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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 BCF41C07E99 for ; Mon, 5 Jul 2021 10:42:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A1B3F6135B for ; Mon, 5 Jul 2021 10:42:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231194AbhGEKos (ORCPT ); Mon, 5 Jul 2021 06:44:48 -0400 Received: from verein.lst.de ([213.95.11.211]:56476 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230168AbhGEKor (ORCPT ); Mon, 5 Jul 2021 06:44:47 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id 5450D68AFE; Mon, 5 Jul 2021 12:42:08 +0200 (CEST) Date: Mon, 5 Jul 2021 12:42:08 +0200 From: Christoph Hellwig To: "Shivamurthy Shastri (sshivamurthy)" Cc: Christoph Hellwig , "kbusch@kernel.org" , "axboe@fb.com" , "sagi@grimberg.me" , "linux-nvme@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "shiva.linuxworks@gmail.com" Subject: Re: [EXT] Re: [PATCH] nvme: Add abrupt shutdown support Message-ID: <20210705104208.GA14891@lst.de> References: <20210705101157.1009135-1-sshivamurthy@micron.com> <20210705101554.GA12803@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 05, 2021 at 10:40:21AM +0000, Shivamurthy Shastri (sshivamurthy) wrote: > Micron Confidential > > Hi Christoph, > > > > > > > On Mon, Jul 05, 2021 at 10:11:57AM +0000, shiva.linuxworks@gmail.com wrote: > > > From: Shivamurthy Shastri > > > > > > Enabling the abrupt shutdown support. In this shutdown type host does > > > not need to send Delete I/O Submission Queue and Delete I/O Completion > > > queue commands to the device. > > > > Why? > > This is to achieve faster shutdown at the cost of data in-flight. What is the actual use case, and why would a module paramter be a good interface?