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    Subject[PATCH 5.17 315/343] net/smc: send directly on setting TCP_NODELAY
    Date
    From: Dust Li <dust.li@linux.alibaba.com>

    commit b70a5cc045197aad9c159042621baf3c015f6cc7 upstream.

    In commit ea785a1a573b("net/smc: Send directly when
    TCP_CORK is cleared"), we don't use delayed work
    to implement cork.

    This patch use the same algorithm, removes the
    delayed work when setting TCP_NODELAY and send
    directly in setsockopt(). This also makes the
    TCP_NODELAY the same as TCP.

    Cc: Tony Lu <tonylu@linux.alibaba.com>
    Signed-off-by: Dust Li <dust.li@linux.alibaba.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    net/smc/af_smc.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    --- a/net/smc/af_smc.c
    +++ b/net/smc/af_smc.c
    @@ -2625,8 +2625,8 @@ static int smc_setsockopt(struct socket
    sk->sk_state != SMC_CLOSED) {
    if (val) {
    SMC_STAT_INC(smc, ndly_cnt);
    - mod_delayed_work(smc->conn.lgr->tx_wq,
    - &smc->conn.tx_work, 0);
    + smc_tx_pending(&smc->conn);
    + cancel_delayed_work(&smc->conn.tx_work);
    }
    }
    break;

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