Commit 0d79a493 authored Feb 25, 2015 by Michael S. Tsirkin Committed by David S. Miller Feb 27, 2015

vhost: drop hard-coded num_buffers size



The 2 that we use for copy_to_iter comes from sizeof(u16),
it used to be that way before the iov iter update.
Fix it up, making it obvious the size of stack access
is right.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 4c5a8442

drivers/vhost/net.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -621,7 +621,8 @@ static void handle_rx(struct vhost_net *net)

		num_buffers = cpu_to_vhost16(vq, headcount);
		if (likely(mergeable) &&
		copy_to_iter(&num_buffers, 2, &fixup) != 2) {
		copy_to_iter(&num_buffers, sizeof num_buffers,
		&fixup) != sizeof num_buffers) {
		vq_err(vq, "Failed num_buffers write");
		vhost_discard_vq_desc(vq, headcount);
		break;