net: annotate sk->sk_rcvlowat lockless reads

[linux-2.6-block.git] / net / ipv4 / tcp.c

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 888c92b63f5a6dc4b935cca7c979c1e559126d44..8781a92ea4b6e4ee9ceeb763dae01970e7f4438a 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1699,7 +1699,7 @@ int tcp_set_rcvlowat(struct sock *sk, int val)
        else
                cap = sock_net(sk)->ipv4.sysctl_tcp_rmem[2] >> 1;
        val = min(val, cap);
-       sk->sk_rcvlowat = val ? : 1;
+       WRITE_ONCE(sk->sk_rcvlowat, val ? : 1);
 
        /* Check if we need to signal EPOLLIN right now */
        tcp_data_ready(sk);