interval_tree_span_iter_first
interval_tree_span_iter_first(&iter->spans[i], iter->itrees[i],
void interval_tree_span_iter_first(struct interval_tree_span_iter *state,
for (interval_tree_span_iter_first(span, itree, \
interval_tree_span_iter_first(iter, itree, new_index,
EXPORT_SYMBOL_GPL(interval_tree_span_iter_first);