From patchwork Tue Feb 20 07:01:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "D. Wythe" X-Patchwork-Id: 13563478 Received: from out30-113.freemail.mail.aliyun.com (out30-113.freemail.mail.aliyun.com [115.124.30.113]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 55E8453812; Tue, 20 Feb 2024 07:01:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.113 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708412519; cv=none; b=Dk7vV26zcxyezhxNQ7VMWNiOr6nJPtrlTAAyRNhqnzEcEtYF4jMhUMJp+e3CbOhExziQ64/Sgz3ZoQyEei8LhgFPBuXG0/ebs+39ffUIqmn8ecNRFii1Iu06vW7C0aWgsTkXVwwK6aJS0geb7O4IEuK8U6HZsggkM3kZzLEHyLs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708412519; c=relaxed/simple; bh=Iutsv3OoVwGF4kc4XgVKcahxUlu7ij77pKg7OhMyixw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=mJCMyZE5uT8R7CFzHqoQ0c20FawL+I4jyJCugqS2uHwB8T7cB8o2nWDeWqu63033n9uQP15y4O8lnqyezRu8Vp6by5NPSoFehKbWcgGTpqKe18tPVQSURUxdGjFj18Afdilo+NTR4/iD9R4ez3zfwvrS+66I0zwUHWhCMXYroLc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=eOw8bREG; arc=none smtp.client-ip=115.124.30.113 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="eOw8bREG" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1708412512; h=From:To:Subject:Date:Message-Id; bh=BQy1WZZL5aLxU1nT2lhQS39zApqAqUDXC+HaX/JlrPE=; b=eOw8bREG6y/bSpF+0i5Na6jzB88tPN5hbxYdOPAnsRMEdGaB/kJB7rMp+myM5gFiqQsi6/CNVWhngt89FGoTd6QxRdf57oGoOJQ+GaRq2DMJ3ZoPEoMU0bBiLdfFYWxppkr7JfqwWG470dKNkTy1ByxTnkg+tdLmN4tIR3qPhDw= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R111e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045170;MF=alibuda@linux.alibaba.com;NM=1;PH=DS;RN=13;SR=0;TI=SMTPD_---0W0vuXdx_1708412511; Received: from j66a10360.sqa.eu95.tbsite.net(mailfrom:alibuda@linux.alibaba.com fp:SMTPD_---0W0vuXdx_1708412511) by smtp.aliyun-inc.com; Tue, 20 Feb 2024 15:01:52 +0800 From: "D. Wythe" To: kgraul@linux.ibm.com, wenjia@linux.ibm.com, jaka@linux.ibm.com, wintera@linux.ibm.com, guwen@linux.alibaba.com Cc: kuba@kernel.org, davem@davemloft.net, netdev@vger.kernel.org, linux-s390@vger.kernel.org, linux-rdma@vger.kernel.org, tonylu@linux.alibaba.com, pabeni@redhat.com, edumazet@google.com Subject: [RFC net-next 04/20] net/smc: refactor smc_accept_poll Date: Tue, 20 Feb 2024 15:01:29 +0800 Message-Id: <1708412505-34470-5-git-send-email-alibuda@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1708412505-34470-1-git-send-email-alibuda@linux.alibaba.com> References: <1708412505-34470-1-git-send-email-alibuda@linux.alibaba.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: "D. Wythe" Refactoring smc_accept_poll to extract a common function for determining whether the accept_queue is empty. Signed-off-by: D. Wythe --- net/smc/af_smc.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index e87af68..7966d06 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -2832,17 +2832,16 @@ static int smc_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, return rc; } -static __poll_t smc_accept_poll(struct sock *parent) +static inline bool smc_accept_queue_empty(struct sock *sk) { - struct smc_sock *isk = smc_sk(parent); - __poll_t mask = 0; - - spin_lock(&isk->accept_q_lock); - if (!list_empty(&isk->accept_q)) - mask = EPOLLIN | EPOLLRDNORM; - spin_unlock(&isk->accept_q_lock); + return list_empty(&smc_sk(sk)->accept_q); +} - return mask; +static __poll_t smc_accept_poll(struct sock *parent) +{ + if (!smc_accept_queue_empty(parent)) + return EPOLLIN | EPOLLRDNORM; + return 0; } static __poll_t smc_poll(struct file *file, struct socket *sock,