Received: by 2002:ac0:aed5:0:0:0:0:0 with SMTP id t21csp2891439imb; Mon, 4 Mar 2019 17:27:23 -0800 (PST) X-Google-Smtp-Source: AHgI3IZc+VEQdzF8ArSaiaAdJcGNGWsQCLxdnDZvaOYwpjqmVfWdJS6YS526u4BM7cax9shxyoWG X-Received: by 2002:aa7:8d53:: with SMTP id s19mr23477790pfe.16.1551749243473; Mon, 04 Mar 2019 17:27:23 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1551749243; cv=none; d=google.com; s=arc-20160816; b=UlFHsBnPQZdc+qdadu+nflo9NvRl1MCtIinh0yvsudIaCv62H/XNp/Byn1HZmf8s9w u2YwyvvNI0uupLHTFj1u7niuCbZsK/nTZnUPXFGvsRL8w7QWc9vSDRVsxq94UaKTPRtw NZpGfmL9y8BD78GPUqbdYeMYff5l+kbHmvIxECfiYEHaO0QFvRSH1KwDitc1gSXCp2e7 ANCe8jw5BDls/CHQvHG+gEPgtqO+r6ZcrPEwLLrOjGbQyLSpTTX17FlwTCE1I9F73wIB XO9K3tPcNUIlfb4xBXqbwa95ahtVbmSY1WAk/Q3PDNcVn3taQ8Krb4SRndYIjiO5EfEl Cqfg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=4XEZWQ40kfnlFUcceppP+8YyfGxnNI+jkajPVK2NlxY=; b=FW+Enl8dDQDwIaiAPlmLqdgG2JiUKH/+AXqZJSxpSZdI4BvuyysGAx5JII76tf+uqN qhF1dPwW4w9hbJrfW0mD5cpLPg1GEiqaoPwyVBz1P4bqTi+7Lpr8Ym9rpyxlPqpqt1qK qogBeM50Nt8Lo/fXWNW+rHG0dTqErgMgkC1kqBvtoNts9DifV8keKeT46csqGwVRZGee Zu6SQhq3A0+M1Q6xgkqClj0jMM5lAuOcU0imvTS1ktscfd9yGwxmgA9cXEf40faGeboX W5QQQgxhpBu6vOpGa2tJyPfNGu5JFU1BTSCnRrcvvpVR2xeUvLl6hEvr/DIkVXCmeFRP BZPg== 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 o17si6743507pll.344.2019.03.04.17.27.07; Mon, 04 Mar 2019 17:27:23 -0800 (PST) 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 S1726882AbfCEBZY (ORCPT + 99 others); Mon, 4 Mar 2019 20:25:24 -0500 Received: from zeniv.linux.org.uk ([195.92.253.2]:33358 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726066AbfCEBZY (ORCPT ); Mon, 4 Mar 2019 20:25:24 -0500 Received: from viro by ZenIV.linux.org.uk with local (Exim 4.92 #3 (Red Hat Linux)) id 1h0ype-00062h-01; Tue, 05 Mar 2019 01:25:22 +0000 Date: Tue, 5 Mar 2019 01:25:21 +0000 From: Al Viro To: Hou Tao Cc: linux-fsdevel@vger.kernel.org, linux-aio@kvack.org, Christoph Hellwig , Benjamin LaHaise , LKML Subject: Re: [PATCH] aio: take an extra file reference before call vfs_poll() Message-ID: <20190305012521.GU2217@ZenIV.linux.org.uk> References: <20190225090332.88640-1-houtao1@huawei.com> <978dc206-d28e-fb5d-e857-8d16e160a87c@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <978dc206-d28e-fb5d-e857-8d16e160a87c@huawei.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 05, 2019 at 09:17:07AM +0800, Hou Tao wrote: > ping ? Oh, hell... I really wish I'd seen your mail back then ;-/ Would've avoided a lot of headache now (and essentially duplicating your analysis + patch when a later report got noticed - right before the -final, Murphy Law being what it is). Unfortunately, that approach (and I'd ended up with pretty much the same patch) doesn't solve all problems in the area; I think I have a sane fix, will post tomorrow morning... Again, my apologies. I probably need to do what Linus had done years ago and unsubscribe from l-k - the traffic is too high and stuff gets lost in the noise ;-/