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=-12.3 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,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 21973C4320A for ; Thu, 19 Aug 2021 03:32:45 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3E919610CE for ; Thu, 19 Aug 2021 03:32:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 3E919610CE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Gqr1k5tK5z3bXl for ; Thu, 19 Aug 2021 13:32:42 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=F2XWpu8Y; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=chao@kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=F2XWpu8Y; dkim-atps=neutral Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Gqr1b5s2gz2yX6 for ; Thu, 19 Aug 2021 13:32:35 +1000 (AEST) Received: by mail.kernel.org (Postfix) with ESMTPSA id 24F5A6044F; Thu, 19 Aug 2021 03:32:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629343952; bh=J7zcvWJK4OZy21e19EhcGy6y2c9vUU1+2tNmbKsF1BA=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=F2XWpu8YCwp5nqppcPKjiZOzdqvQDP1osizNCVr07bdVh1blCdJfEvkOUfeOzGdwu WlWUhM2fgs1QjhRWI8ZyhJiNBqsb/KT1UBzv9IXsQcEqaT921SbdDEU98+u2LHp0OG alPf1x2pYsh82yweh6DrhLV45g8Rn673KEhazh6101pY343f/ZQt6zM+E9cLT4k3fe znAARZpkuU+ToyhFGbH2I6HihM86KXRn+bOivYFEPh30qZsOSuAevC2ffvG2N+EYWy STVMENPyVOLTLGBKtPYsCD4IDnlaq/w9x+xDsDtFl61kMymuBzJ4IYRPk9WD5NOJa8 UX1NIE7F5lejQ== Subject: Re: [PATCH 1/2] erofs: introduce chunk-based file on-disk format To: Gao Xiang , linux-erofs@lists.ozlabs.org, Liu Bo References: <20210818070713.4437-1-hsiangkao@linux.alibaba.com> From: Chao Yu Message-ID: <8e7291cf-8baf-2a79-997e-4847faa109db@kernel.org> Date: Thu, 19 Aug 2021 11:32:29 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <20210818070713.4437-1-hsiangkao@linux.alibaba.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: linux-erofs@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development of Linux EROFS file system List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Joseph Qi , Eryu Guan , Liu Jiang , LKML , Peng Tao Errors-To: linux-erofs-bounces+linux-erofs=archiver.kernel.org@lists.ozlabs.org Sender: "Linux-erofs" On 2021/8/18 15:07, Gao Xiang wrote: > Currently, uncompressed data except for tail-packing inline is > consecutive on disk. > > In order to support chunk-based data deduplication, add a new > corresponding inode data layout. > > In the future, the data source of chunks can be either (un)compressed. > > Signed-off-by: Gao Xiang Reviewed-by: Chao Yu Thanks,