There is already an 'add free space' phrase in front of this one, we
needn't to redo it.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
 
                trace_btrfs_reserve_extent(orig_root, block_group,
                                           search_start, num_bytes);
-               if (offset < search_start)
-                       btrfs_add_free_space(used_block_group, offset,
-                                            search_start - offset);
-               BUG_ON(offset > search_start);
                if (used_block_group != block_group)
                        btrfs_put_block_group(used_block_group);
                btrfs_put_block_group(block_group);