[TCP]: Add unlikely() to sacktag out-of-mem in fragment case

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 9fc9096ada8a13416e80e73ec36090e4e62119db..84bcdc94dfa980af9c97b7e637c751e5314ecf5c 100644 (file)
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1400,7 +1400,7 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_
                        /* DSACK info lost if out-of-mem, try SACK still */
                        if (in_sack <= 0)
                                in_sack = tcp_match_skb_to_sack(sk, skb, start_seq, end_seq);
-                       if (in_sack < 0)
+                       if (unlikely(in_sack < 0))
                                break;
 
                        sacked = TCP_SKB_CB(skb)->sacked;