net: remove INIT_RCU_HEAD() usage

call_rcu() will unconditionally reinitialize RCU head anyway.
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>

net/core/drop_monitor.c

@@ -296,7 +296,6 @@ static int dropmon_net_event(struct notifier_block *ev_block,
 
 		new_stat->dev = dev;
 		new_stat->last_rx = jiffies;
-		INIT_RCU_HEAD(&new_stat->rcu);
 		spin_lock(&trace_state_lock);
 		list_add_rcu(&new_stat->list, &hw_stats_list);
 		spin_unlock(&trace_state_lock);

net/ipv6/sit.c

@@ -363,7 +363,6 @@ ipip6_tunnel_add_prl(struct ip_tunnel *t, struct ip_tunnel_prl *a, int chg)
 		goto out;
 	}
 
-	INIT_RCU_HEAD(&p->rcu_head);
 	p->next = t->prl;
 	p->addr = a->addr;
 	p->flags = a->flags;

net/ipv6/xfrm6_tunnel.c

@@ -161,7 +161,6 @@ static u32 __xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr)
 	if (!x6spi)
 		goto out;
 
-	INIT_RCU_HEAD(&x6spi->rcu_head);
 	memcpy(&x6spi->addr, saddr, sizeof(x6spi->addr));
 	x6spi->spi = spi;
 	atomic_set(&x6spi->refcnt, 1);

net/netlabel/netlabel_domainhash.c

@@ -315,7 +315,6 @@ int netlbl_domhsh_add(struct netlbl_dom_map *entry,
 		entry_old = netlbl_domhsh_search_def(entry->domain);
 	if (entry_old == NULL) {
 		entry->valid = 1;
-		INIT_RCU_HEAD(&entry->rcu);
 
 		if (entry->domain != NULL) {
 			u32 bkt = netlbl_domhsh_hash(entry->domain);

net/netlabel/netlabel_unlabeled.c

@@ -327,7 +327,6 @@ static int netlbl_unlhsh_add_addr4(struct netlbl_unlhsh_iface *iface,
 	entry->list.addr = addr->s_addr & mask->s_addr;
 	entry->list.mask = mask->s_addr;
 	entry->list.valid = 1;
-	INIT_RCU_HEAD(&entry->rcu);
 	entry->secid = secid;
 
 	spin_lock(&netlbl_unlhsh_lock);
@@ -373,7 +372,6 @@ static int netlbl_unlhsh_add_addr6(struct netlbl_unlhsh_iface *iface,
 	entry->list.addr.s6_addr32[3] &= mask->s6_addr32[3];
 	ipv6_addr_copy(&entry->list.mask, mask);
 	entry->list.valid = 1;
-	INIT_RCU_HEAD(&entry->rcu);
 	entry->secid = secid;
 
 	spin_lock(&netlbl_unlhsh_lock);
@@ -410,7 +408,6 @@ static struct netlbl_unlhsh_iface *netlbl_unlhsh_add_iface(int ifindex)
 	INIT_LIST_HEAD(&iface->addr4_list);
 	INIT_LIST_HEAD(&iface->addr6_list);
 	iface->valid = 1;
-	INIT_RCU_HEAD(&iface->rcu);
 
 	spin_lock(&netlbl_unlhsh_lock);
 	if (ifindex > 0) {

net/sctp/bind_addr.c

@@ -186,7 +186,6 @@ int sctp_add_bind_addr(struct sctp_bind_addr *bp, union sctp_addr *new,
 	addr->valid = 1;
 
 	INIT_LIST_HEAD(&addr->list);
-	INIT_RCU_HEAD(&addr->rcu);
 
 	/* We always hold a socket lock when calling this function,
 	 * and that acts as a writer synchronizing lock.

net/sctp/ipv6.c

@@ -381,7 +381,6 @@ static void sctp_v6_copy_addrlist(struct list_head *addrlist,
 			addr->a.v6.sin6_scope_id = dev->ifindex;
 			addr->valid = 1;
 			INIT_LIST_HEAD(&addr->list);
-			INIT_RCU_HEAD(&addr->rcu);
 			list_add_tail(&addr->list, addrlist);
 		}
 	}

net/sctp/protocol.c

@@ -188,7 +188,6 @@ static void sctp_v4_copy_addrlist(struct list_head *addrlist,
 			addr->a.v4.sin_addr.s_addr = ifa->ifa_local;
 			addr->valid = 1;
 			INIT_LIST_HEAD(&addr->list);
-			INIT_RCU_HEAD(&addr->rcu);
 			list_add_tail(&addr->list, addrlist);
 		}
 	}