f2fs_radix_tree_insert
f2fs_radix_tree_insert(&eti->extent_tree_root, ino, et);
f2fs_radix_tree_insert(&gc_list->iroot, inode->i_ino, new_ie);
f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne);
f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head);