rb_root_linked
rb_add_linked(struct rb_node_linked *node, struct rb_root_linked *tree,
extern bool rb_erase_linked(struct rb_node_linked *, struct rb_root_linked *);
#define RB_ROOT_LINKED (struct rb_root_linked) { {NULL, }, NULL }
struct rb_root_linked rb_root;
bool rb_erase_linked(struct rb_node_linked *node, struct rb_root_linked *root)