ipv6: remove a rcu_read_lock in ndisc_constructor
in6_dev_get(dev) takes a reference on struct inet6_dev, we dont need
rcu locking in ndisc_constructor()
Signed-off-by: Roy.Li <rongqing.li@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 1f52dd2..7968bfe 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -370,17 +370,14 @@
struct neigh_parms *parms;
int is_multicast = ipv6_addr_is_multicast(addr);
- rcu_read_lock();
in6_dev = in6_dev_get(dev);
if (in6_dev == NULL) {
- rcu_read_unlock();
return -EINVAL;
}
parms = in6_dev->nd_parms;
__neigh_parms_put(neigh->parms);
neigh->parms = neigh_parms_clone(parms);
- rcu_read_unlock();
neigh->type = is_multicast ? RTN_MULTICAST : RTN_UNICAST;
if (!dev->header_ops) {