63 	size_t datalen = prep->datalen;  in big_key_preparse()  local
64 	size_t enclen = datalen + CHACHA20POLY1305_AUTHTAG_SIZE;  in big_key_preparse()
69 	if (datalen <= 0 || datalen > 1024 * 1024 || !prep->data)  in big_key_preparse()
75 	payload->length = datalen;  in big_key_preparse()
77 	if (datalen > BIG_KEY_FILE_THRESHOLD) {  in big_key_preparse()
102 		chacha20poly1305_encrypt(buf, prep->data, datalen, NULL, 0,  in big_key_preparse()
130 		void *data = kmalloc(datalen, GFP_KERNEL);  in big_key_preparse()
136 		memcpy(data, prep->data, prep->datalen);  in big_key_preparse()
156 	if (prep->datalen > BIG_KEY_FILE_THRESHOLD)  in big_key_free_preparse()
198 	ret = key_payload_reserve(key, prep->datalen);  in big_key_update()
230 	size_t datalen = payload->length;  in big_key_read()  local
233 	if (!buffer || buflen < datalen)  in big_key_read()
234 		return datalen;  in big_key_read()
236 	if (datalen > BIG_KEY_FILE_THRESHOLD) {  in big_key_read()
239 		size_t enclen = datalen + CHACHA20POLY1305_AUTHTAG_SIZE;  in big_key_read()
265 		ret = datalen;  in big_key_read()
268 		memcpy(buffer, buf, datalen);  in big_key_read()
275 		ret = datalen;  in big_key_read()
276 		memcpy(buffer, payload->data, datalen);  in big_key_read()