ext4: Save error information to the superblock for analysis

[pandora-kernel.git] / fs / ext4 / ext4.h

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 0889381..6b96125 100644 (file)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1011,9 +1011,24 @@ struct ext4_super_block {
                                              snapshot's future use */
        __le32  s_snapshot_list;        /* inode number of the head of the
                                           on-disk snapshot list */
-       __u32   s_reserved[155];        /* Padding to the end of the block */
+#define EXT4_S_ERR_START offsetof(struct ext4_super_block, s_error_count)
+       __le32  s_error_count;          /* number of fs errors */
+       __le32  s_first_error_time;     /* first time an error happened */
+       __le32  s_first_error_ino;      /* inode involved in first error */
+       __le64  s_first_error_block;    /* block involved of first error */
+       __u8    s_first_error_func[32]; /* function where the error happened */
+       __le32  s_first_error_line;     /* line number where error happened */
+       __le32  s_last_error_time;      /* most recent time of an error */
+       __le32  s_last_error_ino;       /* inode involved in last error */
+       __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_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START)
+
 #ifdef __KERNEL__
 
 /*