From e9f451accbde17d106ac6a92c8877992d4410629 Mon Sep 17 00:00:00 2001
From: David Rowley <drowley@postgresql.org>
Date: Sun, 16 Apr 2023 21:47:01 +1200
Subject: [PATCH] Doc: add note about --buffer-usage-limit being v16 onwards

Other vacuumdb options seem to have notes about which version they're
available from, so let's follow this trend for the newly added
--buffer-usage-limit option.
---
 doc/src/sgml/ref/vacuumdb.sgml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/src/sgml/ref/vacuumdb.sgml b/doc/src/sgml/ref/vacuumdb.sgml
index caf97af215..35600ec749 100644
--- a/doc/src/sgml/ref/vacuumdb.sgml
+++ b/doc/src/sgml/ref/vacuumdb.sgml
@@ -131,6 +131,12 @@ PostgreSQL documentation
         This size is used to calculate the number of shared buffers which will
         be reused as part of this strategy.  See <xref linkend="sql-vacuum"/>.
        </para>
+       <note>
+        <para>
+         This option is only available for servers running
+         <productname>PostgreSQL</productname> 16 and later.
+        </para>
+       </note>
       </listitem>
      </varlistentry>