1 files changed, 33 insertions, 9 deletions

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index d05f3caec410..86f500c5d63d 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -118,10 +118,12 @@ static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
 static int ocfs2_check_volume(struct ocfs2_super *osb);
 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
                                struct buffer_head *bh,
-                               u32 sectsize);
+                               u32 sectsize,
+                               struct ocfs2_blockcheck_stats *stats);
 static int ocfs2_initialize_super(struct super_block *sb,
                                   struct buffer_head *bh,
-                                  int sector_size);
+                                  int sector_size,
+                                  struct ocfs2_blockcheck_stats *stats);
 static int ocfs2_get_sector(struct super_block *sb,
                             struct buffer_head **bh,
                             int block,
@@ -711,7 +713,8 @@ out:
 
 static int ocfs2_sb_probe(struct super_block *sb,
                           struct buffer_head **bh,
-                          int *sector_size)
+                          int *sector_size,
+                          struct ocfs2_blockcheck_stats *stats)
 {
         int status, tmpstat;
         struct ocfs1_vol_disk_hdr *hdr;
@@ -777,7 +780,8 @@ static int ocfs2_sb_probe(struct super_block *sb,
                         goto bail;
                 }
                 di = (struct ocfs2_dinode *) (*bh)->b_data;
-                status = ocfs2_verify_volume(di, *bh, blksize);
+                memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
+                status = ocfs2_verify_volume(di, *bh, blksize, stats);
                 if (status >= 0)
                         goto bail;
                 brelse(*bh);
@@ -983,6 +987,7 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
         struct ocfs2_super *osb = NULL;
         struct buffer_head *bh = NULL;
         char nodestr[8];
+        struct ocfs2_blockcheck_stats stats;
 
         mlog_entry("%p, %p, %i", sb, data, silent);
 
@@ -992,13 +997,13 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
         }
 
         /* probe for superblock */
-        status = ocfs2_sb_probe(sb, &bh, &sector_size);
+        status = ocfs2_sb_probe(sb, &bh, &sector_size, &stats);
         if (status < 0) {
                 mlog(ML_ERROR, "superblock probe failed!\n");
                 goto read_super_error;
         }
 
-        status = ocfs2_initialize_super(sb, bh, sector_size);
+        status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
         osb = OCFS2_SB(sb);
         if (status < 0) {
                 mlog_errno(status);
@@ -1108,6 +1113,18 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
                 goto read_super_error;
         }
 
+        if (ocfs2_meta_ecc(osb)) {
+                status = ocfs2_blockcheck_stats_debugfs_install(
+                                                &osb->osb_ecc_stats,
+                                                osb->osb_debug_root);
+                if (status) {
+                        mlog(ML_ERROR,
+                             "Unable to create blockcheck statistics "
+                             "files\n");
+                        goto read_super_error;
+                }
+        }
+
         status = ocfs2_mount_volume(sb);
         if (osb->root_inode)
                 inode = igrab(osb->root_inode);
@@ -1849,6 +1866,7 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
         if (osb->cconn)
                 ocfs2_dlm_shutdown(osb, hangup_needed);
 
+        ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
         debugfs_remove(osb->osb_debug_root);
 
         if (hangup_needed)
@@ -1896,7 +1914,8 @@ static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uu
 
 static int ocfs2_initialize_super(struct super_block *sb,
                                   struct buffer_head *bh,
-                                  int sector_size)
+                                  int sector_size,
+                                  struct ocfs2_blockcheck_stats *stats)
 {
         int status;
         int i, cbits, bbits;
@@ -1955,6 +1974,9 @@ static int ocfs2_initialize_super(struct super_block *sb,
         atomic_set(&osb->alloc_stats.bg_allocs, 0);
         atomic_set(&osb->alloc_stats.bg_extends, 0);
 
+        /* Copy the blockcheck stats from the superblock probe */
+        osb->osb_ecc_stats = *stats;
+
         ocfs2_init_node_maps(osb);
 
         snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
@@ -2192,7 +2214,8 @@ bail:
  */
 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
                                struct buffer_head *bh,
-                               u32 blksz)
+                               u32 blksz,
+                               struct ocfs2_blockcheck_stats *stats)
 {
         int status = -EAGAIN;
 
@@ -2205,7 +2228,8 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
                     OCFS2_FEATURE_INCOMPAT_META_ECC) {
                         status = ocfs2_block_check_validate(bh->b_data,
                                                             bh->b_size,
-                                                            &di->i_check);
+                                                            &di->i_check,
+                                                            stats);
                         if (status)
                                 goto out;
                 }