hv_netvsc: use RCU to protect vf_netdev
The vf_netdev pointer in the netvsc device context can simply be protected
by RCU because network device destruction is already RCU synchronized.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 284b97b..6b79487 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -695,7 +695,7 @@
bool start_remove;
/* State to manage the associated VF interface. */
- struct net_device *vf_netdev;
+ struct net_device __rcu *vf_netdev;
bool vf_inject;
atomic_t vf_use_cnt;
/* 1: allocated, serial number is valid. 0: not allocated */