ipv4: Kill dst_copy_metrics() call from ipv4_blackhole_route().

Blackhole routes have a COW metrics operation that returns NULL
always, therefore this dst_copy_metrics() call did absolutely
nothing.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 1678b57..a967df5 100644 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2668,7 +2668,6 @@ struct dst_entry *ipv4_blackhole_route(struct net *net, struct dst_entry *dst_or
                new->__use = 1;
                new->input = dst_discard;
                new->output = dst_discard;
-               dst_copy_metrics(new, &ort->dst);
 
                new->dev = ort->dst.dev;
                if (new->dev)