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 X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2C1EC43381 for ; Fri, 15 Feb 2019 09:54:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C9A5921924 for ; Fri, 15 Feb 2019 09:54:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732762AbfBOJyl (ORCPT ); Fri, 15 Feb 2019 04:54:41 -0500 Received: from Galois.linutronix.de ([146.0.238.70]:52205 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730379AbfBOJyk (ORCPT ); Fri, 15 Feb 2019 04:54:40 -0500 Received: from p5492e0d8.dip0.t-ipconnect.de ([84.146.224.216] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1guaCW-0007ye-O6; Fri, 15 Feb 2019 10:54:32 +0100 Date: Fri, 15 Feb 2019 10:54:32 +0100 (CET) From: Thomas Gleixner To: Marc Zyngier cc: LKML , Ming Lei , Christoph Hellwig , Bjorn Helgaas , Jens Axboe , linux-block@vger.kernel.org, Sagi Grimberg , linux-nvme@lists.infradead.org, linux-pci@vger.kernel.org, Keith Busch , Sumit Saxena , Kashyap Desai , Shivasharan Srikanteshwara Subject: Re: [patch V5 4/8] nvme-pci: Simplify interrupt allocation In-Reply-To: Message-ID: References: <20190214204755.819014197@linutronix.de> <20190214211759.699390983@linutronix.de> <868syhs8tn.wl-marc.zyngier@arm.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Fri, 15 Feb 2019, Thomas Gleixner wrote: > On Fri, 15 Feb 2019, Marc Zyngier wrote: > > > + */ > > > + if (nrirqs == 1) > > > + nr_read_queues = 0; > > > + else if (write_queues >= nrirqs) > > > + nr_read_queues = nrirqs - 1; > > > > ... while this seem to ensure that we carve out one write queue out of > > the irq set. It looks like a departure from the original code, which > > would set nr_read_queues to 1 in that particular case. > > Bah. right you are. That needs to be: nr_read_queues = 1; obviously. /me blushes.