[linux-cifs-client] [PATCH] doc: add information about nounix mount option

[Suresh Jayaraman]

Also clarify the use of UniqueID when serverino is used with nounix.
Thanks to Jeff Layton for explaining the no so clear details.

Signed-off-by: Suresh Jayaraman <sjayaraman at suse.de>
---
 docs-xml/manpages-3/mount.cifs.8.xml |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/docs-xml/manpages-3/mount.cifs.8.xml b/docs-xml/manpages-3/mount.cifs.8.xml
index 372b477..aa62334 100644
--- a/docs-xml/manpages-3/mount.cifs.8.xml
+++ b/docs-xml/manpages-3/mount.cifs.8.xml
@@ -483,6 +483,23 @@ permissions in memory that can't be stored on the server. This information can d
         </varlistentry>
 
         <varlistentry>
+		<term>nounix</term>
+		<listitem><para>Disable the CIFS Unix Extensions for this
+		mount. This can be useful in order to turn off multiple settings
+		all at once (i.e. POSIX acls, POSIX locks, POSIX paths, symlink
+		support and retrieving uids/gids/mode from the server) or to
+		workaround a bug in server that support the Unix Extensions.
+		</para>
+		<para>
+		When Unix Extensions are disabled and "serverino" mount option
+		is enabled there is no way to get the server inode number.
+		So a "UniqueID" from the server is used, instead. UniqueID's are
+		often greater than 2 power 32. To avoid this make sure you
+		build your programs with LFS support.
+		</para></listitem>
+        </varlistentry>
+
+        <varlistentry>
                 <term>nouser_xattr</term>
                 <listitem><para>(default) Do not allow getfattr/setfattr to get/set xattrs, even if server would support it otherwise. </para></listitem>
         </varlistentry>