diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index e4b3fc07f1625e47dadef1922716595eba6e9506..e8b8e309e4abbc339db6ed185cb121b78fc96463 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8105,7 +8105,8 @@ static int alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
 			ins->objectid, ins->offset);
 		BUG();
 	}
-	trace_btrfs_reserved_extent_alloc(root, ins->objectid, ins->offset);
+	trace_btrfs_reserved_extent_alloc(fs_info->extent_root,
+					  ins->objectid, ins->offset);
 	return ret;
 }