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[IPV6] ADDRCONF: Convert addrconf_lock to RCU.

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Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
YOSHIFUJI Hideaki
2006-09-22 14:44:24 -07:00
committed by David S. Miller
parent fbea49e1e2
commit 8814c4b533
7 changed files with 36 additions and 36 deletions
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include/net/addrconf.h
+4 -6
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@@ -133,20 +133,18 @@ extern int unregister_inet6addr_notifier(struct notifier_block *nb);
static inline struct inet6_dev *
__in6_dev_get(struct net_device *dev)
{
return (struct inet6_dev *)dev->ip6_ptr;
return rcu_dereference(dev->ip6_ptr);
}
extern rwlock_t addrconf_lock;
static inline struct inet6_dev *
in6_dev_get(struct net_device *dev)
{
struct inet6_dev *idev = NULL;
read_lock(&addrconf_lock);
idev = dev->ip6_ptr;
rcu_read_lock();
idev = __in6_dev_get(dev);
if (idev)
atomic_inc(&idev->refcnt);
read_unlock(&addrconf_lock);
rcu_read_unlock();
return idev;
}