[TCP]: rcvbuf lock when tcp_moderate_rcvbuf enabled

The rcvbuf lock should probably be honored here.

Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index a97ed5416c28..e9a54ae7d690 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -456,7 +456,8 @@ void tcp_rcv_space_adjust(struct sock *sk)
 
                 tp->rcvq_space.space = space;
 
-                if (sysctl_tcp_moderate_rcvbuf) {
+                if (sysctl_tcp_moderate_rcvbuf &&
+                    !(sk->sk_userlocks & SOCK_RCVBUF_LOCK)) {
                         int new_clamp = space;
 
                         /* Receive space grows, normalize in order to