diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
new file mode 100644
index 5193df3..0a5b30a
*** a/doc/src/sgml/func.sgml
--- b/doc/src/sgml/func.sgml
*************** postgres=# SELECT * FROM pg_walfile_name
*** 20297,20303 ****
      The functions shown in <xref
      linkend="functions-admin-genfile-table"/> provide native access to
      files on the machine hosting the server. Only files within the
!     database cluster directory and the <varname>log_directory</varname> can be
      accessed unless the user is granted the role
      <literal>pg_read_server_files</literal>.  Use a relative path for files in
      the cluster directory, and a path matching the <varname>log_directory</varname>
--- 20297,20305 ----
      The functions shown in <xref
      linkend="functions-admin-genfile-table"/> provide native access to
      files on the machine hosting the server. Only files within the
!     database cluster directory (see <link
!     linkend="guc-data-directory"><varname>data_directory</varname></link>)
!     and the <varname>log_directory</varname> can be
      accessed unless the user is granted the role
      <literal>pg_read_server_files</literal>.  Use a relative path for files in
      the cluster directory, and a path matching the <varname>log_directory</varname>