keynode
tmp = malloc(sizeof(struct keynode));
ins = container_of(rb_node, struct keynode, node);
ins = container_of(rb_node, struct keynode, node);
tmp = container_of(rb_node, struct keynode, node);
static struct keynode *
rb_find(struct rb_root *head, struct keynode *elm)
struct keynode *n = container_of(tmp, struct keynode, node);
static struct keynode *
rb_insert(struct rb_root *head, struct keynode *elm)
struct keynode *n = container_of(*tmp, struct keynode, node);
struct keynode *tmp, *ins;