From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29A98C433EF for ; Fri, 10 Dec 2021 19:20:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343577AbhLJTYB (ORCPT ); Fri, 10 Dec 2021 14:24:01 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]:4248 "EHLO frasgout.his.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242768AbhLJTYA (ORCPT ); Fri, 10 Dec 2021 14:24:00 -0500 Received: from fraeml704-chm.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4J9ggb1zQSz67MYc; Sat, 11 Dec 2021 03:19:07 +0800 (CST) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by fraeml704-chm.china.huawei.com (10.206.15.53) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.20; Fri, 10 Dec 2021 20:20:22 +0100 Received: from [10.47.93.58] (10.47.93.58) by lhreml724-chm.china.huawei.com (10.201.108.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Fri, 10 Dec 2021 19:20:22 +0000 Subject: Re: [PATCH v2 01/11] iommu/iova: Fix race between FQ timeout and teardown To: Robin Murphy , , CC: , , , , Xiongfeng Wang References: <03cbd9c4-0f11-895b-8eb5-1b75bb74d37c@huawei.com> <80145652-b9ca-57b5-ad95-ca12d6a25eea@arm.com> From: John Garry Message-ID: <8c29534f-ac90-6998-afd7-37b94a3ad3c2@huawei.com> Date: Fri, 10 Dec 2021 19:19:56 +0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: <80145652-b9ca-57b5-ad95-ca12d6a25eea@arm.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Originating-IP: [10.47.93.58] X-ClientProxiedBy: lhreml723-chm.china.huawei.com (10.201.108.74) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/12/2021 18:13, Robin Murphy wrote: >>> possible for the timeout to expire just*before*  the del_timer() call >> >> super nit: "just*before*  the" - needs a whitespace before "before" :) > > Weird... the original patch file here and the copy received by lore via > linux-iommu look fine, gremlins in your MUA or delivery path perhaps? Right, apologies for that. I did receive it ok, but my replying seemed to mangle it. Not sure why.. Thanks, John