1 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/filesystems/9p.txt b/Documentation/filesystems/9p.txt
index 4d075a4558f9..bbd8b28c13de 100644
--- a/Documentation/filesystems/9p.txt
+++ b/Documentation/filesystems/9p.txt
@@ -40,6 +40,10 @@ OPTIONS
   aname=name    aname specifies the file tree to access when the server is
                 offering several exported file systems.
 
+  cache=mode    specifies a cacheing policy.  By default, no caches are used.
+                        loose = no attempts are made at consistency,
+                                intended for exclusive, read-only mounts
+
   debug=n       specifies debug level.  The debug level is a bitmask.
                         0x01 = display verbose error messages
                         0x02 = developer debug (DEBUG_CURRENT)