#7647: add ST_RDONLY, ST_NOSUID constants to os module.
(Also fix a name ordering in the ACKS file.)
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 3a7b599..9ab5fb1 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -1342,6 +1342,14 @@
    :attr:`f_bavail`, :attr:`f_files`, :attr:`f_ffree`, :attr:`f_favail`,
    :attr:`f_flag`, :attr:`f_namemax`.
 
+   Two module-level constants are defined for the :attr:`f_flag` attribute's
+   bit-flags: if :const:`ST_RDONLY` is set, the filesystem is mounted
+   read-only, and if :const:`ST_NOSUID` is set, the semantics of
+   setuid/setgid bits are disabled or not supported.
+
+   .. versionchanged:: 3.2
+      The :const:`ST_RDONLY` and :const:`ST_NOSUID` constants were added.
+
    Availability: Unix.
 
 
diff --git a/Doc/whatsnew/3.2.rst b/Doc/whatsnew/3.2.rst
index 1799b70..81cfa83 100644
--- a/Doc/whatsnew/3.2.rst
+++ b/Doc/whatsnew/3.2.rst
@@ -111,6 +111,10 @@
   programmer aware that his code contains object finalization issues.
   (Added by Antoine Pitrou; :issue:`477863`.)
 
+* The :mod:`os` module now has the :const:`ST_RDONLY` and :const:`ST_NOSUID`
+  constants, for use with the :func:`~os.statvfs` function.
+  (Patch by Adam Jackson; :issue:`7647`.)
+
 * The :func:`shutil.copytree` function has two new options:
 
   * *ignore_dangling_symlinks*: when ``symlinks=False`` (meaning that the