diff options
Diffstat (limited to 'include/linux/rbtree.h')
| -rw-r--r-- | include/linux/rbtree.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h index f37006f21664..8d5382e62c08 100644 --- a/include/linux/rbtree.h +++ b/include/linux/rbtree.h @@ -132,6 +132,10 @@ static inline void rb_set_color(struct rb_node *rb, int color) #define RB_ROOT (struct rb_root) { NULL, } #define rb_entry(ptr, type, member) container_of(ptr, type, member) +#define RB_EMPTY_ROOT(root) ((root)->rb_node == NULL) +#define RB_EMPTY_NODE(node) (rb_parent(node) != node) +#define RB_CLEAR_NODE(node) (rb_set_parent(node, node)) + extern void rb_insert_color(struct rb_node *, struct rb_root *); extern void rb_erase(struct rb_node *, struct rb_root *); |