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diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 122f034f177..6257563eaad 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -19540,6 +19540,71 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
 
   </sect2>
 
+  <sect2 id="functions-admin-checksum">
+   <title>Data Checksum Functions</title>
+
+   <para>
+    The functions shown in <xref linkend="functions-checksums-table" /> can
+    be used to enable or disable data checksums in a running cluster.
+    See <xref linkend="checksums" /> for details.
+   </para>
+
+   <table id="functions-checksums-table">
+    <title>Checksum <acronym>SQL</acronym> Functions</title>
+    <tgroup cols="3">
+     <thead>
+      <row>
+       <entry>Function</entry>
+       <entry>Return Type</entry>
+       <entry>Description</entry>
+      </row>
+     </thead>
+     <tbody>
+      <row>
+       <entry>
+        <indexterm>
+         <primary>pg_enable_data_checksums</primary>
+        </indexterm>
+        <literal><function>pg_enable_data_checksums(<optional><parameter>cost_delay</parameter> <type>int</type>, <parameter>cost_limit</parameter> <type>int</type></optional>)</function></literal>
+       </entry>
+       <entry>
+        void
+       </entry>
+       <entry>
+        <para>
+         Initiates data checksums for the cluster. This will switch the data checksums mode
+         to <literal>in progress</literal> and start a background worker that will process
+         all data in the database and enable checksums for it. When all data pages have had
+         checksums enabled, the cluster will automatically switch to checksums
+         <literal>on</literal>.
+        </para>
+        <para>
+         If <parameter>cost_delay</parameter> and <parameter>cost_limit</parameter> are
+         specified, the speed of the process is throttled using the same principles as
+         <link linkend="runtime-config-resource-vacuum-cost">Cost-based Vacuum Delay</link>.
+        </para>
+       </entry>
+      </row>
+      <row>
+       <entry>
+        <indexterm>
+         <primary>pg_disable_data_checksums</primary>
+        </indexterm>
+        <literal><function>pg_disable_data_checksums()</function></literal>
+       </entry>
+       <entry>
+        void
+       </entry>
+       <entry>
+        Disables data checksums for the cluster.
+       </entry>
+      </row>
+     </tbody>
+    </tgroup>
+   </table>
+
+  </sect2>
+
   <sect2 id="functions-admin-dbobject">
    <title>Database Object Management Functions</title>