diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index 4032680e629d..f58e97446abc 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -28,8 +28,8 @@
  * The available bitmap operations and their rough meaning in the
  * case that the bitmap is a single unsigned long are thus:
  *
- * Note that nbits should be always a compile time evaluable constant.
- * Otherwise many inlines will generate horrible code.
+ * The generated code is more efficient when nbits is known at
+ * compile-time and at most BITS_PER_LONG.
  *
  * ::
  *