diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c
index 4c81ffe123857416a394959c20895172d7418f5a..368c349c5669ce8b4249d3b43a0aae7aa7efe717 100644
--- a/fs/btrfs/reada.c
+++ b/fs/btrfs/reada.c
@@ -442,6 +442,8 @@ static struct reada_extent *reada_find_extent(struct btrfs_fs_info *fs_info,
 		}
 		have_zone = 1;
 	}
+	if (!have_zone)
+		radix_tree_delete(&fs_info->reada_tree, index);
 	spin_unlock(&fs_info->reada_lock);
 	btrfs_dev_replace_read_unlock(&fs_info->dev_replace);