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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C7535C433FE for ; Tue, 17 May 2022 08:11:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=w1JSWBmF6HMyPNCFvDVNzCLM/k7mgBtNuUI93sLEX5g=; b=nlWDg5CCTmD2YB5rlV8W9Ww3TR SiCmRc68gjH3T5bih18se5pchdaO1QFwbN4Kkj8Sim30793Y4z+QewO4H/QZ4LBhkwzQR5u6OBxNr 1OX1CpNwMjnaH8kkzk8BRXrkgV8CXjgfQxl11/mhU13HxK3K9LjYbZG9hMe9p7NoprM8nmKH8U2sa 0TEaziBKquwUS09/I6Kb4meDfBLfJ9AeTzD53j/AMo4c1nLLW3/HLYjwZd3svIb725uwIALsZMv5K setJ9Uf8UoqZb5/JR58gDN+W08DOLCULMkS8Z1OX4n5PbH4DoDXxDnymd8g+nRrrOYqjrotfIDhlS yk8Xrghw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqsIF-00CMR7-Ky; Tue, 17 May 2022 08:10:59 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqsIC-00CMO2-KZ for linux-nvme@lists.infradead.org; Tue, 17 May 2022 08:10:58 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id B1EFE67373; Tue, 17 May 2022 10:10:48 +0200 (CEST) Date: Tue, 17 May 2022 10:10:48 +0200 From: Christoph Hellwig To: Pankaj Raghav Cc: axboe@kernel.dk, damien.lemoal@opensource.wdc.com, pankydev8@gmail.com, dsterba@suse.com, hch@lst.de, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org, jiangbo.365@bytedance.com, linux-block@vger.kernel.org, gost.dev@samsung.com, linux-kernel@vger.kernel.org, dm-devel@redhat.com Subject: Re: [PATCH v4 00/13] support non power of 2 zoned devices Message-ID: <20220517081048.GA13947@lst.de> References: <20220516165416.171196-1-p.raghav@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220516165416.171196-1-p.raghav@samsung.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220517_011056_869256_ED1C2E84 X-CRM114-Status: UNSURE ( 8.77 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org I'm a little surprised about all this activity. I though the conclusion at LSF/MM was that for Linux itself there is very little benefit in supporting this scheme. It will massively fragment the supported based of devices and applications, while only having the benefit of supporting some Samsung legacy devices. So my impression was that this work, while technically feasible, is rather useless. So unless I missed something important I have no interest in supporting this in NVMe.