Received: by 2002:ac0:a5b6:0:0:0:0:0 with SMTP id m51-v6csp377248imm; Fri, 1 Jun 2018 02:29:03 -0700 (PDT) X-Google-Smtp-Source: ADUXVKIYiDvFwgQrDxCr3Rgs6huzYfbTXnwY0AAyhk8Rit0Mgcz47+91bpBidWrdt6EAhzLWetHo X-Received: by 2002:a62:91b:: with SMTP id e27-v6mr10170987pfd.93.1527845343136; Fri, 01 Jun 2018 02:29:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1527845343; cv=none; d=google.com; s=arc-20160816; b=u/Sm+N992ipUohBBCLbGtvJNjalmg2lowrcIK5ec5tZ8bgVA2gLYI0ClWgqPsQipDC pLCFgeBrAuqrj2339gLnHxW4H3SWEvGZUC7BUegyQRQQbDjrqpbjLQAoR+BQgG0OLdqD I88lYnYwxyCC6+Ur7frErxB76NAGWdkCWm6N+FKs/Jr1f/I4EgB+Nz3xVKj0zI1dTfel sxwNZXt53FPlP0NVQE9ocwVw4lB0bA/CLVq4EXCYuUj4F1iohBxhGWhalWeNk3Xc43kA Y/lS3JnE6SyCysaJK+8g8nThEd8XE9CFpXMj1ECbb/kzwACyaksxYYVa2mbCTiOywEul wufQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :arc-authentication-results; bh=ajEPcFTty0CyowxBzY8YkJHd2QzCguu0cxC17nLBgZ0=; b=C4Bm8QS8LikFtlkTMS8mB1TBF7Nv+TGJvhZkWAI7vmwa0nkDvf2XXHPa+BCqapmICU X0XhAbXclXw/2IgqIjo64F6w8O2URBAjG1i/a9QNbiagDLaAG5LWYGQJOLipAHMp2PEh p/MoVqWG1IFuoPZel7tUICPo2Fy9m0dBnhrNuR/Ze7EbfkypB1YwwGddUIGIOJJUxTN7 iZM6LdPZI9BXcm8a1qzUQEN1PDplh+RHv64/04Ms3MV8TfEr1adB9cwQiWOHfTe3qHWq mg+zpJwvp2BMUEiDhPngEp3HOTnc/lGHpSaoXMJluUJzUuvEJ9FZCahHx49yEy2wjTaz jYXQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id o77-v6si13608728pfk.276.2018.06.01.02.28.48; Fri, 01 Jun 2018 02:29:03 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751487AbeFAJ2R (ORCPT + 99 others); Fri, 1 Jun 2018 05:28:17 -0400 Received: from lilium.sigma-star.at ([109.75.188.150]:50824 "EHLO lilium.sigma-star.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751170AbeFAJ2M (ORCPT ); Fri, 1 Jun 2018 05:28:12 -0400 Received: from localhost (localhost [127.0.0.1]) by lilium.sigma-star.at (Postfix) with ESMTP id 3AC7D1818FA10; Fri, 1 Jun 2018 11:28:10 +0200 (CEST) From: Richard Weinberger To: Gao Xiang , LKML Cc: linux-fsdevel , miaoxie@huawei.com, yuchao0@huawei.com, sunqiuyang@huawei.com, fangwei1@huawei.com, liguifu2@huawei.com, weidu.du@huawei.com, chen.chun.yen@huawei.com, brooke.wangzhigang@hisilicon.com, dongjinguang@huawei.com Subject: Re: [NOMERGE] [RFC PATCH 00/12] erofs: introduce erofs file system Date: Fri, 01 Jun 2018 11:28:07 +0200 Message-ID: <1670077.cnVahIradn@blindfold> In-Reply-To: References: <1527764767-22190-1-git-send-email-gaoxiang25@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Freitag, 1. Juni 2018, 11:11:21 CEST schrieb Gao Xiang: > > In which sense is it extendable? > > Actually, the meaning of an enhanced (means not just read-only, but with the scalable > on-disk layout, compression, or fs-verify in the future) read-only file system is emphasized. ah ok. > We also think of other candidate full names, such as > Enhanced / Extented Read-only File System, all the names short for "erofs" are okay. TBH, I read "erofs" as "error fs". ;-) > > How does it compare to existing read only filesystems, such as squashfs? > > > > You are quite right. > > We are now focusing on improving our decompression subsystem and > these numbers will be successively added in the future non-RFC patches. > > We haven't pay much attention on comparing squashfs and erofs > yet since we once tried to use squashfs on our products with > different block sizes several years ago, it behaves > unacceptable in the low free memory scenario besides its > performance. I'm interested in the comparison because I use squashfs often for embedded devices on top of ubiblock (raw nand). If there is something that can do better, I'm all for it. Thanks, //richard -- sigma star gmbh - Eduard-Bodem-Gasse 6 - 6020 Innsbruck - Austria ATU66964118 - FN 374287y