Virtualization - Aug 2022 - [RFC PATCH v3 3/9] virtio/vsock: use 'target' in notify_poll_in callback

On Wed, Aug 03, 2022 at 01:55:36PM +0000, Arseniy Krasnov
wrote:
>This callback controls setting of POLLIN,POLLRDNORM output bits of poll()
>syscall,but in some cases,it is incorrectly to set it, when socket has
>at least 1 bytes of available data. Use 'target' which is already
exists
>and equal to sk_rcvlowat in this case.
Little suggestion:
We should update the commit description, since so far 'target' is not 
equal to sk_rcvlowat.

With that fixed (and adding some spaces after the commas):

Reviewed-by: Stefano Garzarella <sgarzare at redhat.com>
>
>Signed-off-by: Arseniy Krasnov <AVKrasnov at sberdevices.ru>
>---
> net/vmw_vsock/virtio_transport_common.c | 5 +----
> 1 file changed, 1 insertion(+), 4 deletions(-)
>
>diff --git a/net/vmw_vsock/virtio_transport_common.c
b/net/vmw_vsock/virtio_transport_common.c
>index ec2c2afbf0d0..8f6356ebcdd1 100644
>--- a/net/vmw_vsock/virtio_transport_common.c
>+++ b/net/vmw_vsock/virtio_transport_common.c
>@@ -634,10 +634,7 @@ virtio_transport_notify_poll_in(struct vsock_sock *vsk,
> 				size_t target,
> 				bool *data_ready_now)
> {
>-	if (vsock_stream_has_data(vsk))
>-		*data_ready_now = true;
>-	else
>-		*data_ready_now = false;
>+	*data_ready_now = vsock_stream_has_data(vsk) >= target;
>
> 	return 0;
> }
>-- 
>2.25.1