radix_tree_node
struct radix_tree_node *rnode;
struct radix_tree_node *stack[RADIX_TREE_MAX_HEIGHT];
struct radix_tree_node *node;
struct radix_tree_node *node;
struct radix_tree_node *temp[RADIX_TREE_MAX_HEIGHT - 1];
struct radix_tree_node *node;
struct radix_tree_node *node;
struct radix_tree_node *next;