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net: vhost: replace magic number of lock annotation

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Use the VHOST_NET_VQ_XXX as a subclass for mutex_lock_nested.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tonghao Zhang 2018-09-25 05:36:50 -07:00 committed by David S. Miller
parent 78139c94dc
commit a6a67a2f34
1 changed files with 3 additions and 3 deletions
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6
drivers/vhost/net.c
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@ -856,7 +856,7 @@ static void handle_tx(struct vhost_net *net)
struct vhost_virtqueue *vq = &nvq->vq;
struct socket *sock;
mutex_lock(&vq->mutex);
mutex_lock_nested(&vq->mutex, VHOST_NET_VQ_TX);
sock = vq->private_data;
if (!sock)
goto out;
@ -921,7 +921,7 @@ static int vhost_net_rx_peek_head_len(struct vhost_net *net, struct sock *sk,
/* Flush batched heads first */
vhost_net_signal_used(rnvq);
/* Both tx vq and rx socket were polled here */
mutex_lock_nested(&tvq->mutex, 1);
mutex_lock_nested(&tvq->mutex, VHOST_NET_VQ_TX);
vhost_disable_notify(&net->dev, tvq);
preempt_disable();
@ -1063,7 +1063,7 @@ static void handle_rx(struct vhost_net *net)
__virtio16 num_buffers;
int recv_pkts = 0;
mutex_lock_nested(&vq->mutex, 0);
mutex_lock_nested(&vq->mutex, VHOST_NET_VQ_RX);
sock = vq->private_data;
if (!sock)
goto out;