diff --git a/Doc/library/gc.rst b/Doc/library/gc.rst
index 70e4a6b..9ebbf06 100644
--- a/Doc/library/gc.rst
+++ b/Doc/library/gc.rst
@@ -47,6 +47,12 @@
    .. versionchanged:: 2.5
       The optional *generation* argument was added.
 
+   .. versionchanged:: 2.6
+      The free lists maintained for a number of builtin types are cleared
+      whenever a full collection or collection of the highest generation (2)
+      is run.  Not all items in some free lists may be freed due to the
+      particular implementation, in particular :class:`int` and :class:`float`.
+
 
 .. function:: set_debug(flags)
 
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index 2e39633..22397f2 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -58,22 +58,6 @@
    A string containing the copyright pertaining to the Python interpreter.
 
 
-.. function:: _compact_freelists()
-
-   Compact the free lists of integers and floats by deallocating unused blocks.
-   It can reduce the memory usage of the Python process several tenth of
-   thousands of integers or floats have been allocated at once.
-
-   The return value is a tuple of tuples each containing three elements,
-   amount of used objects, total block count before the blocks are deallocated
-   and amount of freed blocks. The first tuple refers to ints, the second to
-   floats.
-
-   This function should be used for specialized purposes only.
-
-   .. versionadded:: 2.6
-
-
 .. function:: _clear_type_cache()
 
    Clear the internal type cache. The type cache is used to speed up attribute