Subject: [PATCH] net: remove INIT_RCU_HEAD() usage

From: Alexey Dobriyan <[email-masked]>
Date: Fri, 12 Feb 2010 23:41:39 +0200

call_rcu() will unconditionally reinitialize RCU head anyway.

Signed-off-by: Alexey Dobriyan <[email-masked]>
---

 net/core/drop_monitor.c            |    1 -
 net/ipv6/sit.c                     |    1 -
 net/ipv6/xfrm6_tunnel.c            |    1 -
 net/netlabel/netlabel_domainhash.c |    1 -
 net/netlabel/netlabel_unlabeled.c  |    3 ---
 net/sctp/bind_addr.c               |    1 -
 net/sctp/ipv6.c                    |    1 -
 net/sctp/protocol.c                |    1 -
 8 files changed, 10 deletions(-)

--- a/net/core/drop_monitor.c
+++ b/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);
--- a/net/ipv6/sit.c
+++ b/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;
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -178,7 +178,6 @@ alloc_spi:
 	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);
--- a/net/netlabel/netlabel_domainhash.c
+++ b/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);
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/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) {
--- a/net/sctp/bind_addr.c
+++ b/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.
--- a/net/sctp/ipv6.c
+++ b/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);
 		}
 	}
--- a/net/sctp/protocol.c
+++ b/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);
 		}
 	}