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=-9.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 51F4CC63797 for ; Thu, 22 Jul 2021 18:40:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37B7860E78 for ; Thu, 22 Jul 2021 18:40:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229763AbhGVR7e (ORCPT ); Thu, 22 Jul 2021 13:59:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229502AbhGVR7d (ORCPT ); Thu, 22 Jul 2021 13:59:33 -0400 Received: from mail-pl1-x62b.google.com (mail-pl1-x62b.google.com [IPv6:2607:f8b0:4864:20::62b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9E5E3C061575; Thu, 22 Jul 2021 11:40:08 -0700 (PDT) Received: by mail-pl1-x62b.google.com with SMTP id i1so101673plr.9; Thu, 22 Jul 2021 11:40:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=5bwPh4/SG5Is3ZmUD4q2FFYMSdDYfhVtUgR3DiH/TBs=; b=gVPRYw4kDLqfJXNklmaLjldwfA6sQztZEchLWfkBjAvqmYwLSbAVWUmC8bHXpvOMe4 JmaE7Fr4yjpwVxZE5ceEy28bm8G4ZedypVOSoau6W8uVJpHHgyP/di8fdPFFQioSKElh 7rdZsNsxy/rJwbgMiBMtFIjLTapgMjlnzclSIhJw/AihVLGeno1E8nu54LAg32Na9QbK h25WhSoSY5HgCoBwJQeRdMsiUmhhRfWBY6MWgqO53qv61V75PlBZ0pZ337ox0W5VZMvy rVFAZmAS55xzPd2Y40XA4Aug0plDg1mBWub6ffKkXyzs51TwrzRtpvp2/T+GMdAeAz1P grJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=5bwPh4/SG5Is3ZmUD4q2FFYMSdDYfhVtUgR3DiH/TBs=; b=DkQShywtniiM5O310e6wSuAbHg8Ox7ex7aeBEZqb3KmTHkq7iKkKJHIVS/ZPLO2Wiq wAZ+jsqjmjo9O6T662FOQ5cRS6IKRB8GFC8ggGdmiN+cKWhkJkgNNL/zFEbk/fO0zXYO 9qKu9EbEl2ZVfIFq52jUueBF7QuAUcs8dVCNKCSMqAA6uvDJ2oik5+KR7uhIsxEuAEnE LEQNmFP7DVasfHPhiIisWgF/YLeKgY3AgZLo6CpDU944RBSxEbJFGZ61mzTGP0KRyc6H 1F7YBe8/kZMJE3Z03FHFpxVUxL8WMHJwiXn3+K6BeGWm9ghO+a2HXUuAEi1scEwJZN+u VW3Q== X-Gm-Message-State: AOAM533AOrhXEYenVMFgNPvLamD7qvtB2NmUAsMXm4trlmSUf5JUtbXA ZA4quQ+M3Y9V1UuPijxSszsuJWa5LJ0+LA== X-Google-Smtp-Source: ABdhPJx2zDlHRsCRkzeMZ3lHbq0iyMXwR+hCIb74LQx4/twMvM0ilVYeQEfXdIMa04arM5DR4UbOAQ== X-Received: by 2002:a63:338d:: with SMTP id z135mr1258103pgz.265.1626979208086; Thu, 22 Jul 2021 11:40:08 -0700 (PDT) Received: from [172.20.10.6] ([172.58.22.135]) by smtp.gmail.com with ESMTPSA id z5sm4664360pgz.77.2021.07.22.11.40.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 22 Jul 2021 11:40:07 -0700 (PDT) Subject: Re: [PATCH 7/9] loop: don't grab a reference to the block device To: Christoph Hellwig , Jens Axboe Cc: Josef Bacik , David Sterba , Naohiro Aota , linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org References: <20210722075402.983367-1-hch@lst.de> <20210722075402.983367-8-hch@lst.de> From: Chaitanya Kulkarni Message-ID: Date: Thu, 22 Jul 2021 11:40:06 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20210722075402.983367-8-hch@lst.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 7/22/2021 12:54 AM, 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: Chaitanya Kulkarni -- -ck