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-rw-r--r--include/linux/rbtree.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h
index 9c295411d01f..8e33a256ea0e 100644
--- a/include/linux/rbtree.h
+++ b/include/linux/rbtree.h
@@ -110,6 +110,7 @@ struct rb_node
struct rb_root
{
struct rb_node *rb_node;
+ void (*augment_cb)(struct rb_node *node);
};
@@ -129,7 +130,9 @@ static inline void rb_set_color(struct rb_node *rb, int color)
rb->rb_parent_color = (rb->rb_parent_color & ~1) | color;
}
-#define RB_ROOT (struct rb_root) { NULL, }
+#define RB_ROOT (struct rb_root) { NULL, NULL, }
+#define RB_AUGMENT_ROOT(x) (struct rb_root) { NULL, x}
+
#define rb_entry(ptr, type, member) container_of(ptr, type, member)
#define RB_EMPTY_ROOT(root) ((root)->rb_node == NULL)