From d6dfa5f59023191ec0917fe7aa4eddbd67311c08 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Wed, 19 Jul 2017 12:58:36 -0400
Subject: [PATCH] Doc: add missing note about permissions needed to change
 log_lock_waits.

log_lock_waits is PGC_SUSET, but config.sgml lacked the standard
boilerplate sentence noting that.

Report: https://postgr.es/m/20170719100838.19352.16320@wrigleys.postgresql.org
---
 doc/src/sgml/config.sgml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 036228df436..cbb207d59c5 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -4716,6 +4716,7 @@ FROM pg_stat_activity;
         longer than <xref linkend="guc-deadlock-timeout"> to acquire a
         lock.  This is useful in determining if lock waits are causing
         poor performance.  The default is <literal>off</>.
+        Only superusers can change this setting.
        </para>
       </listitem>
      </varlistentry>