ocfs2: bump up o2cb network protocol version

Two new messages are added to support negotiating hb timeout.  Stop
nodes frmo talking an old version to mount as they will cause the
negotiation to fail.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Junxiao Bi <[email protected]>
Reviewed-by: Mark Fasheh <[email protected]>
Cc: Joel Becker <[email protected]>
Cc: Joseph Qi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

fs/ocfs2/cluster/tcp_internal.h

@@ -44,6 +44,9 @@
  * version here in tcp_internal.h should not need to be bumped for
  * filesystem locking changes.
  *
+ * New in version 12
+ *	- Negotiate hb timeout when storage is down.
+ *
  * New in version 11
  * 	- Negotiation of filesystem locking in the dlm join.
  *
@@ -75,7 +78,7 @@
  * 	- full 64 bit i_size in the metadata lock lvbs
  * 	- introduction of "rw" lock and pushing meta/data locking down
  */
-#define O2NET_PROTOCOL_VERSION 11ULL
+#define O2NET_PROTOCOL_VERSION 12ULL
 struct o2net_handshake {
 	__be64	protocol_version;
 	__be64	connector_id;