2422 static void destroy_cache_args(struct cache_args *ca)  in destroy_cache_args()  argument
2424 	if (ca->metadata_dev)  in destroy_cache_args()
2425 		dm_put_device(ca->ti, ca->metadata_dev);  in destroy_cache_args()
2427 	if (ca->cache_dev)  in destroy_cache_args()
2428 		dm_put_device(ca->ti, ca->cache_dev);  in destroy_cache_args()
2430 	if (ca->origin_dev)  in destroy_cache_args()
2431 		dm_put_device(ca->ti, ca->origin_dev);  in destroy_cache_args()
2433 	kfree(ca);  in destroy_cache_args()
2446 static int parse_metadata_dev(struct cache_args *ca, struct dm_arg_set *as,  in parse_metadata_dev()  argument
2456 	r = dm_get_device(ca->ti, dm_shift_arg(as), FMODE_READ | FMODE_WRITE,  in parse_metadata_dev()
2457 			  &ca->metadata_dev);  in parse_metadata_dev()
2463 	metadata_dev_size = get_dev_size(ca->metadata_dev);  in parse_metadata_dev()
2466 		       bdevname(ca->metadata_dev->bdev, b), THIN_METADATA_MAX_SECTORS);  in parse_metadata_dev()
2471 static int parse_cache_dev(struct cache_args *ca, struct dm_arg_set *as,  in parse_cache_dev()  argument
2479 	r = dm_get_device(ca->ti, dm_shift_arg(as), FMODE_READ | FMODE_WRITE,  in parse_cache_dev()
2480 			  &ca->cache_dev);  in parse_cache_dev()
2485 	ca->cache_sectors = get_dev_size(ca->cache_dev);  in parse_cache_dev()
2490 static int parse_origin_dev(struct cache_args *ca, struct dm_arg_set *as,  in parse_origin_dev()  argument
2498 	r = dm_get_device(ca->ti, dm_shift_arg(as), FMODE_READ | FMODE_WRITE,  in parse_origin_dev()
2499 			  &ca->origin_dev);  in parse_origin_dev()
2505 	ca->origin_sectors = get_dev_size(ca->origin_dev);  in parse_origin_dev()
2506 	if (ca->ti->len > ca->origin_sectors) {  in parse_origin_dev()
2514 static int parse_block_size(struct cache_args *ca, struct dm_arg_set *as,  in parse_block_size()  argument
2530 	if (block_size > ca->cache_sectors) {  in parse_block_size()
2535 	ca->block_size = block_size;  in parse_block_size()
2546 static int parse_features(struct cache_args *ca, struct dm_arg_set *as,  in parse_features()  argument
2556 	struct cache_features *cf = &ca->features;  in parse_features()
2585 static int parse_policy(struct cache_args *ca, struct dm_arg_set *as,  in parse_policy()  argument
2597 	ca->policy_name = dm_shift_arg(as);  in parse_policy()
2599 	r = dm_read_arg_group(_args, as, &ca->policy_argc, error);  in parse_policy()
2603 	ca->policy_argv = (const char **)as->argv;  in parse_policy()
2604 	dm_consume_args(as, ca->policy_argc);  in parse_policy()
2609 static int parse_cache_args(struct cache_args *ca, int argc, char **argv,  in parse_cache_args()  argument
2618 	r = parse_metadata_dev(ca, &as, error);  in parse_cache_args()
2622 	r = parse_cache_dev(ca, &as, error);  in parse_cache_args()
2626 	r = parse_origin_dev(ca, &as, error);  in parse_cache_args()
2630 	r = parse_block_size(ca, &as, error);  in parse_cache_args()
2634 	r = parse_features(ca, &as, error);  in parse_cache_args()
2638 	r = parse_policy(ca, &as, error);  in parse_cache_args()
2700 static int create_cache_policy(struct cache *cache, struct cache_args *ca,  in create_cache_policy()  argument
2703 	struct dm_cache_policy *p = dm_cache_policy_create(ca->policy_name,  in create_cache_policy()
2757 static int cache_create(struct cache_args *ca, struct cache **result)  in cache_create()  argument
2760 	char **error = &ca->ti->error;  in cache_create()
2762 	struct dm_target *ti = ca->ti;  in cache_create()
2765 	bool may_format = ca->features.mode == CM_WRITE;  in cache_create()
2771 	cache->ti = ca->ti;  in cache_create()
2781 	cache->features = ca->features;  in cache_create()
2787 	cache->metadata_dev = ca->metadata_dev;  in cache_create()
2788 	cache->origin_dev = ca->origin_dev;  in cache_create()
2789 	cache->cache_dev = ca->cache_dev;  in cache_create()
2791 	ca->metadata_dev = ca->origin_dev = ca->cache_dev = NULL;  in cache_create()
2794 	origin_blocks = cache->origin_sectors = ca->origin_sectors;  in cache_create()
2795 	origin_blocks = block_div(origin_blocks, ca->block_size);  in cache_create()
2798 	cache->sectors_per_block = ca->block_size;  in cache_create()
2804 	if (ca->block_size & (ca->block_size - 1)) {  in cache_create()
2805 		dm_block_t cache_size = ca->cache_sectors;  in cache_create()
2808 		cache_size = block_div(cache_size, ca->block_size);  in cache_create()
2811 		cache->sectors_per_block_shift = __ffs(ca->block_size);  in cache_create()
2812 		set_cache_size(cache, to_cblock(ca->cache_sectors >> cache->sectors_per_block_shift));  in cache_create()
2815 	r = create_cache_policy(cache, ca, error);  in cache_create()
2819 	cache->policy_nr_args = ca->policy_argc;  in cache_create()
2822 	r = set_config_values(cache, ca->policy_argc, ca->policy_argv);  in cache_create()
2829 				     ca->block_size, may_format,  in cache_create()
2988 	struct cache_args *ca;  in cache_ctr()  local
2991 	ca = kzalloc(sizeof(*ca), GFP_KERNEL);  in cache_ctr()
2992 	if (!ca) {  in cache_ctr()
2996 	ca->ti = ti;  in cache_ctr()
2998 	r = parse_cache_args(ca, argc, argv, &ti->error);  in cache_ctr()
3002 	r = cache_create(ca, &cache);  in cache_ctr()
3015 	destroy_cache_args(ca);  in cache_ctr()