net: annotate writes on dev->mtu from ndo_change_mtu()

[linux-block.git] / net / ipv6 / ip6_vti.c

diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index 78344cf3867eac74cdaff5eda5d603ba68db3828..590737c275379851f7bbd8c44e08c2d75ce7c375 100644 (file)
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -666,7 +666,8 @@ static void vti6_link_config(struct ip6_tnl *t, bool keep_mtu)
                dev->flags &= ~IFF_POINTOPOINT;
 
        if (keep_mtu && dev->mtu) {
-               dev->mtu = clamp(dev->mtu, dev->min_mtu, dev->max_mtu);
+               WRITE_ONCE(dev->mtu,
+                          clamp(dev->mtu, dev->min_mtu, dev->max_mtu));
                return;
        }