From d3cc1b2ff087cd68f281dad33743640dffbe01d1 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Wed, 3 Jul 2013 14:25:06 -0400
Subject: [PATCH] pg_buffercache: document column meanings Improve
 documentation for usagecount and relforknumber. Backpatch to 9.3 Suggestion
 from Satoshi Nagayasu

---
 doc/src/sgml/pgbuffercache.sgml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/doc/src/sgml/pgbuffercache.sgml b/doc/src/sgml/pgbuffercache.sgml
index 1d7d95f9d7..685351f11e 100644
--- a/doc/src/sgml/pgbuffercache.sgml
+++ b/doc/src/sgml/pgbuffercache.sgml
@@ -84,7 +84,8 @@
       <entry><structfield>relforknumber</structfield></entry>
       <entry><type>smallint</type></entry>
       <entry></entry>
-      <entry>Fork number within the relation</entry>
+      <entry>Fork number within the relation;  see
+      <filename>include/storage/relfilenode.h</></entry>
      </row>
 
      <row>
@@ -98,7 +99,7 @@
       <entry><structfield>usagecount</structfield></entry>
       <entry><type>smallint</type></entry>
       <entry></entry>
-      <entry>Page LRU count</entry>
+      <entry>Clock-sweep access count</entry>
      </row>
 
     </tbody>
-- 
2.40.0