nfsd41: access_valid

For nfs41, the open share flags are used also for
delegation "wants" and "signals".  Check that they are valid.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

include/linux/nfsd/xdr4.h

@@ -53,6 +53,7 @@ struct nfsd4_compound_state {
 	struct nfsd4_slot	*slot;
 	__be32			*statp;
 	size_t			iovlen;
+	u32			minorversion;
 	u32			status;
 };