diff --git a/winsup/doc/ChangeLog b/winsup/doc/ChangeLog
index 5424701af..09b3325c4 100644
--- a/winsup/doc/ChangeLog
+++ b/winsup/doc/ChangeLog
@@ -1,3 +1,8 @@
+2014-10-22  Corinna Vinschen  <corinna@vinschen.de>
+
+	* posix.xml (std-gnu): Add ffsl, ffsll, quotactl.
+	(std-notes): Add restrictions of quotactl.
+
 2014-10-22  Yaakov Selkowitz  <yselkowi@redhat.com>
 
 	* new-features.xml (ov-new1.7.33): Document stime.
diff --git a/winsup/doc/posix.xml b/winsup/doc/posix.xml
index 9d7c186d7..238153803 100644
--- a/winsup/doc/posix.xml
+++ b/winsup/doc/posix.xml
@@ -1141,6 +1141,8 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
     feenableexcept
     fedisableexcept
     fegetexcept
+    ffsl
+    ffsll
     fgetxattr
     flistxattr
     fopencookie
@@ -1173,6 +1175,7 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
     pthread_getattr_np
     pthread_sigqueue
     ptsname_r
+    quotactl
     rawmemchr
     removexattr
     scandirat
@@ -1561,6 +1564,10 @@ return -1 and set errno to ENOSYS.  <function>grantpt</function> and
 <function>msgrcv</function> and <function>msgsnd</function> are only
 available when cygserver is running.</para>
 
+<para>The Linux-specific function <function>quotactl</function> only implements
+what works on Windows:  Windows only supports user block quotas on NTFS, no
+group quotas, no inode quotas, no time constraints.</para>
+
 </sect1>
 
 </chapter>