Fix btrfs_inc_ref to add backref hints

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

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 7c953b2ecf153bbd0a101b9d6a30767acba75381..057cdd49c09b5413a9e62481dd320e931a7c0578 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -702,7 +702,7 @@ int btrfs_inc_root_ref(struct btrfs_trans_handle *trans,
        }
        return btrfs_inc_extent_ref(trans, root, root->node->start,
                                    root->node->len, owner_objectid,
-                                   generation, 0, 0);
+                                   generation, key_objectid, level);
 }
 
 int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
@@ -746,10 +746,12 @@ int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
                        }
                } else {
                        bytenr = btrfs_node_blockptr(buf, i);
+                       btrfs_node_key_to_cpu(buf, &key, i);
                        ret = btrfs_inc_extent_ref(trans, root, bytenr,
                                           btrfs_level_size(root, level - 1),
                                           root->root_key.objectid,
-                                          trans->transid, 0, 0);
+                                          trans->transid, key.objectid,
+                                          level - 1);
                        if (ret) {
                                faili = i;
                                goto fail;