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 00ED0C9833F for ; Mon, 28 Sep 2026 10:17:11 +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:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=PuVEngSQheLYbH2VdZ2dStj0xXMV8yzBD03OSKW1OAA=; b=rkAw/G3qOZhhZASH5LdbV2IhJ4 7QHtowtBnYlg5I3cyyvpF0GiXcJ+BaRfSD9y6HvPO7Ume3n/3RveFLQVwtDraze+EyvY9gfyuAzu5 N6r0JW6A8DeggEyJvOLZgNBccXvbmQ73fJdp1Xhxm8RiOfPcAV5u9fYrD6RC1ZKoIdyqptjdA484Q Z5KTLfvmEHlFKEWjcAxVFdcmVZPAiOJdZ2VY1KUcxDkFpKACMhGsdYeU/eMpkja/hHEJIQHzWlLzc NOLPxChpQ2F9QMSRXLVwNImyebqwSCeG1yh4hjydbKLmR8n8esUuMYS1h8C5AlxGOL7+D2FwyadDU GMlByBKg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xB8Q0-00000000KUf-30aA; Mon, 28 Sep 2026 10:17:08 +0000 Received: from out-27.mta1.migadu.com ([2001:41d0:203:375::1b] helo=mta1.migadu.com) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xB8Px-00000000KU6-0fiq for linux-nvme@lists.infradead.org; Mon, 28 Sep 2026 10:17:06 +0000 X-Envelope-To: linux-nvme@lists.infradead.org DKIM-Signature: a=rsa-sha256; bh=S7HtiBzV+yUVKZNtjNQwGaJxuNAlauHZCZOJNOl8s7s=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1790590621; v=1; x=1791195421; b=Y6upoHwc6VjsB+I/0qej22oAk62TU/tvo3je1v8OdNaw4n+f20gmyR+sJ2P+R92+2R7oYQlZ NxFhL9++y/+h1VTBzeq2imwKUQQwd5DwQKoqHhx7M658X3EPbs11NVHKdbqvNHibpHtub8GgGyj GKw9cSCKQE6r812oopxQ1Hvg= X-Envelope-To: linux-nvme@lists.infradead.org Received: by mta12.migadu.com with ESMTPS id 951cb6a3c28291de; Mon, 28 Sep 2026 10:17:00 +0000 X-Mizu-Trace-ID: 951cb6a3c28291de X-Migadu-Flow: FLOW_OUT Message-ID: <2258be48-9e35-4139-b423-82400746db8c@linux.dev> Date: Mon, 28 Sep 2026 11:16:59 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 0/4] fix NVMe multipath partition diskstats To: Christoph Hellwig , John Garry Cc: axboe@kernel.dk, kbusch@kernel.org, sagi@grimberg.me, linux-block@vger.kernel.org, linux-nvme@lists.infradead.org References: <20260921083752.1154316-1-john.garry@linux.dev> <5fe0a938-aaf4-46cb-8fba-3524586ac5b4@oracle.com> <20260928091428.GA29876@lst.de> Content-Language: en-US From: John Garry In-Reply-To: <20260928091428.GA29876@lst.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260928_031705_365871_DCE08DD3 X-CRM114-Status: GOOD ( 11.28 ) 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 On 9/28/26 10:14, Christoph Hellwig wrote: > On Mon, Sep 28, 2026 at 08:30:10AM +0100, John Garry wrote: >> On 21/09/2026 09:37, John Garry wrote: >> >> A reminder on this one ... or are we just going to leave this broken? > > I find the amount of overhead and relatively invasive code very > offputting, and I still don't understand why we now have a strong > urge to address this after 10 years. Nobody noticed (that the values are not maintained), I guess. It may also be useful to have the per-path disk partition table in future for other reasons. Anyway, your call, so I'll leave it for now.