+/* Filesystem revision is 0, but feature flags are set */
+#define PR_0_FS_REV_LEVEL 0x00001A
+
+/* Clearing orphan inode */
+#define PR_0_ORPHAN_CLEAR_INODE 0x000020
+
+/* Illegal block found in orphaned inode */
+#define PR_0_ORPHAN_ILLEGAL_BLOCK_NUM 0x000021
+
+/* Already cleared block found in orphaned inode */
+#define PR_0_ORPHAN_ALREADY_CLEARED_BLOCK 0x000022
+
+/* Illegal orphan inode in superblock */
+#define PR_0_ORPHAN_ILLEGAL_HEAD_INODE 0x000023
+
+/* Illegal inode in orphaned inode list */
+#define PR_0_ORPHAN_ILLEGAL_INODE 0x000024
+
+/* Journal has unsupported read-only feature - abort */
+#define PR_0_JOURNAL_UNSUPP_ROCOMPAT 0x000025
+
+/* Journal has unsupported incompatible feature - abort */
+#define PR_0_JOURNAL_UNSUPP_INCOMPAT 0x000026
+
+/* Journal has unsupported version number */
+#define PR_0_JOURNAL_UNSUPP_VERSION 0x000027
+