net: don't use INIT_RCU_HEAD

call_rcu() will unconditionally rewrite RCU head anyway.
Applies to 
	struct neigh_parms
	struct neigh_table
	struct net
	struct cipso_v4_doi
	struct in_ifaddr
	struct in_device
	rt->u.dst

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 2 deletions

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index f1d07b5c1e1..861b4cbf40d 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -47,7 +47,6 @@ static __net_init int setup_net(struct net *net)
                 goto out;
 
         ng->len = INITIAL_NET_GEN_PTRS;
-        INIT_RCU_HEAD(&ng->rcu);
         rcu_assign_pointer(net->gen, ng);
 
         error = 0;
@@ -446,7 +445,6 @@ int net_assign_generic(struct net *net, int id, void *data)
          */
 
         ng->len = id;
-        INIT_RCU_HEAD(&ng->rcu);
         memcpy(&ng->ptr, &old_ng->ptr, old_ng->len);
 
         rcu_assign_pointer(net->gen, ng);