mapping_node
struct mapping_node *node;
node = rb_entry(rb_node, struct mapping_node, rb_node);
struct mapping_node *node, *tmp;
struct mapping_node *node;
struct mapping_node AUTO_KFREE(node);
node = rb_entry(rb_node, struct mapping_node, rb_node);
struct mapping_node *node = NULL;
node = rb_entry(rb_node, struct mapping_node, rb_node);