cache_dev);  in parse_cache_dev()
2084 static int parse_origin_dev(struct cache_args *ca, struct dm_arg_set *as,  in parse_origin_dev()  argument
2092 	r = dm_get_device(ca->ti, dm_shift_arg(as), FMODE_READ | FMODE_WRITE,  in parse_origin_dev()
2093 			  &ca->origin_dev);  in parse_origin_dev()
2099 	ca->origin_sectors = get_dev_size(ca->origin_dev);  in parse_origin_dev()
2100 	if (ca->ti->len > ca->origin_sectors) {  in parse_origin_dev()
2108 static int parse_block_size(struct cache_args *ca, struct dm_arg_set *as,  in parse_block_size()  argument
2124 	if (block_size > ca->cache_sectors) {  in parse_block_size()
2129 	ca->block_size = block_size;  in parse_block_size()
2140 static int parse_features(struct cache_args *ca, struct dm_arg_set *as,  in parse_features()  argument
2150 	struct cache_features *cf = &ca->features;  in parse_features()
2179 static int parse_policy(struct cache_args *ca, struct dm_arg_set *as,  in parse_policy()  argument
2191 	ca->policy_name = dm_shift_arg(as);  in parse_policy()
2193 	r = dm_read_arg_group(_args, as, &ca->policy_argc, error);  in parse_policy()
2197 	ca->policy_argv = (const char **)as->argv;  in parse_policy()
2198 	dm_consume_args(as, ca->policy_argc);  in parse_policy()
2203 static int parse_cache_args(struct cache_args *ca, int argc, char **argv,  in parse_cache_args()  argument
2212 	r = parse_metadata_dev(ca, &as, error);  in parse_cache_args()
2216 	r = parse_cache_dev(ca, &as, error);  in parse_cache_args()
2220 	r = parse_origin_dev(ca, &as, error);  in parse_cache_args()
2224 	r = parse_block_size(ca, &as, error);  in parse_cache_args()
2228 	r = parse_features(ca, &as, error);  in parse_cache_args()
2232 	r = parse_policy(ca, &as, error);  in parse_cache_args()
2294 static int create_cache_policy(struct cache *cache, struct cache_args *ca,  in create_cache_policy()  argument
2297 	struct dm_cache_policy *p = dm_cache_policy_create(ca->policy_name,  in create_cache_policy()
2351 static int cache_create(struct cache_args *ca, struct cache **result)  in cache_create()  argument
2354 	char **error = &ca->ti->error;  in cache_create()
2356 	struct dm_target *ti = ca->ti;  in cache_create()
2359 	bool may_format = ca->features.mode == CM_WRITE;  in cache_create()
2365 	cache->ti = ca->ti;  in cache_create()
2375 	cache->features = ca->features;  in cache_create()
2381 	cache->metadata_dev = ca->metadata_dev;  in cache_create()
2382 	cache->origin_dev = ca->origin_dev;  in cache_create()
2383 	cache->cache_dev = ca->cache_dev;  in cache_create()
2385 	ca->metadata_dev = ca->origin_dev = ca->cache_dev = NULL;  in cache_create()
2388 	origin_blocks = cache->origin_sectors = ca->origin_sectors;  in cache_create()
2389 	origin_blocks = block_div(origin_blocks, ca->block_size);  in cache_create()
2392 	cache->sectors_per_block = ca->block_size;  in cache_create()
2398 	if (ca->block_size & (ca->block_size - 1)) {  in cache_create()
2399 		dm_block_t cache_size = ca->cache_sectors;  in cache_create()
2402 		cache_size = block_div(cache_size, ca->block_size);  in cache_create()
2405 		cache->sectors_per_block_shift = __ffs(ca->block_size);  in cache_create()
2406 		set_cache_size(cache, to_cblock(ca->cache_sectors >> cache->sectors_per_block_shift));  in cache_create()
2409 	r = create_cache_policy(cache, ca, error);  in cache_create()
2413 	cache->policy_nr_args = ca->policy_argc;  in cache_create()
2416 	r = set_config_values(cache, ca->policy_argc, ca->policy_argv);  in cache_create()
2423 				     ca->block_size, may_format,  in cache_create()
2573 	struct cache_args *ca;  in cache_ctr()  local
2576 	ca = kzalloc(sizeof(*ca), GFP_KERNEL);  in cache_ctr()
2577 	if (!ca) {  in cache_ctr()
2581 	ca->ti = ti;  in cache_ctr()
2583 	r = parse_cache_args(ca, argc, argv, &ti->error);  in cache_ctr()
2587 	r = cache_create(ca, &cache);  in cache_ctr()
2600 	destroy_cache_args(ca);  in cache_ctr()