Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp1245539ybl; Fri, 6 Dec 2019 13:54:47 -0800 (PST) X-Google-Smtp-Source: APXvYqywe/K2AVPHDU/EPz93ms7Qq8G43kLZbJf5A6YzDT/bBts7f/ZAO4fd0D3Jw5Yp03CtbvJt X-Received: by 2002:a05:6808:3bc:: with SMTP id n28mr13830569oie.112.1575669287676; Fri, 06 Dec 2019 13:54:47 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1575669287; cv=none; d=google.com; s=arc-20160816; b=pFXIhwwiNWG6myQLWtTYjWY+MGBWYU5g913HrnXyGi4zOkSW+uedqyIgK8fn9u9yTN fZFyZ0ygumvh23eJKFfHD2TbQHw/1J8lZU8qZOIo3l9Bv6MPYTrMZEKU1eZfy054DWKb Wv3GDf73UYbn/l3a6qS0S+62CvCUc/cgHtysH1IZ5LBFm3oVsw1LTtCbb0/50jnWCxZM zK4/GFzId7JuqHbZbHEdbQ+Dya3WO5l9chqq6GhjF0V8yeFx5qXhfGPkpn4cJA0SNg9I fkfZE9601oCOQpFm3SkQaysyzlo7iKt2HBoxWCbln3UsT3JKXwzY5EJhK0GSg7Kv9Xpo 9iWw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=wmwjzVTVUKdc+t1ZoscgaclmdBnFn4uDnK3cYE0zzFA=; b=imfQePIFwuQG5wulkU/Phw5pEw6K3KmYS8as8eswV+BiZuXNmFFj/rrdhKlgSqvoQD 9r+TGTyWEKb1OZekYY7Akc4shYmIMn7a/aUoWnZMEfY70Ph3o7IkrV3iP6glR+AxXyID yOEMbz1dyfLxD0NMh+HPOSUBP/tvaNr02K0oCtv/hhMp/P+zQ+J+8ajqwOKk3HBezLRs jLuyENuVf9b6sWjPY7c8VM5HZJMeIXhOLXecEWvSurQer36A9PyFPLzaLGpq13lqpedN YY2CD6gwdTULZ28drd8I/87SHCM1a2ff/bL3wuBKbKJls9dJLQhWc4jIDCTMLO1Odjbb hASA== 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 c2si8252806otn.311.2019.12.06.13.54.24; Fri, 06 Dec 2019 13:54:47 -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 S1726415AbfLFVx3 (ORCPT + 99 others); Fri, 6 Dec 2019 16:53:29 -0500 Received: from freki.datenkhaos.de ([81.7.17.101]:59500 "EHLO freki.datenkhaos.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726353AbfLFVx3 (ORCPT ); Fri, 6 Dec 2019 16:53:29 -0500 X-Greylist: delayed 350 seconds by postgrey-1.27 at vger.kernel.org; Fri, 06 Dec 2019 16:53:27 EST Received: from localhost (localhost [127.0.0.1]) by freki.datenkhaos.de (Postfix) with ESMTP id 0EEA01E3A722; Fri, 6 Dec 2019 22:47:36 +0100 (CET) Received: from freki.datenkhaos.de ([127.0.0.1]) by localhost (freki.datenkhaos.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3vv8b2g8ZfmA; Fri, 6 Dec 2019 22:47:30 +0100 (CET) Received: from latitude (x4db74696.dyn.telefonica.de [77.183.70.150]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by freki.datenkhaos.de (Postfix) with ESMTPSA; Fri, 6 Dec 2019 22:47:30 +0100 (CET) Date: Fri, 6 Dec 2019 22:47:25 +0100 From: Johannes Hirte To: David Howells Cc: torvalds@linux-foundation.org, Rasmus Villemoes , Greg Kroah-Hartman , Peter Zijlstra , nicolas.dichtel@6wind.com, raven@themaw.net, Christian Brauner , keyrings@vger.kernel.org, linux-usb@vger.kernel.org, linux-block@vger.kernel.org, linux-security-module@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 04/10] pipe: Use head and tail pointers for the ring, not cursor and length [ver #2] Message-ID: <20191206214725.GA2108@latitude> References: <157186182463.3995.13922458878706311997.stgit@warthog.procyon.org.uk> <157186186167.3995.7568100174393739543.stgit@warthog.procyon.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <157186186167.3995.7568100174393739543.stgit@warthog.procyon.org.uk> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2019 Okt 23, David Howells wrote: > Convert pipes to use head and tail pointers for the buffer ring rather than > pointer and length as the latter requires two atomic ops to update (or a > combined op) whereas the former only requires one. This change breaks firefox on my system. I've noticed that some pages doesn't load correctly anymore (e.g. facebook, spiegel.de). The pages start loading and than stop. Looks like firefox is waiting for some dynamic loading content. I've bisected to this commit, but can't revert because of conflicts. -- Regards, Johannes Hirte