1 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 61a56b100c62..309c9cec6e7c 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -910,6 +910,10 @@ running once the system is up.
         nfsroot=        [NFS] nfs root filesystem for disk-less boxes.
                         See Documentation/nfsroot.txt.
 
+        nfs.callback_tcpport=
+                        [NFS] set the TCP port on which the NFSv4 callback
+                        channel should listen.
+
         nmi_watchdog=   [KNL,BUGS=IA-32] Debugging features for SMP kernels
 
         no387           [BUGS=IA-32] Tells the kernel to use the 387 maths