[TCP]: Fix sysctl_tcp_low_latency
When enabled, this should disable UCOPY prequeue'ing altogether, but it does not due to a missing test. Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1326,7 +1326,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
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cleanup_rbuf(sk, copied);
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if (tp->ucopy.task == user_recv) {
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if (!sysctl_tcp_low_latency && tp->ucopy.task == user_recv) {
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/* Install new reader */
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if (!user_recv && !(flags & (MSG_TRUNC | MSG_PEEK))) {
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user_recv = current;
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