| Message ID | 1462204727-9224-2-git-send-email-jon.maloy@ericsson.com |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 3eeb50a..d37a940 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1748,7 +1748,7 @@ static void tipc_sk_enqueue(struct sk_buff_head *inputq, struct sock *sk, /* Try backlog, compensating for double-counted bytes */ dcnt = &tipc_sk(sk)->dupl_rcvcnt; - if (sk->sk_backlog.len) + if (!sk->sk_backlog.len) atomic_set(dcnt, 0); lim = rcvbuf_limit(sk, skb) + atomic_read(dcnt); if (likely(!sk_add_backlog(sk, skb, lim)))
In the refactoring commit d570d86497ee ("tipc: enqueue arrived buffers in socket in separate function") we did by accident replace the test if (sk->sk_backlog.len == 0) atomic_set(&tsk->dupl_rcvcnt, 0); with if (sk->sk_backlog.len) atomic_set(&tsk->dupl_rcvcnt, 0); This effectively disables the compensation we have for the double receive buffer accounting that occurs temporarily when buffers are moved from the backlog to the socket receive queue. Until now, this has gone unnoticed because of the large receive buffer limits we are applying, but becomes indispensable when we reduce this buffer limit later in this series. We now fix this by inverting the mentioned condition. Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> --- net/tipc/socket.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)