Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp1286785yba; Thu, 9 May 2019 13:59:17 -0700 (PDT) X-Google-Smtp-Source: APXvYqxOY4XUryWfN7YwlLDR/YqbMRwCTvZ/2rqGIyxw7vSinlEmXF0Ce6VGWdoziX6DhBjKycwZ X-Received: by 2002:a63:610f:: with SMTP id v15mr8738183pgb.128.1557435557101; Thu, 09 May 2019 13:59:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1557435557; cv=none; d=google.com; s=arc-20160816; b=Q7jUWBfNBAM8Tk+qof5TO00Yp8jv76M5hFgWf8ehgEayD7/yxuI2DhE4fFeiwi93J9 5aioaNAhdCWlHdXVNUuEKtjt7eNyk90JCAnmMF3ekRoeM07/XmczO/rWU6B5lIxTncqm whdqPoqPsI3eDcAVSgLX+ZDp1zzgOoj9uRdtjUKtn9GQqbcXTRHWjQhxSC1lfzpJgrWD HSc/poXE6uHIffdxnmoWDYbq0NEvPmxb9o2MEhHQIQdCn+XdfFS+XdyazYT6I9qskcND zUEpdiWyYzcMqrppsfFj2MvsexgEayqxThOtvheBd87gYhHapB1KqaRuEvmmN8Z7ydUX nieA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:from:subject:cc:to:message-id:date; bh=1M13vH8p3Wh4wU6uqY/jgsOirQhlZGtHiUThdr401mk=; b=IL1YVclRfuSBzkQDMdbL2xNnHTekNqT2VBbXgCTTeD3U2WSURA0uo8ZvL1DvwiKmxD tt2ZlI9NVxYSJ8GoH/+WBHgrz+ebqLngMR/cf1KLxPW1wq5wiqZ67W+ZPBwi022ec4F1 ghYTuChBPKn86lpq0aqkbuua/QgoDXBivAdhv9jnUje2Z5ZI4NWFYMQbOVkIcr7jiOm+ KvsZ2VKf6JeXtbQTzsYrNO2iHNxTbtsbjDgwznru+Yby4GLC4hZbvTffcjB0JY/l0kll k1ZDZAxiT2/I4TH3ZMFJm0RSvc7579LnbuQ/yf/kh66QwFJMkURu0kHDBuxH23JxFnw6 WZPA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id h3si4721927pls.408.2019.05.09.13.59.00; Thu, 09 May 2019 13:59:17 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726851AbfEIU6L (ORCPT + 99 others); Thu, 9 May 2019 16:58:11 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:40856 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726608AbfEIU6K (ORCPT ); Thu, 9 May 2019 16:58:10 -0400 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::3d8]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id ED81014DAEDD7; Thu, 9 May 2019 13:58:09 -0700 (PDT) Date: Thu, 09 May 2019 13:58:09 -0700 (PDT) Message-Id: <20190509.135809.630741953977432246.davem@davemloft.net> To: sunilmut@microsoft.com Cc: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, sashal@kernel.org, decui@microsoft.com, mikelley@microsoft.com, netdev@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] hv_sock: Fix data loss upon socket close From: David Miller In-Reply-To: References: X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Thu, 09 May 2019 13:58:10 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sunil Muthuswamy Date: Wed, 8 May 2019 23:10:35 +0000 > +static inline void hvs_shutdown_lock_held(struct hvsock *hvs, int mode) Please do not use the inline keyword in foo.c files, let the compiler decide. Also, longer term thing, I notice that vsock_remove_socket() is very inefficient locking-wise. It takes the table lock to do the placement test, and takes it again to do the removal. Might even be racy.