2 files changed, 6 insertions, 2 deletions

diff --git a/Documentation/filesystems/00-INDEX b/Documentation/filesystems/00-INDEX
index 4dc28cc93503..571785887a4f 100644
--- a/Documentation/filesystems/00-INDEX
+++ b/Documentation/filesystems/00-INDEX
@@ -4,6 +4,8 @@ Exporting
         - explanation of how to make filesystems exportable.
 Locking
         - info on locking rules as they pertain to Linux VFS.
+9p.txt
+        - 9p (v9fs) is an implementation of the Plan 9 remote fs protocol.
 adfs.txt
         - info and mount options for the Acorn Advanced Disc Filing System.
 afs.txt
@@ -82,8 +84,6 @@ udf.txt
         - info and mount options for the UDF filesystem.
 ufs.txt
         - info on the ufs filesystem.
-v9fs.txt
-        - v9fs is a Unix implementation of the Plan 9 9p remote fs protocol.
 vfat.txt
         - info on using the VFAT filesystem used in Windows NT and Windows 95
 vfs.txt
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)