Received: by 2002:a05:6a10:5bc5:0:0:0:0 with SMTP id os5csp2621299pxb; Sun, 17 Oct 2021 20:45:27 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz9NR58ltuSJIM/M0xgtvD14C+bZWSDkpfKqxMiZF2kO4dkv7tUlwQgMeaUUWMmkW7CDx41 X-Received: by 2002:a17:902:e5cb:b0:13f:25b7:4d50 with SMTP id u11-20020a170902e5cb00b0013f25b74d50mr24809859plf.38.1634528726926; Sun, 17 Oct 2021 20:45:26 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1634528726; cv=none; d=google.com; s=arc-20160816; b=cu/wOIfyHSXPShYrvSizHcwev4TylaiywPgJFyNzmYL8LWynOhG/NPtrtSf0/YPA8R C4oDW21PJZZqlwgv6KjguCBfrhzTc1vkrhvv0rKSLoFUphPX7mTI+UpzJwJUOhww7LNh CJ0s8Z7KRThaA0rKZ1ah1afTofzelMP65bj+72pZQrvhyC9RFqZUGSY5ynKJS6obbLUj Bow+mX+YuJEnvDmf36otLzezxzCRjPjMOgAHh7l3rXTKIpp8fN0HxrsoXyrKYMCmm5Eg ro6ghucniec28ZXNFd2hRXo5o04bdq/5rQOHoDdwKT31yzh/HlDiyUiLVySHkJHJt/oV Cfxw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:in-reply-to:from :references:to:content-language:subject:user-agent:mime-version:date :message-id:dkim-signature; bh=czloUW0pBNfC5YKhZ94ql/0a1/m///be6MWCspKw9Zw=; b=rBcjyLSU2ltKBsJY7Ql9WxQcr12Nt6mo85ueyxRFusB4hSynjVWsipR4/6owdNFYNQ BsVpkQJHBW9XzM7fA2FICPv471kOqUUSPCA93fpeP/cbTHLmPj6W3SlTCtjjM6BbV18j 3XNPMXSFdltW9JL501ZQvNVno1Ws0QDThVy2vJJqazj0qB5qTX7Xo5DRg70IxLo52T7B Ty9CBBygyIrRQ5OWHlkeeactVqrYLJz7BaessnKaJxaZREyGhLwgs3BQgSbeGNV8DRwR 7TmqHsCPjmv+AYaOZyfPE+tSgIiZ65fwOBn7mGyC0OTPe+/jxjUJBmfK34JWCUVR5jZI 7I2A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=joOfFlaW; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id bc12si6816890plb.31.2021.10.17.20.45.15; Sun, 17 Oct 2021 20:45:26 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=joOfFlaW; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343947AbhJQPCk (ORCPT + 98 others); Sun, 17 Oct 2021 11:02:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:41676 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241731AbhJQPCj (ORCPT ); Sun, 17 Oct 2021 11:02:39 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D5E2860C4D; Sun, 17 Oct 2021 15:00:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1634482829; bh=CZmDICCzhkLK1KqmUZwDtCRFPPI+j7qhJXvlQjcBucg=; h=Date:Subject:To:References:From:In-Reply-To:From; b=joOfFlaWsD0EXuPnkTu8K4hBQDmSPKsg+zGvTOIf1Rvk7cBGUZx4wstFzG1b0JlA/ VR6TzH8mqygi009HKbyo2GYrL9Fl9R/7PK0WYdpDHaXSp0gwWdLqJ+HA30qdq91FKS FBtfoe69HJM1UvEF/0fH4WwB4vmDAigRmy8X4TqDP312q1t24dWsJZxONuwWABGNCR yhjGCu8QRMiEmimPsf3FYspEluZge4iQfslvvc8DZGr/WEaTPkYtOKlBYVCzG9pvKV oGqDf/fJG/tY/JmvhJZY3aZv0awmlAgxoKeO1Ru2WpwjhpAfrzH7CWXcJb7P9+2gYI Iguqp442JncKg== Message-ID: Date: Sun, 17 Oct 2021 23:00:16 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [PATCH v6 2/2] erofs: add multiple device support Content-Language: en-US To: Gao Xiang , linux-erofs@lists.ozlabs.org, Liu Bo , Yan Song , LKML , Peng Tao , Joseph Qi , Changwei Ge , Liu Jiang References: <20211010063345.28183-1-xiang@kernel.org> <20211014081010.43485-1-hsiangkao@linux.alibaba.com> <20211017041523.GA15116@hsiangkao-HP-ZHAN-66-Pro-G1> From: Chao Yu In-Reply-To: <20211017041523.GA15116@hsiangkao-HP-ZHAN-66-Pro-G1> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2021/10/17 12:15, Gao Xiang wrote: > Hi Chao, > > On Sun, Oct 17, 2021 at 10:10:15AM +0800, Chao Yu wrote: >> File won't locate in multidevices, right? otherwise it needs to shrink mapped length >> as well. > > Thanks for your review. > > File can be located in multi-devices. But it's intended as I mentioned in the commit > message, each extent won't cross devices, which is guaranteed by mkfs seriously. > Otherwise, it's more complicated to handle (especially for the compression side) and > has no more benefits. Thanks for the explanation. Reviewed-by: Chao Yu Thanks, > > Thanks, > Gao Xiang > >> >> Thanks,