1 files changed, 3 insertions, 1 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 2cee9df001f6..cb04a70eb7e8 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -35,8 +35,10 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
         key.offset = num_blocks;
         ret = btrfs_search_slot(trans, root->fs_info->extent_root, &key, path,
                                 0, 1);
-        if (ret != 0)
+        if (ret != 0) {
+printk("can't find block %Lu %Lu\n", blocknr, num_blocks);
                 BUG();
+        }
         BUG_ON(ret != 0);
         l = btrfs_buffer_leaf(path->nodes[0]);
         item = btrfs_item_ptr(l, path->slots[0], struct btrfs_extent_item);