s_journal_uuid    476 fs/ext2/ext2.h 	__u8	s_journal_uuid[16];	/* uuid of journal superblock */
s_journal_uuid   1278 fs/ext4/ext4.h /*D0*/	__u8	s_journal_uuid[16];	/* uuid of journal superblock */
s_journal_uuid   4884 fs/ext4/super.c 	if (memcmp(EXT4_SB(sb)->s_es->s_journal_uuid, es->s_uuid, 16)) {