diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 9ca3637..ed14e1d 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1025,8 +1025,9 @@
 	__le32	s_last_error_line;	/* line number where error happened */
 	__le64	s_last_error_block;	/* block involved of last error */
 	__u8	s_last_error_func[32];	/* function where the error happened */
-#define EXT4_S_ERR_END offsetof(struct ext4_super_block, s_reserved)
-	__le32   s_reserved[128];        /* Padding to the end of the block */
+#define EXT4_S_ERR_END offsetof(struct ext4_super_block, s_mount_opts)
+	__u8	s_mount_opts[64];
+	__le32	s_reserved[112];        /* Padding to the end of the block */
 };
 
 #define EXT4_S_ERR_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START)
@@ -1341,6 +1342,10 @@
 #define EXT4_DEFM_JMODE_DATA	0x0020
 #define EXT4_DEFM_JMODE_ORDERED	0x0040
 #define EXT4_DEFM_JMODE_WBACK	0x0060
+#define EXT4_DEFM_NOBARRIER	0x0100
+#define EXT4_DEFM_BLOCK_VALIDITY 0x0200
+#define EXT4_DEFM_DISCARD	0x0400
+#define EXT4_DEFM_NODELALLOC	0x0800
 
 /*
  * Default journal batch times