1 files changed, 27 insertions, 2 deletions

diff --git a/fs/ocfs2/blockcheck.h b/fs/ocfs2/blockcheck.h
index 70ec3feda32f..d4b69febf70a 100644
--- a/fs/ocfs2/blockcheck.h
+++ b/fs/ocfs2/blockcheck.h
@@ -21,6 +21,24 @@
 #define OCFS2_BLOCKCHECK_H
 
 
+/* Count errors and error correction from blockcheck.c */
+struct ocfs2_blockcheck_stats {
+        spinlock_t b_lock;
+        u64 b_check_count;      /* Number of blocks we've checked */
+        u64 b_failure_count;    /* Number of failed checksums */
+        u64 b_recover_count;    /* Number of blocks fixed by ecc */
+
+        /*
+         * debugfs entries, used if this is passed to
+         * ocfs2_blockcheck_stats_debugfs_install()
+         */
+        struct dentry *b_debug_dir;     /* Parent of the debugfs  files */
+        struct dentry *b_debug_check;   /* Exposes b_check_count */
+        struct dentry *b_debug_failure; /* Exposes b_failure_count */
+        struct dentry *b_debug_recover; /* Exposes b_recover_count */
+};
+
+
 /* High level block API */
 void ocfs2_compute_meta_ecc(struct super_block *sb, void *data,
                             struct ocfs2_block_check *bc);
@@ -37,11 +55,18 @@ int ocfs2_validate_meta_ecc_bhs(struct super_block *sb,
 void ocfs2_block_check_compute(void *data, size_t blocksize,
                                struct ocfs2_block_check *bc);
 int ocfs2_block_check_validate(void *data, size_t blocksize,
-                               struct ocfs2_block_check *bc);
+                               struct ocfs2_block_check *bc,
+                               struct ocfs2_blockcheck_stats *stats);
 void ocfs2_block_check_compute_bhs(struct buffer_head **bhs, int nr,
                                    struct ocfs2_block_check *bc);
 int ocfs2_block_check_validate_bhs(struct buffer_head **bhs, int nr,
-                                   struct ocfs2_block_check *bc);
+                                   struct ocfs2_block_check *bc,
+                                   struct ocfs2_blockcheck_stats *stats);
+
+/* Debug Initialization */
+int ocfs2_blockcheck_stats_debugfs_install(struct ocfs2_blockcheck_stats *stats,
+                                           struct dentry *parent);
+void ocfs2_blockcheck_stats_debugfs_remove(struct ocfs2_blockcheck_stats *stats);
 
 /*
  * Hamming code functions