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=-12.2 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,URIBL_BLOCKED autolearn=unavailable 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 978D6C6377D for ; Thu, 22 Jul 2021 08:57:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7BC2361357 for ; Thu, 22 Jul 2021 08:57:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230501AbhGVIRA (ORCPT ); Thu, 22 Jul 2021 04:17:00 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:28881 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230330AbhGVIQ7 (ORCPT ); Thu, 22 Jul 2021 04:16:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626944254; 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=AlukC45qRYlbnd8cgO3tOzCzBLVfqt85AH8OGPwDcnU=; b=Nws8ZQn+1qe0n5DOvQS/6U0q5R/SbCvYhvWUTg9GwVwt2d1HBnEQKOXFOf9rnr0xqyAAzY ioRDFWFNxqklgLx7Ltkjpm71jf46UGxBJ66MweNainpTCXWqjwjHLcVJaiTBWHwqL5Sf3U NoDu0/pQuktMqmqUmZ6DjHkT3LQBD7s= 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-138-D-rS2v6MMBu2uggajGeVKA-1; Thu, 22 Jul 2021 04:57:30 -0400 X-MC-Unique: D-rS2v6MMBu2uggajGeVKA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 821733E75E; Thu, 22 Jul 2021 08:57:29 +0000 (UTC) Received: from T590 (ovpn-13-219.pek2.redhat.com [10.72.13.219]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 33AB31970E; Thu, 22 Jul 2021 08:57:20 +0000 (UTC) Date: Thu, 22 Jul 2021 16:57:15 +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 7/9] loop: don't grab a reference to the block device Message-ID: References: <20210722075402.983367-1-hch@lst.de> <20210722075402.983367-8-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210722075402.983367-8-hch@lst.de> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Thu, Jul 22, 2021 at 09:54:00AM +0200, Christoph Hellwig wrote: > The whole device block device won't be removed while the disk is still > alive, so don't bother to grab a reference to it. > > Signed-off-by: Christoph Hellwig > Reviewed-by: Josef Bacik Reviewed-by: Ming Lei -- Ming