net: fib: Decrease one unnecessary rt cache flush in fib_disable_ip

The func fib_flush already flushes the rt cache if necessary, so it is not necessary to invoke rt_cache_flush again in fib_disable_ip. Signed-off-by: Gao Feng <[email protected]> Signed-off-by: David S. Miller <[email protected]>
opendata26 · Apr 27, 2017 · 06b4fc5 · 06b4fc5
1 parent 1514dc8
commit 06b4fc5
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
@@ -1130,7 +1130,8 @@ static void fib_disable_ip(struct net_device *dev, unsigned long event,
 {
 	if (fib_sync_down_dev(dev, event, force))
 		fib_flush(dev_net(dev));
-	rt_cache_flush(dev_net(dev));
+	else
+		rt_cache_flush(dev_net(dev));
 	arp_ifdown(dev);
 }