+ /* NFS 4.2 */
+ "allocate", /* 3.18 */
+ "copy", /* 3.18 */
+ "copy_notify", /* 3.18 */
+ "deallocate", /* 3.18 */
+ "ioadvise", /* 3.18 */
+ "layouterror", /* 3.18 */
+ "layoutstats", /* 3.18 */
+ "offloadcancel", /* 3.18 */
+ "offloadstatus", /* 3.18 */
+ "readplus", /* 3.18 */
+ "seek", /* 3.18 */
+ "write_same", /* 3.18 */
+ "clone" /* 4.5 */