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net: don't use INIT_RCU_HEAD

Browse source 
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 <[email protected]>
Acked-by: Paul E. McKenney <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Alexey Dobriyan 2008-10-28 13:25:09 -07:00 • committed by David S. Miller
commit 93adcc80f3
5 changed files with 1 additions and 14 deletions
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1
net/ipv4/cipso_ipv4.c
View file

@ -490,7 +490,6 @@ int cipso_v4_doi_add(struct cipso_v4_doi *doi_def)
}
atomic_set(&doi_def->refcount, 1);
INIT_RCU_HEAD(&doi_def->rcu);
spin_lock(&cipso_v4_doi_list_lock);
if (cipso_v4_doi_search(doi_def->doi) != NULL)

9
net/ipv4/devinet.c
View file

@ -112,13 +112,7 @@ static inline void devinet_sysctl_unregister(struct in_device *idev)
static struct in_ifaddr *inet_alloc_ifa(void)
{
struct in_ifaddr *ifa = kzalloc(sizeof(*ifa), GFP_KERNEL);
if (ifa) {
INIT_RCU_HEAD(&ifa->rcu_head);
}
return ifa;
return kzalloc(sizeof(struct in_ifaddr), GFP_KERNEL);
}
static void inet_rcu_free_ifa(struct rcu_head *head)
@ -161,7 +155,6 @@ static struct in_device *inetdev_init(struct net_device *dev)
in_dev = kzalloc(sizeof(*in_dev), GFP_KERNEL);
if (!in_dev)
goto out;
INIT_RCU_HEAD(&in_dev->rcu_head);
memcpy(&in_dev->cnf, dev_net(dev)->ipv4.devconf_dflt,
sizeof(in_dev->cnf));
in_dev->cnf.sysctl = NULL;

1
net/ipv4/route.c
View file

@ -1386,7 +1386,6 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
/* Copy all the information. */
*rt = *rth;
INIT_RCU_HEAD(&rt->u.dst.rcu_head);
rt->u.dst.__use = 1;
atomic_set(&rt->u.dst.__refcnt, 1);
rt->u.dst.child = NULL;