ipv6: avoid zeroing per cpu data again

per cpu allocations are already zeroed, no need to clear them again.

Fixes: d52d3997f843f ("ipv6: Create percpu rt6_info")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 606e80325b21c0e10a02e9c7d5b3fcfbfc26a003..3d7d4e09301ef4deae1985412599c6f4e973c46f 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -377,17 +377,7 @@ struct rt6_info *ip6_dst_alloc(struct net *net,
 
        if (rt) {
                rt->rt6i_pcpu = alloc_percpu_gfp(struct rt6_info *, GFP_ATOMIC);
-               if (rt->rt6i_pcpu) {
-                       int cpu;
-
-                       for_each_possible_cpu(cpu) {
-                               struct rt6_info **p;
-
-                               p = per_cpu_ptr(rt->rt6i_pcpu, cpu);
-                               /* no one shares rt */
-                               *p =  NULL;
-                       }
-               } else {
+               if (!rt->rt6i_pcpu) {
                        dst_release_immediate(&rt->dst);
                        return NULL;
                }