Commit ee0b3843 authored by Arseniy Krasnov's avatar Arseniy Krasnov Committed by Paolo Abeni
Browse files

vsock: pass sock_rcvlowat to notify_poll_in as target 



Passing 1 as the target to notify_poll_in(), we don't honor
what the user has set via SO_RCVLOWAT, going to set POLLIN
and POLLRDNORM, even if we don't have the amount of bytes
expected by the user.

Let's use sock_rcvlowat() to get the right target to pass to
notify_poll_in();

Signed-off-by: default avatarArseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent a274f6ff

net/vmw_vsock/af_vsock.c

+2 −1
Original line number Diff line number Diff line
@@ -1066,8 +1066,9 @@ static __poll_t vsock_poll(struct file *file, struct socket *sock, 
		if (transport && transport->stream_is_active(vsk) &&

		    !(sk->sk_shutdown & RCV_SHUTDOWN)) {

			bool data_ready_now = false;

			int target = sock_rcvlowat(sk, 0, INT_MAX);

			int ret = transport->notify_poll_in(

					vsk, 1, &data_ready_now);

					vsk, target, &data_ready_now);

			if (ret < 0) {

				mask |= EPOLLERR;

			} else {