Fix btrfs_inc_ref to add backref hints

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

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 7c953b2ecf15..057cdd49c09b 100644
--- 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;