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[209.132.180.67]) by mx.google.com with ESMTP id m3si1865726pgg.478.2019.04.18.06.40.21; Thu, 18 Apr 2019 06:40:36 -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; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=canonical.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389158AbfDRNjN (ORCPT + 99 others); Thu, 18 Apr 2019 09:39:13 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:38982 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388375AbfDRNjM (ORCPT ); Thu, 18 Apr 2019 09:39:12 -0400 Received: from [123.118.215.169] (helo=localhost.localdomain) by youngberry.canonical.com with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.76) (envelope-from ) id 1hH7Fq-0005BJ-Co; Thu, 18 Apr 2019 13:39:07 +0000 Subject: Re: [PATCH] nvme: determine the number of IO queues To: Minwoo Im , Maxim Levitsky , linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, keith.busch@intel.com, axboe@fb.com References: <1555510379-20199-1-git-send-email-aaron.ma@canonical.com> <096935354b16662eb481aeda1f48001ba489463c.camel@redhat.com> <99ab1942-9c38-695d-03dc-ea6eecb31217@gmail.com> <130f490e-e173-750d-994e-c00f7c0da080@canonical.com> From: Aaron Ma Openpgp: preference=signencrypt Autocrypt: addr=aaron.ma@canonical.com; prefer-encrypt=mutual; keydata= mQENBFffeLkBCACi4eE4dPsgWN6B9UDOVcAvb5QgU/hRG6yS0I1lGKQv4KA+bke0c5g8clbO 9gIlIl2bityfA9NzBsDik4Iei3AxMbFyxv9keMwcOFQBIOZF0P3f05qjxftF8P+yp9QTV4hp BkFzsXzWRgXN3r8hU8wqZybepF4B1C83sm2kQ5A5N0AUGbZli9i2G+/VscG9sWfLy8T7f4YW MjmlijCjoV6k29vsmTWQPZ7EApNpvR5BnZQPmQWzkkr0lNXlsKcyLgefQtlwg6drK4fe4wz0 ouBIHJEiXE1LWK1hUzkCUASra4WRwKk1Mv/NLLE/aJRqEvF2ukt3uVuM77RWfl7/H/v5ABEB AAG0IUFhcm9uIE1hIDxhYXJvbi5tYUBjYW5vbmljYWwuY29tPokBNwQTAQgAIQUCV994uQIb AwULCQgHAgYVCAkKCwIEFgIDAQIeAQIXgAAKCRDNxCzQfVU6ntJ9B/9aVy0+RkLqF9QpLmw+ LAf1m3Fd+4ZarPTerqDqkLla3ekYhbrEtlI1mYuB5f+gtrIjmcW27gacHdslKB9YwaL8B4ZB GJKhcrntLg4YPzYUnXZkHHTv1hMw7fBYw82cBT+EbG0Djh6Po6Ihqyr3auHhfFcp1PZH4Mtq 6hN5KaDZzF/go+tRF5e4bn61Nhdue7mrhFSlfkzLG2ehHWmRV+S91ksH81YDFnazK0sRINBx V1S8ts3WJ2f1AbgmnDlbK3c/AfI5YxnIHn/x2ZdXj1P/wn7DgZHmpMy5DMuk0gN34NLUPLA/ cHeKoBAF8emugljiKecKBpMTLe8FrVOxbkrauQENBFffeLkBCACweKP3Wx+gK81+rOUpuQ00 sCyKzdtMuXXJ7oL4GzYHbLfJq+F+UHpQbytVGTn3R5+Y61v41g2zTYZooaC+Hs1+ixf+buG2 +2LZjPSELWPNzH9lsKNlCcEvu1XhyyHkBDbnFFHWlUlql3nSXMo//dOTG/XGKaEaZUxjCLUC 8ehLc16DJDvdXsPwWhHrCH/4k92F6qQ14QigBMsl75jDTDJMEYgRYEBT1D/bwxdIeoN1BfIG mYgf059RrWax4SMiJtVDSUuDOpdwoEcZ0FWesRfbFrM+k/XKiIbjMZSvLunA4FIsOdWYOob4 Hh0rsm1G+fBLYtT+bE26OWpQ/lSn4TdhABEBAAGJAR8EGAEIAAkFAlffeLkCGwwACgkQzcQs 0H1VOp6p5Af/ap5EVuP1AhFdPD3pXLNrUUt72W3cuAOjXyss43qFC2YRjGfktrizsDjQU46g VKoD6EW9XUPgvYM+k8BJEoXDLhHWnCnMKlbHP3OImxzLRhF4kdlnLicz1zKRcessQatRpJgG NIiD+eFyh0CZcWBO1BB5rWikjO/idicHao2stFdaBmIeXvhT9Xp6XNFEmzOmfHps+kKpWshY 9LDAU0ERBNsW4bekOCa/QxfqcbZYRjrVQvya0EhrPhq0bBpzkIL/7QSBMcdv6IajTlHnLARF nAIofCEKeEl7+ksiRapL5Nykcbt4dldE3sQWxIybC94SZ4inENKw6I8RNpigWm0R5w== Message-ID: <38bc8924-e553-70d7-c91d-b6c864379b43@canonical.com> Date: Thu, 18 Apr 2019 21:38:59 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 4/18/19 9:33 PM, Minwoo Im wrote: > If the controller returns error for that command, how can we assure that > the controller would support a single I/O queue ? Make sense, I will keep *count = 0 in V2. Thanks, Aaron