linux-kernel - [PATCH] vhost: fix interrupt mitigation with raw sockets

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Message-ID: <20100317144350.GB3984@redhat.com>
Date:	Wed, 17 Mar 2010 16:43:50 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>,
	Juan Quintela <quintela@...hat.com>,
	Unai Uribarri <unai.uribarri@...enet.com>, kvm@...r.kernel.org,
	virtualization@...ts.osdl.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] vhost: fix interrupt mitigation with raw sockets

A thinko in code means we never trigger interrupt
mitigation. Fix this.

Reported-by: Juan Quintela <quintela@...hat.com>
Reported-by: Unai Uribarri <unai.uribarri@...enet.com>
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 drivers/vhost/net.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index fcafb6b..a6a88df 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -125,7 +125,7 @@ static void handle_tx(struct vhost_net *net)
 	mutex_lock(&vq->mutex);
 	vhost_disable_notify(vq);
 
-	if (wmem < sock->sk->sk_sndbuf * 2)
+	if (wmem < sock->sk->sk_sndbuf / 2)
 		tx_poll_stop(net);
 	hdr_size = vq->hdr_size;
 
-- 
1.7.0.18.g0d53a5
--
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