Some example of insert and search follows here. The search is a plain
normal search over an ordered tree. The insert instead must be implemented
- int two steps: as first thing the code must insert the element in
- order as a red leaf in the tree, then the support library function
- rb_insert_color() must be called. Such function will do the
- not trivial work to rebalance the rbtree if necessary.
+ in two steps: First, the code must insert the element in order as a red leaf
+ in the tree, and then the support library function rb_insert_color() must
+ be called. Such function will do the not trivial work to rebalance the
+ rbtree, if necessary.
-----------------------------------------------------------------------
static inline struct page * rb_search_page_cache(struct inode * inode,
struct rb_root
{
struct rb_node *rb_node;
+ void (*augment_cb)(struct rb_node *node);
};
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)