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=-11.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 761EBC4338F for ; Mon, 26 Jul 2021 10:17:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5DFFD60F22 for ; Mon, 26 Jul 2021 10:17:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232202AbhGZJgz (ORCPT ); Mon, 26 Jul 2021 05:36:55 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:42165 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231639AbhGZJgz (ORCPT ); Mon, 26 Jul 2021 05:36:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1627294643; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=qvooalKqaksodbnEb98trPc90g6gz5WIFCvmG4lsvoU=; b=Hp5U44QhtDaayQ4IOKotiMpdb+h+OD57tIwxneFw7IY+ujo5XCleOAiSCmcUmkAv15ZQYO /NJZGaHwyadeF7UcCj9f/W8cxEaXej/tlMKySYOCTzbO3yAbe4xebwdhx1vHG0xjxDWAw0 B7zRXzdG8uXLvfEx6DcBD+r90gMxQzM= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-369-lbQTvKNUPMerpFZL-JCigQ-1; Mon, 26 Jul 2021 06:17:22 -0400 X-MC-Unique: lbQTvKNUPMerpFZL-JCigQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9D145800D55; Mon, 26 Jul 2021 10:17:20 +0000 (UTC) Received: from T590 (ovpn-13-107.pek2.redhat.com [10.72.13.107]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 920095D9D3; Mon, 26 Jul 2021 10:17:13 +0000 (UTC) Date: Mon, 26 Jul 2021 18:17:11 +0800 From: Ming Lei To: Christoph Hellwig Cc: Jens Axboe , Josef Bacik , David Sterba , Naohiro Aota , linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org Subject: Re: [PATCH 06/10] block: change the refcounting for partitions Message-ID: References: <20210724071249.1284585-1-hch@lst.de> <20210724071249.1284585-7-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210724071249.1284585-7-hch@lst.de> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Sat, Jul 24, 2021 at 09:12:45AM +0200, Christoph Hellwig wrote: > Instead of acquiring an inode reference on open make sure partitions > always hold device model references to the disk while alive, and switch > open to grab only a device model reference to the opened block device. > If that is a partition the disk reference is transitively held by the > partition already. Reviewed-by: Ming Lei -- Ming