X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=include%2Flinux%2Frbtree.h;h=344bc3495ddbd12548c32ebaf57cd3c6ee7e8be9;hb=9a64388d83f6ef08dfff405a9d122e3dbcb6bf38;hp=3cc30b0ab8283768e8552a5aaed4a0558fd88c64;hpb=e977145aeaad23d443686f2a2d5b32800d1607c5;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h
index 3cc30b0ab82..344bc3495dd 100644
--- a/include/linux/rbtree.h
+++ b/include/linux/rbtree.h
@@ -99,7 +99,7 @@ static inline struct page * rb_insert_page_cache(struct inode * inode,
 
 struct rb_node
 {
-	unsigned long  rb_parent_colour;
+	unsigned long  rb_parent_color;
 #define	RB_RED		0
 #define	RB_BLACK	1
 	struct rb_node *rb_right;
@@ -113,25 +113,29 @@ struct rb_root
 };
 
 
-#define rb_parent(r)   ((struct rb_node *)((r)->rb_parent_colour & ~3))
-#define rb_colour(r)   ((r)->rb_parent_colour & 1)
-#define rb_is_red(r)   (!rb_colour(r))
-#define rb_is_black(r) rb_colour(r)
-#define rb_set_red(r)  do { (r)->rb_parent_colour &= ~1; } while (0)
-#define rb_set_black(r)  do { (r)->rb_parent_colour |= 1; } while (0)
+#define rb_parent(r)   ((struct rb_node *)((r)->rb_parent_color & ~3))
+#define rb_color(r)   ((r)->rb_parent_color & 1)
+#define rb_is_red(r)   (!rb_color(r))
+#define rb_is_black(r) rb_color(r)
+#define rb_set_red(r)  do { (r)->rb_parent_color &= ~1; } while (0)
+#define rb_set_black(r)  do { (r)->rb_parent_color |= 1; } while (0)
 
 static inline void rb_set_parent(struct rb_node *rb, struct rb_node *p)
 {
-	rb->rb_parent_colour = (rb->rb_parent_colour & 3) | (unsigned long)p;
+	rb->rb_parent_color = (rb->rb_parent_color & 3) | (unsigned long)p;
 }
-static inline void rb_set_colour(struct rb_node *rb, int colour)
+static inline void rb_set_color(struct rb_node *rb, int color)
 {
-	rb->rb_parent_colour = (rb->rb_parent_colour & ~1) | colour;
+	rb->rb_parent_color = (rb->rb_parent_color & ~1) | 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 *);
 
@@ -148,7 +152,7 @@ extern void rb_replace_node(struct rb_node *victim, struct rb_node *new,
 static inline void rb_link_node(struct rb_node * node, struct rb_node * parent,
 				struct rb_node ** rb_link)
 {
-	node->rb_parent_colour = (unsigned long )parent;
+	node->rb_parent_color = (unsigned long )parent;
 	node->rb_left = node->rb_right = NULL;
 
 	*rb_link = node;