JOURNAL_MAC_SIZE
static void section_mac(struct dm_integrity_c *ic, unsigned int section, __u8 result[JOURNAL_MAC_SIZE])
if (likely(size <= JOURNAL_MAC_SIZE)) {
memset(result + size, 0, JOURNAL_MAC_SIZE - size);
memcpy(result, digest, JOURNAL_MAC_SIZE);
memset(result, 0, JOURNAL_MAC_SIZE);
__u8 result[JOURNAL_MAC_SIZE];