PNFS: set the default DS timeout to 60 seconds

The client should have 60 second default timeouts for DS operations, not 6
seconds.

NFS4_DEF_DS_TIMEO is used as "timeout in tenths of a second" in
nfs_init_timeout_values (and is not used anywhere else).
This matches up with the description of the module param dataserver_timeo.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4filelayout.h

@@ -36,7 +36,7 @@
  * Default data server connection timeout and retrans vaules.
  * Set by module paramters dataserver_timeo and dataserver_retrans.
  */
-#define NFS4_DEF_DS_TIMEO   60
+#define NFS4_DEF_DS_TIMEO   600 /* in tenths of a second */
 #define NFS4_DEF_DS_RETRANS 5
 
 /*