Btrfs: Retry metadata reads in the face of checksum failures

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index efce173a935c..ff4e9c6859d1 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -569,7 +569,16 @@ static int check_leaf(struct btrfs_root *root, struct btrfs_path *path,
 static int noinline check_block(struct btrfs_root *root,
                                 struct btrfs_path *path, int level)
 {
-        return 0;
+        u64 found_start;
+        if (btrfs_header_level(path->nodes[level]) != level)
+            printk("warning: bad level %Lu wanted %d found %d\n",
+                   path->nodes[level]->start, level,
+                   btrfs_header_level(path->nodes[level]));
+        found_start = btrfs_header_bytenr(path->nodes[level]);
+        if (found_start != path->nodes[level]->start) {
+            printk("warning: bad bytentr %Lu found %Lu\n",
+                   path->nodes[level]->start, found_start);
+        }
 #if 0
         struct extent_buffer *buf = path->nodes[level];