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=-10.2 required=3.0 tests=BAYES_00, 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=ham 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 1903BC63777 for ; Thu, 3 Dec 2020 07:06:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A7EC9208A9 for ; Thu, 3 Dec 2020 07:06:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387702AbgLCHGf (ORCPT ); Thu, 3 Dec 2020 02:06:35 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:8233 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725912AbgLCHGf (ORCPT ); Thu, 3 Dec 2020 02:06:35 -0500 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4Cmn0J5m47zkkmH; Thu, 3 Dec 2020 15:05:04 +0800 (CST) Received: from [10.136.114.67] (10.136.114.67) by smtp.huawei.com (10.3.19.207) with Microsoft SMTP Server (TLS) id 14.3.487.0; Thu, 3 Dec 2020 15:05:36 +0800 Subject: Re: [f2fs-dev] [PATCH v2 1/2] f2fs: add compress_mode mount option To: Daeho Jeong , , , CC: Daeho Jeong References: <20201201040803.3590442-1-daeho43@gmail.com> From: Chao Yu Message-ID: Date: Thu, 3 Dec 2020 15:05:36 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20201201040803.3590442-1-daeho43@gmail.com> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.136.114.67] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020/12/1 12:08, Daeho Jeong wrote: > From: Daeho Jeong > > We will add a new "compress_mode" mount option to control file > compression mode. This supports "fs" and "user". In "fs" mode (default), > f2fs does automatic compression on the compression enabled files. > In "user" mode, f2fs disables the automaic compression and gives the > user discretion of choosing the target file and the timing. It means > the user can do manual compression/decompression on the compression > enabled files using ioctls. > > Signed-off-by: Daeho Jeong Reviewed-by: Chao Yu Thanks,