1 files changed, 2 insertions, 9 deletions

diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 129ed8f74138..683902fcc8ed 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -161,17 +161,10 @@ static inline void dccp_do_pmtu_discovery(struct sock *sk,
         if (sk->sk_state == DCCP_LISTEN)
                 return;
 
-        /* We don't check in the destentry if pmtu discovery is forbidden
-         * on this route. We just assume that no packet_to_big packets
-         * are send back when pmtu discovery is not active.
-         * There is a small race when the user changes this flag in the
-         * route, but I think that's acceptable.
-         */
-        if ((dst = __sk_dst_check(sk, 0)) == NULL)
+        dst = inet_csk_update_pmtu(sk, mtu);
+        if (!dst)
                 return;
 
-        dst->ops->update_pmtu(dst, mtu);
-
         /* Something is about to be wrong... Remember soft error
          * for the case, if this connection will not able to recover.
          */