Received: by 2002:a05:6a10:6744:0:0:0:0 with SMTP id w4csp4803744pxu; Tue, 13 Oct 2020 07:33:03 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzhuynzlGGMoo6LCYn9j9DkxlE0tndYDoMLiotJA8BMrpdZT4cQ+J+ZGv8/5qlIlGftb5+R X-Received: by 2002:a50:8106:: with SMTP id 6mr20142592edc.264.1602599583045; Tue, 13 Oct 2020 07:33:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1602599583; cv=none; d=google.com; s=arc-20160816; b=0wxih13zNrAUblhniRE8rtP5gIUpKjbT5xiqO5JTWWGzmC74PKqLELhfSYoVcwBJdx kHtGIGE8WqkDOayVDQJUQpVxKv2cEK79K914o+xL0vvU6tXa/x3ShXZw+14AUYX6Kdwn jIxqBDLTvX4PmMcj+tsYkGxmHeEbIL2Jq+07AsQ79BZWzTPPAd4XPNOT78rHAvm2jC3S HFrr8ZQQQzyxmGsfjKFL7L56igMVTcPYb22BInq+J/VFf/z71tTqe+DjtukTzmZJzHrd 7ANNS5/TjyVNZN50pgWhIH2Q6fhJujzwguocwKSQeEWbQmUzgh9za0hEBQGLZkhzqiIS Dc0Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :in-reply-to:mime-version:user-agent:date:message-id:from:references :cc:to:subject:dkim-signature; bh=ZI0Kdum38xI6uGs3y2Dg7AaEs3YQjEOBKT9911THbyU=; b=Jv/ttoz1yTVdR0W0y2QLoCCcP2hi3sI3r6qAbIoZjPaKRKi2/ak0DZ/Gy4AKy7WMSO nXm/MRsBfrtLUtHAIeXS8R/50bvsCewEvE6OVHyYAOsXDtiIu7/Z2UXuHXZT789yhDHC 8d1xdvfODbzBZ8UYXypsZOm28bRWUIDXS7b1AKPRC/TbT9wRTbpugRG93jmxvVOJEIM6 ORfWAN68AVe+EKXwCZG5GjVtLnO3KZPQvn14xXumMAMW1QKVzsnCUxwkZXtvfEY6yU3/ 5P/Ac5u/hSr4MfYQ8Pw9Zz0DjfzCtY9lXMM94tTX32K8WpeW/101zSeCjx099p80Qu77 pO5Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=D+Wm1k2e; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id bo4si9532848edb.324.2020.10.13.07.32.30; Tue, 13 Oct 2020 07:33:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=D+Wm1k2e; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730505AbgJLVnZ (ORCPT + 99 others); Mon, 12 Oct 2020 17:43:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49828 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730399AbgJLVnY (ORCPT ); Mon, 12 Oct 2020 17:43:24 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 897ADC0613D0; Mon, 12 Oct 2020 14:43:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To:Subject:Sender :Reply-To:Content-ID:Content-Description; bh=ZI0Kdum38xI6uGs3y2Dg7AaEs3YQjEOBKT9911THbyU=; b=D+Wm1k2eypHkVHYf7ZCEzBtaqm GBe8TbPGD+fLHBo2kifrmhmXBlqmo+XaNDTSR0RhSUeyKhbUzZovIa7dQuGqkXxHAIznesk/nJX6X qVVs5FPRycE/B2MJUbFXS0au51AgoyHMY/iwsdEcplb7zvpPjK67EGfQPo9ca/eqvh2zOiXRxWrDk E3JODh21n5PqqQ/iDQCRUlcR9tekx0M8QHoSLKAkPOQVBVDHH30/8p+JzHkpwmrene0Do2Bo+x7Wr Mi87DAyK0BCuCLUCNXObEqAJt0gt7jOM4xInSu/R3Av9iX8CGyL6KPrjuruxkNIrpishX0+1EHtzm 2xzO4MMg==; Received: from [2601:1c0:6280:3f0::507c] by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kS5bD-0007m8-3m; Mon, 12 Oct 2020 21:43:19 +0000 Subject: Re: Regression: epoll edge-triggered (EPOLLET) for pipes/FIFOs To: Linus Torvalds , "Michael Kerrisk (man-pages)" Cc: Alexander Viro , David Howells , Rasmus Villemoes , Greg Kroah-Hartman , Peter Zijlstra , Nicolas Dichtel , Ian Kent , Christian Brauner , keyrings@vger.kernel.org, "linux-fsdevel@vger.kernel.org" , Linux API , lkml , Davide Libenzi References: <81229415-fb97-51f7-332c-d5e468bcbf2a@gmail.com> From: Randy Dunlap Message-ID: <22d3e535-564e-ebb9-991b-b328f9f806ed@infradead.org> Date: Mon, 12 Oct 2020 14:43:13 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/12/20 1:52 PM, Linus Torvalds wrote: > On Mon, Oct 12, 2020 at 1:30 PM Michael Kerrisk (man-pages) > > I'm busy merging, mind testing this odd patch out? It is _entirely_ > untested, but from the symptoms I think it's the obvious fix. > > I did the same thing for the "reader starting out from a full pipe" case too. > > Linus > and if that patch tests good, then fix this typo, please: + * Epoll nonsensically wants a wakeup wheher the pipe was whether thanks. -- ~Randy