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=-5.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, FROM_EXCESS_BASE64,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 307B7C32750 for ; Tue, 13 Aug 2019 08:20:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0651C206C1 for ; Tue, 13 Aug 2019 08:20:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="Y13i+U+x" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727166AbfHMIU3 (ORCPT ); Tue, 13 Aug 2019 04:20:29 -0400 Received: from esa5.hc3370-68.iphmx.com ([216.71.155.168]:9755 "EHLO esa5.hc3370-68.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727029AbfHMIU2 (ORCPT ); Tue, 13 Aug 2019 04:20:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1565684428; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=MSNDb5M/uhPTXoW2QG6d7ZGLQTVW3BXr4dqZJhjvQKQ=; b=Y13i+U+x/AgK3isELAIBDsHkbNux7rc1RKX2+zt0jz+pec7S/CmE3nMb VRCmM4zdkvDAdcOCvgmWIRhu2KQZxmMqMafGeVFyXV7PTILtlb6MyO6vM 2akom2Z1OOv92hF5gKT9b+715PxBS2I4iper+udSswO6k4yJWkmKT02m+ Q=; Authentication-Results: esa5.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none; spf=None smtp.pra=roger.pau@citrix.com; spf=Pass smtp.mailfrom=roger.pau@citrix.com; spf=None smtp.helo=postmaster@mail.citrix.com Received-SPF: None (esa5.hc3370-68.iphmx.com: no sender authenticity information available from domain of roger.pau@citrix.com) identity=pra; client-ip=162.221.158.21; receiver=esa5.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="roger.pau@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa5.hc3370-68.iphmx.com: domain of roger.pau@citrix.com designates 162.221.158.21 as permitted sender) identity=mailfrom; client-ip=162.221.158.21; receiver=esa5.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="roger.pau@citrix.com"; x-conformance=sidf_compatible; x-record-type="v=spf1"; x-record-text="v=spf1 ip4:209.167.231.154 ip4:178.63.86.133 ip4:195.66.111.40/30 ip4:85.115.9.32/28 ip4:199.102.83.4 ip4:192.28.146.160 ip4:192.28.146.107 ip4:216.52.6.88 ip4:216.52.6.188 ip4:162.221.158.21 ip4:162.221.156.83 ~all" Received-SPF: None (esa5.hc3370-68.iphmx.com: no sender authenticity information available from domain of postmaster@mail.citrix.com) identity=helo; client-ip=162.221.158.21; receiver=esa5.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: YyJYPQ6VXMkgmOH9bE1bW7wGRnEWWYVdrhqf1LUNH9JZt+GUSq/a+mDF8iOZMrkfEZepWz3MKB Nbl/e827DePlYKulChWdpxlyiyCPXsSZwI3waKlSrxQtvyQHMnB796aa+296RQS+E6MqK4aQiJ Ih2+dXOCKw2EarPKHZodwm4FdZkwjlQZF+Psh/QfCgm0QI1BZrC0/Rs7ltNVStNAsgoeRAzvAI J0wCCJBaCBN938BDYB6CeYXoTL2y3zsHEmo7JiHgunnzNyMeFLf/2QMEZHcjVWFJqd/8sKSpgQ yWU= X-SBRS: 2.7 X-MesageID: 4340732 X-Ironport-Server: esa5.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.64,380,1559534400"; d="scan'208";a="4340732" Date: Tue, 13 Aug 2019 10:20:00 +0200 From: Roger Pau =?utf-8?B?TW9ubsOp?= To: Chuhong Yuan CC: Jens Axboe , Konrad Rzeszutek Wilk , , , Subject: Re: [Xen-devel] [PATCH v2 3/3] xen/blkback: Use refcount_t for refcount Message-ID: <20190813082000.shprs2ci33v5eapd@Air-de-Roger> References: <20190813061650.5483-1-hslester96@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20190813061650.5483-1-hslester96@gmail.com> User-Agent: NeoMutt/20180716 X-ClientProxiedBy: AMSPEX02CAS01.citrite.net (10.69.22.112) To AMSPEX02CL02.citrite.net (10.69.22.126) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Tue, Aug 13, 2019 at 02:16:50PM +0800, Chuhong Yuan wrote: > Reference counters are preferred to use refcount_t instead of > atomic_t. > This is because the implementation of refcount_t can prevent > overflows and detect possible use-after-free. > So convert atomic_t ref counters to refcount_t. > > Signed-off-by: Chuhong Yuan Acked-by: Roger Pau Monné Thanks, Roger.