nfsd: add __force to opaque verifier field casts

sparse complains that we're stuffing non-byte-swapped values into
__be32's here. Since they're supposed to be opaque, it doesn't matter
much. Just add __force to make sparse happy.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfs4proc.c

@@ -581,8 +581,12 @@ static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
 	__be32 verf[2];
 	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
 
-	verf[0] = (__be32)nn->nfssvc_boot.tv_sec;
-	verf[1] = (__be32)nn->nfssvc_boot.tv_usec;
+	/*
+	 * This is opaque to client, so no need to byte-swap. Use
+	 * __force to keep sparse happy
+	 */
+	verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec;
+	verf[1] = (__force __be32)nn->nfssvc_boot.tv_usec;
 	memcpy(verifier->data, verf, sizeof(verifier->data));
 }
 

fs/nfsd/nfs4state.c

@@ -1421,8 +1421,12 @@ static void gen_confirm(struct nfs4_client *clp)
 	__be32 verf[2];
 	static u32 i;
 
-	verf[0] = (__be32)get_seconds();
-	verf[1] = (__be32)i++;
+	/*
+	 * This is opaque to client, so no need to byte-swap. Use
+	 * __force to keep sparse happy
+	 */
+	verf[0] = (__force __be32)get_seconds();
+	verf[1] = (__force __be32)i++;
 	memcpy(clp->cl_confirm.data, verf, sizeof(clp->cl_confirm.data));
 }