Received: by 10.223.185.116 with SMTP id b49csp2604346wrg; Mon, 12 Feb 2018 12:26:39 -0800 (PST) X-Google-Smtp-Source: AH8x227APcckqvksyEMfM5hBZoER0ZTBXAyF7uI30WP5HrGklgKro9PgRChDz9LhwbQVO9FNJ6/e X-Received: by 2002:a17:902:a612:: with SMTP id u18-v6mr11912472plq.129.1518467199671; Mon, 12 Feb 2018 12:26:39 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1518467199; cv=none; d=google.com; s=arc-20160816; b=ucVd2iwzft59+bEw5neNlRTyJrVRdHzM920iy+A1MaATPnVgQCLqqbhdtywaZIYZkr MwunIu+oKGqygdel7GGU4UcfswVPWE3pgRWIhi/ddKjZ29yUgOlC5ssBboZwPm5KrSx6 5XRPmRqHsLQ6dNMbZ5FAbECxvTzGVWMUmIbQRRz6As6QggrJ0FLMQgdSMlTKevJzJZhE zVabaF3A7ByXokoxw3LE3KuWwl5fKLQa6GyBohwZB01CYhqBdzIs8wWuaPYXgRiCoJdT HXGo92tVyFp7pA7I6fNdhcM8gylIuIq7v0i5R++BsA2IY4EhY6VChjfOF4G7/WnpGk0e uT9A== 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=awDwrxt90jJANPP0GS8uA++eXq2Udp+NRJqjCo7ZfEI=; b=UkZNZEOcgWoX7ks5k3r35DzBQOeo5cyhPAU8TZ3LbtZvZ7rEWGFVmgxvOZWOyAMMRR xa4Tq0I8qNQbs4iY4UpDoyhJZfP9nR4O1I35whaw5DT7+kxcMPqVEnghx+PrlGiE8CGm mizTfXEuTKe7SQyfbj1elbAmwbbqGB6J+AWx64DMZHZM4MvmFTudE2FiAgreN3pUJMrM edlV963m2SLvrr73rozgIETUwq0uVK4zsGFhDtq48gFfsADFOgM9NXWWWGBFIwiQlxU/ mwD4vHOo8w33yN3WZwFeodgxQQuQA7APhCokLeDqfKgbEVxWTdaOFZTlOJHnlRUj6fYO SqQg== 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 d5-v6si34837plm.759.2018.02.12.12.26.25; Mon, 12 Feb 2018 12:26:39 -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 S1753881AbeBLUZc (ORCPT + 99 others); Mon, 12 Feb 2018 15:25:32 -0500 Received: from mga07.intel.com ([134.134.136.100]:58328 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753393AbeBLUZc (ORCPT ); Mon, 12 Feb 2018 15:25:32 -0500 X-Amp-Result: UNSCANNABLE X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Feb 2018 12:25:31 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,503,1511856000"; d="scan'208";a="26757826" Received: from unknown (HELO localhost.localdomain) ([10.232.112.44]) by FMSMGA003.fm.intel.com with ESMTP; 12 Feb 2018 12:25:30 -0800 Date: Mon, 12 Feb 2018 13:25:19 -0700 From: Keith Busch To: Sagi Grimberg Cc: Jianchao Wang , axboe@fb.com, hch@lst.de, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/3] nvme: fix the deadlock in nvme_update_formats Message-ID: <20180212202519.GA20962@localhost.localdomain> References: <1518440086-583-1-git-send-email-jianchao.w.wang@oracle.com> <1518440086-583-2-git-send-email-jianchao.w.wang@oracle.com> <16c23a0c-666c-802e-2b4e-c6a6da6f016b@grimberg.me> <20180212192009.GE16255@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180212192009.GE16255@localhost.localdomain> User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sagi, This one is fixing a deadlock in namespace detach. It is still not a widely supported operation, but becoming more common. While the other two patches in this series look good for 4.17, I would really recommend this one for 4.16-rc, and add a Cc to linux-stable for 4.15 too. Sound okay? Thanks, Keith