Received: by 10.213.65.68 with SMTP id h4csp1637747imn; Thu, 29 Mar 2018 08:15:50 -0700 (PDT) X-Google-Smtp-Source: AIpwx49/blQrx/a67Au4ng443kPMU/7e53KzzLOs07/PjDXcBX5Eh/w3DoWjaGNFNDQOVaoDP2b4 X-Received: by 2002:a17:902:780d:: with SMTP id p13-v6mr8770001pll.281.1522336550147; Thu, 29 Mar 2018 08:15:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1522336550; cv=none; d=google.com; s=arc-20160816; b=AWXNW1XpCc9rWIrOI+1Cyn6evsh4HAl4gMSXa4n0L35R4YKLMGKIMBuzXIh9LCPCof kg4ytayXRtmcmWBwpE+ay2HncwTYg1B9bgc4wxjguQVO0BeTZ6dy4koOZvAXhmg8LhNK 58vOecG1N3Jm6BNSY0BcBc7ywk4e7icBQjycOIiNrOJDsswDtEURvil7lGjjSewD9qhM fVQDMQxQXY1zXingfp34/re6J6YvQIjAMPLZhGvIXsopebeRW536KJdshBFngvX7U/G8 41hPzZAAEChHE1464oWn2ygtcfYkTphnwkAPGZ8czyTSQy/pkTm7RUc0EeyKhKfJEjpA YdGg== 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:arc-authentication-results; bh=zuYmUAMynIKi2uleXfTptUetcHkuis1Jm2/0rEKyHUk=; b=rTtKpv/pPSPSA5MjmixMa0wGla6BGrbLevU0YzXXHs6quvNK5TExcVhAnZD5LohJDs JQ88M3+rCuqXwifQa7AgSpoDMM3YBLCg7Yiaq6AFO/HwgYwjo21xOk0p+9WNuwte75nW gVBUbkPPDUxDUgssgO/bBjj52qWplwbz5KARVFvlCsTlKE+Akvw2yy9cPl8VzHCP3/ld JhcZKNEsRpGx/3HQry5lxZzHwBTkTlBv3NyV2nN6jpnfw+qFus+faEsTZED49M3qYlYs ghzmAI0DRaLvnqGYRixyQW+XPWj/9hItdiqOG2ZnbOSKfvVedQm4g4favK1KvuNe2d90 ef3A== 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 a15-v6si1783074pll.21.2018.03.29.08.15.35; Thu, 29 Mar 2018 08:15:50 -0700 (PDT) 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 S1751968AbeC2POI (ORCPT + 99 others); Thu, 29 Mar 2018 11:14:08 -0400 Received: from mx2.suse.de ([195.135.220.15]:59994 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751151AbeC2POH (ORCPT ); Thu, 29 Mar 2018 11:14:07 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 96C06AB3E; Thu, 29 Mar 2018 15:14:06 +0000 (UTC) Date: Thu, 29 Mar 2018 08:01:48 -0700 From: Davidlohr Bueso To: Waiman Long Cc: Ingo Molnar , Peter Zijlstra , Thomas Gleixner , linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 1/2] locking/rwsem: Add DEBUG_RWSEMS to look for lock/unlock mismatches Message-ID: <20180329150148.ydmsymzupgi5v7ql@linux-n805> References: <1522246852-17501-1-git-send-email-longman@redhat.com> <1522246852-17501-2-git-send-email-longman@redhat.com> <20180329013224.tfryvl6lv5i72jwm@linux-n805> <1b8d58b1-faf3-f210-7356-9d67930a2efb@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <1b8d58b1-faf3-f210-7356-9d67930a2efb@redhat.com> User-Agent: NeoMutt/20170421 (1.8.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 29 Mar 2018, Waiman Long wrote: >Because it checks the owner field which is present only if >RWSEM_SPIN_ON_OWNER is defined. Mutex is different in the sense that the >owner field is always there no matter if MUTEX_SPIN_ON_OWNER is set or not. Ah right; that's after Peter's mutex rewrite iirc. No objections from me. Acked-by: Davidlohr Bueso