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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2006-09-23 01:44:24 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-23 02:20:26 +0400
commit8814c4b533817df825485ff32ce6ac406c3a54d1 (patch)
treeb72cc3513e7dc4b60e98c7ddebe76bca188f88fc /include/net/addrconf.h
parentfbea49e1e2404baa2d88ab47e2db89e49551b53b (diff)
downloadlinux-8814c4b533817df825485ff32ce6ac406c3a54d1.tar.xz
[IPV6] ADDRCONF: Convert addrconf_lock to RCU.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/addrconf.h')
-rw-r--r--include/net/addrconf.h10
1 files changed, 4 insertions, 6 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 5fc8627435eb..aa2ed8f0a9dd 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -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;
}