* [PPATCH net-next-2.6] ipv4: inetdev_by_index() switch to RCU
@ 2009-11-02 5:23 Eric Dumazet
2009-11-02 7:56 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Eric Dumazet @ 2009-11-02 5:23 UTC (permalink / raw)
To: David S. Miller; +Cc: Linux Netdev List
Use dev_get_by_index_rcu() instead of __dev_get_by_index() and
dev_base_lock rwlock
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
---
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 5df2f6a..ccccaae 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -405,11 +405,12 @@ struct in_device *inetdev_by_index(struct net *net, int ifindex)
{
struct net_device *dev;
struct in_device *in_dev = NULL;
- read_lock(&dev_base_lock);
- dev = __dev_get_by_index(net, ifindex);
+
+ rcu_read_lock();
+ dev = dev_get_by_index_rcu(net, ifindex);
if (dev)
in_dev = in_dev_get(dev);
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
return in_dev;
}
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2009-11-02 5:23 [PPATCH net-next-2.6] ipv4: inetdev_by_index() switch to RCU Eric Dumazet
2009-11-02 7:56 ` David Miller
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