s3: add man page for vfs_crossrename

diff --git a/docs-xml/manpages-3/vfs_crossrename.8.xml b/docs-xml/manpages-3/vfs_crossrename.8.xml
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+<?xml version="1.0" encoding="iso-8859-1"?>
+<!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
+<refentry id="vfs_crossrename.8">
+
+<refmeta>
+       <refentrytitle>vfs_crossrename</refentrytitle>
+       <manvolnum>8</manvolnum>
+       <refmiscinfo class="source">Samba</refmiscinfo>
+       <refmiscinfo class="manual">System Administration tools</refmiscinfo>
+       <refmiscinfo class="version">3.6</refmiscinfo>
+</refmeta>
+
+
+<refnamediv>
+       <refname>vfs_crossrename</refname>
+       <refpurpose>server side rename files across filesystem boundaries</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+       <cmdsynopsis>
+               <command>vfs objects = crossrename</command>
+       </cmdsynopsis>
+</refsynopsisdiv>
+
+<refsect1>
+       <title>DESCRIPTION</title>
+
+       <para>This VFS module is part of the
+       <citerefentry><refentrytitle>samba</refentrytitle>
+       <manvolnum>7</manvolnum></citerefentry> suite.</para>
+
+       <para>The <command>vfs_crossrename</command> VFS module allows
+       server side rename operations even if source and target are on
+       differen physical devices. A "move" in Explorer is usually a
+       rename operation if it is inside of a single share or device.
+       Usually such a rename operation returns
+       NT_STATUS_NOT_SAME_DEVICE and the client has to move the file by
+       manual copy and delete operations. If the rename by copy is done by the
+       server this can be much more efficient. vfs_crossrename tries to do
+       this server-side cross-device rename operation. There are however
+       limitations that this module currently does not solve:
+
+       <variablelist>
+               <varlistentry>
+               the ACLs of files are not preserved
+               </varlistentry>
+               <varlistentry>
+               meta data in EAs are not preserved
+               </varlistentry>
+               <varlistentry>
+               renames of whole subdirectories cannot be done recursively,
+               in that case we still return STATUS_NOT_SAME_DEVICE and
+               let the client decide what to do
+               </varlistentry>
+               <varlistentry>
+               rename operations of huge files can cause hangs on the
+               client because clients expect a rename operation to
+               return fast
+               </varlistentry>
+       </variablelist>
+       </para>
+
+       <para>This module is stackable.</para>
+
+</refsect1>
+
+
+<refsect1>
+       <title>OPTIONS</title>
+
+       <variablelist>
+
+               <varlistentry>
+               <term>crossrename:sizelimit = BYTES</term>
+               <listitem>
+               <para>server-side cross-device-renames are only done
+               for files if the filesize is not larger than the defined
+               size in MiB to prevent timeouts. The default sizelimit is
+               20 (MiB)
+               </para>
+               </varlistentry>
+       </variablelist>
+</refsect1>
+
+<refsect1>
+       <title>EXAMPLES</title>
+
+       <para>To add server-side cross-device renames inside of a share
+       for all files sized up to 50MB:</para>
+
+<programlisting>
+        <smbconfsection name="[testshare]"/>
+       <smbconfoption name="path">/data/mounts</smbconfoption>
+       <smbconfoption name="vfs objects">crossrename</smbconfoption>
+       <smbconfoption name="crossrename:sizelimit">50</smbconfoption>
+</programlisting>
+</refsect1>
+
+<refsect1>
+       <title>VERSION</title>
+       <para>This man page is correct for version 3.6.0 of the Samba suite.
+       </para>
+</refsect1>
+
+<refsect1>
+       <title>AUTHOR</title>
+
+       <para>The original Samba software and related utilities
+       were created by Andrew Tridgell. Samba is now developed
+       by the Samba Team as an Open Source project similar
+       to the way the Linux kernel is developed.</para>
+
+</refsect1>
+
+</refentry>