509 	int ret;  in zswap_pool_create()  local
543 	ret = cpuhp_state_add_instance(CPUHP_MM_ZSWP_POOL_PREPARE,  in zswap_pool_create()
545 	if (ret)  in zswap_pool_create()
671 	int ret;  in __zswap_param_set()  local
720 		ret = param_set_charp(s, kp);  in __zswap_param_set()
722 		ret = -EINVAL;  in __zswap_param_set()
726 	if (!ret) {  in __zswap_param_set()
749 		ret = param_set_charp(s, kp);  in __zswap_param_set()
758 	return ret;  in __zswap_param_set()
851 	int ret;  in zswap_writeback_entry()  local
877 		ret = -ENOMEM;  in zswap_writeback_entry()
883 		ret = -EEXIST;  in zswap_writeback_entry()
892 		ret = crypto_comp_decompress(tfm, src, entry->length,  in zswap_writeback_entry()
896 		BUG_ON(ret);  in zswap_writeback_entry()
942 	return ret;  in zswap_writeback_entry()
948 	int ret;  in zswap_shrink()  local
954 	ret = zpool_shrink(pool->zpool, 1, NULL);  in zswap_shrink()
958 	return ret;  in zswap_shrink()
993 	int ret;  in zswap_frontswap_store()  local
1003 		ret = -EINVAL;  in zswap_frontswap_store()
1008 		ret = -ENODEV;  in zswap_frontswap_store()
1017 			ret = -ENOMEM;  in zswap_frontswap_store()
1026 			ret = -ENOMEM;  in zswap_frontswap_store()
1035 		ret = -ENOMEM;  in zswap_frontswap_store()
1055 		ret = -EINVAL;  in zswap_frontswap_store()
1063 	ret = crypto_comp_compress(tfm, src, PAGE_SIZE, dst, &dlen);  in zswap_frontswap_store()
1066 	if (ret) {  in zswap_frontswap_store()
1067 		ret = -EINVAL;  in zswap_frontswap_store()
1076 	ret = zpool_malloc(entry->pool->zpool, hlen + dlen, gfp, &handle);  in zswap_frontswap_store()
1077 	if (ret == -ENOSPC) {  in zswap_frontswap_store()
1081 	if (ret) {  in zswap_frontswap_store()
1100 		ret = zswap_rb_insert(&tree->rbroot, entry, &dupentry);  in zswap_frontswap_store()
1101 		if (ret == -EEXIST) {  in zswap_frontswap_store()
1107 	} while (ret == -EEXIST);  in zswap_frontswap_store()
1122 	return ret;  in zswap_frontswap_store()
1137 	int ret;  in zswap_frontswap_load()  local
1163 	ret = crypto_comp_decompress(tfm, src, entry->length, dst, &dlen);  in zswap_frontswap_load()
1167 	BUG_ON(ret);  in zswap_frontswap_load()
1301 	int ret;  in init_zswap()  local
1310 	ret = cpuhp_setup_state(CPUHP_MM_ZSWP_MEM_PREPARE, "mm/zswap:prepare",  in init_zswap()
1312 	if (ret) {  in init_zswap()
1317 	ret = cpuhp_setup_state_multi(CPUHP_MM_ZSWP_POOL_PREPARE,  in init_zswap()
1321 	if (ret)  in init_zswap()