1591 static void destroy_cache_args(struct cache_args *ca)  in destroy_cache_args()  argument
1593 	if (ca->metadata_dev)  in destroy_cache_args()
1594 		dm_put_device(ca->ti, ca->metadata_dev);  in destroy_cache_args()
1596 	if (ca->cache_dev)  in destroy_cache_args()
1597 		dm_put_device(ca->ti, ca->cache_dev);  in destroy_cache_args()
1599 	if (ca->origin_dev)  in destroy_cache_args()
1600 		dm_put_device(ca->ti, ca->origin_dev);  in destroy_cache_args()
1602 	kfree(ca);  in destroy_cache_args()
1615 static int parse_metadata_dev(struct cache_args *ca, struct dm_arg_set *as,  in parse_metadata_dev()  argument
1625 	r = dm_get_device(ca->ti, dm_shift_arg(as), FMODE_READ | FMODE_WRITE,  in parse_metadata_dev()
1626 			  &ca->metadata_dev);  in parse_metadata_dev()
1632 	metadata_dev_size = get_dev_size(ca->metadata_dev);  in parse_metadata_dev()
1635 		       bdevname(ca->metadata_dev->bdev, b), THIN_METADATA_MAX_SECTORS);  in parse_metadata_dev()
1640 static int parse_cache_dev(struct cache_args *ca, struct dm_arg_set *as,  in parse_cache_dev()  argument
1648 	r = dm_get_device(ca->ti, dm_shift_arg(as), FMODE_READ | FMODE_WRITE,  in parse_cache_dev()
1649 			  &ca->cache_dev);  in parse_cache_dev()
1654 	ca->cache_sectors = get_dev_size(ca->cache_dev);  in parse_cache_dev()
1659 static int parse_origin_dev(struct cache_args *ca, struct dm_arg_set *as,  in parse_origin_dev()  argument
1667 	r = dm_get_device(ca->ti, dm_shift_arg(as), FMODE_READ | FMODE_WRITE,  in parse_origin_dev()
1668 			  &ca->origin_dev);  in parse_origin_dev()
1674 	ca->origin_sectors = get_dev_size(ca->origin_dev);  in parse_origin_dev()
1675 	if (ca->ti->len > ca->origin_sectors) {  in parse_origin_dev()
1683 static int parse_block_size(struct cache_args *ca, struct dm_arg_set *as,  in parse_block_size()  argument
1698 	if (tmp > ca->cache_sectors) {  in parse_block_size()
1703 	ca->block_size = tmp;  in parse_block_size()
1714 static int parse_features(struct cache_args *ca, struct dm_arg_set *as,  in parse_features()  argument
1724 	struct cache_features *cf = &ca->features;  in parse_features()
1750 static int parse_policy(struct cache_args *ca, struct dm_arg_set *as,  in parse_policy()  argument
1762 	ca->policy_name = dm_shift_arg(as);  in parse_policy()
1764 	r = dm_read_arg_group(_args, as, &ca->policy_argc, error);  in parse_policy()
1768 	ca->policy_argv = (const char **)as->argv;  in parse_policy()
1769 	dm_consume_args(as, ca->policy_argc);  in parse_policy()
1774 static int parse_cache_args(struct cache_args *ca, int argc, char **argv,  in parse_cache_args()  argument
1783 	r = parse_metadata_dev(ca, &as, error);  in parse_cache_args()
1787 	r = parse_cache_dev(ca, &as, error);  in parse_cache_args()
1791 	r = parse_origin_dev(ca, &as, error);  in parse_cache_args()
1795 	r = parse_block_size(ca, &as, error);  in parse_cache_args()
1799 	r = parse_features(ca, &as, error);  in parse_cache_args()
1803 	r = parse_policy(ca, &as, error);  in parse_cache_args()
1865 static int create_cache_policy(struct cache *cache, struct cache_args *ca,  in create_cache_policy()  argument
1868 	cache->policy =	dm_cache_policy_create(ca->policy_name,  in create_cache_policy()
1911 static int cache_create(struct cache_args *ca, struct cache **result)  in cache_create()  argument
1914 	char **error = &ca->ti->error;  in cache_create()
1916 	struct dm_target *ti = ca->ti;  in cache_create()
1919 	bool may_format = ca->features.mode == CM_WRITE;  in cache_create()
1925 	cache->ti = ca->ti;  in cache_create()
1934 	cache->features = ca->features;  in cache_create()
1940 	cache->metadata_dev = ca->metadata_dev;  in cache_create()
1941 	cache->origin_dev = ca->origin_dev;  in cache_create()
1942 	cache->cache_dev = ca->cache_dev;  in cache_create()
1944 	ca->metadata_dev = ca->origin_dev = ca->cache_dev = NULL;  in cache_create()
1947 	origin_blocks = cache->origin_sectors = ca->origin_sectors;  in cache_create()
1948 	origin_blocks = block_div(origin_blocks, ca->block_size);  in cache_create()
1951 	cache->sectors_per_block = ca->block_size;  in cache_create()
1957 	if (ca->block_size & (ca->block_size - 1)) {  in cache_create()
1958 		dm_block_t cache_size = ca->cache_sectors;  in cache_create()
1961 		cache_size = block_div(cache_size, ca->block_size);  in cache_create()
1964 		cache->sectors_per_block_shift = __ffs(ca->block_size);  in cache_create()
1965 		cache->cache_size = to_cblock(ca->cache_sectors >> cache->sectors_per_block_shift);  in cache_create()
1968 	r = create_cache_policy(cache, ca, error);  in cache_create()
1972 	cache->policy_nr_args = ca->policy_argc;  in cache_create()
1975 	r = set_config_values(cache, ca->policy_argc, ca->policy_argv);  in cache_create()
1982 				     ca->block_size, may_format,  in cache_create()
2109 	struct cache_args *ca;  in cache_ctr()  local
2112 	ca = kzalloc(sizeof(*ca), GFP_KERNEL);  in cache_ctr()
2113 	if (!ca) {  in cache_ctr()
2117 	ca->ti = ti;  in cache_ctr()
2119 	r = parse_cache_args(ca, argc, argv, &ti->error);  in cache_ctr()
2123 	r = cache_create(ca, &cache);  in cache_ctr()
2136 	destroy_cache_args(ca);  in cache_ctr()