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-rw-r--r--include/linux/rbtree.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h
index 5210a5c60877..7066acb2c530 100644
--- a/include/linux/rbtree.h
+++ b/include/linux/rbtree.h
@@ -139,6 +139,14 @@ static inline void rb_set_color(struct rb_node *rb, int color)
extern void rb_insert_color(struct rb_node *, struct rb_root *);
extern void rb_erase(struct rb_node *, struct rb_root *);
+typedef void (*rb_augment_f)(struct rb_node *node, void *data);
+
+extern void rb_augment_insert(struct rb_node *node,
+ rb_augment_f func, void *data);
+extern struct rb_node *rb_augment_erase_begin(struct rb_node *node);
+extern void rb_augment_erase_end(struct rb_node *node,
+ rb_augment_f func, void *data);
+
/* Find logical next and previous nodes in a tree */
extern struct rb_node *rb_next(const struct rb_node *);
extern struct rb_node *rb_prev(const struct rb_node *);