radix_tree_for_each_tagged
radix_tree_for_each_tagged(slot, root, &iter, first_index, tag) {
radix_tree_for_each_tagged(slot, root, &iter, first_index, tag) {
radix_tree_for_each_tagged(slot, root, &iter, 0, 0)
radix_tree_for_each_tagged(slot, &root, &iter, 0, 0) {
radix_tree_for_each_tagged(slot, &root, &iter, 0, 0) {