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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 78EEDC433EF for ; Tue, 19 Oct 2021 12:57:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5871261360 for ; Tue, 19 Oct 2021 12:57:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235767AbhJSM7M (ORCPT ); Tue, 19 Oct 2021 08:59:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:44646 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235689AbhJSM7F (ORCPT ); Tue, 19 Oct 2021 08:59:05 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 5ED4461360; Tue, 19 Oct 2021 12:56:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1634648213; bh=rpzdWCUEobf/IDekmzPNEYMxSWhS5XWJoeBbvCLEQ2U=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=SkAI15oe3aJqLCpSAzrO1oNSzlppscoCUOiUzA7fi5zu5mUJQpLt+Sa3RWydsPguM dsNBiEP7+oW61RI4tzrMR0HfkwfNwH86kvNPsO+0v4pgkPLrX4itZVmg05Usljt3CS aTh0bKM+noFjYEpCyQEa9/GI6ANXD4XEXQ+JhJktuCUAJW8iNONdW7o4trS39Fnkc2 vI5I9/+PAnkXymgQYL0ovGmzFysbOBVTavIqa+3EwcKrMQ3ZINlXokDxm0mEv2klK6 xEpCCOLbDPkh3fonvx/HGEzuARRjoZIT5bPtjEbc+vyLnYBZNAmcx0/NJChmnE0zDp WTjbJoHioE+3A== Message-ID: Date: Tue, 19 Oct 2021 20:56:48 +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 v4 2/3] erofs: introduce the secondary compression head Content-Language: en-US To: Gao Xiang , linux-erofs@lists.ozlabs.org Cc: LKML , Gao Xiang , Yue Hu References: <20211009181209.23041-1-xiang@kernel.org> <20211017165721.2442-1-xiang@kernel.org> From: Chao Yu In-Reply-To: <20211017165721.2442-1-xiang@kernel.org> 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 2021/10/18 0:57, Gao Xiang wrote: > From: Gao Xiang > > Previously, for each HEAD lcluster, it can be either HEAD or PLAIN > lcluster to indicate whether the whole pcluster is compressed or not. > > In this patch, a new HEAD2 head type is introduced to specify another > compression algorithm other than the primary algorithm for each > compressed file, which can be used for upcoming LZMA compression and > LZ4 range dictionary compression for various data patterns. > > It has been stayed in the EROFS roadmap for years. Complete it now! > > Reviewed-by: Yue Hu > Signed-off-by: Gao Xiang Reviewed-by: Chao Yu Thanks,