Some parts of the iovec API were replaced by the similar message API. Refactoring the code to use that.
diff -rupN vsock-only/linux/af_vsock.c vsock-only.new/linux/af_vsock.c
--- vsock-only/linux/af_vsock.c	2015-05-05 11:26:05.145081792 -0400
+++ vsock-only.new/linux/af_vsock.c	2015-05-05 11:30:54.304097466 -0400
@@ -4266,7 +4266,7 @@ VSockVmciDgramSendmsg(struct kiocb *kioc
       goto out;
    }
 
-   memcpy_fromiovec(VMCI_DG_PAYLOAD(dg), msg->msg_iov, len);
+   memcpy_from_msg(VMCI_DG_PAYLOAD(dg), msg, len);
 
    dg->dst = VMCI_MAKE_HANDLE(remoteAddr->svm_cid, remoteAddr->svm_port);
    dg->src = VMCI_MAKE_HANDLE(vsk->localAddr.svm_cid, vsk->localAddr.svm_port);