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ipv6: avoid zeroing per cpu data again 

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

Fixes: d52d3997f8 ("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>
This commit is contained in:
Eric Dumazet 2017-10-09 06:01:37 -07:00 committed by David S. Miller
parent 410a619adc
commit bfd8e5a407
1 changed files with 1 additions and 11 deletions
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12
net/ipv6/route.c
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@ -377,17 +377,7 @@ struct rt6_info *ip6_dst_alloc(struct net *net,
if (rt) { if (rt) {
rt->rt6i_pcpu = alloc_percpu_gfp(struct rt6_info *, GFP_ATOMIC); rt->rt6i_pcpu = alloc_percpu_gfp(struct rt6_info *, GFP_ATOMIC);
if (rt->rt6i_pcpu) { 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 {
dst_release_immediate(&rt->dst); dst_release_immediate(&rt->dst);
return NULL; return NULL;
} }