-#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)