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)) {