From: Miaohe Lin <linmia...@huawei.com>
Date: Mon, 24 Aug 2020 07:35:28 -0400
> When mtu is locked, we should not obtain ipv4 mtu as we return immediately
> in this case and leave acquired ipv4 mtu unused.
>
> Signed-off-by: Miaohe Lin <linmia...@huawei.com>
> ---
> net/ipv4/route.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/net/ipv4/route.c b/net/ipv4/route.c
> index 8ca6bcab7b03..f0a0faf58267 100644
> --- a/net/ipv4/route.c
> +++ b/net/ipv4/route.c
> @@ -1013,13 +1013,14 @@ out: kfree_skb(skb);
> static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32
> mtu)
> {
> struct dst_entry *dst = &rt->dst;
> - u32 old_mtu = ipv4_mtu(dst);
> + u32 old_mtu;
> struct fib_result res;
> bool lock = false;
Please preserve the reverse christmas tree ordering of local variables here.
