Received: by 2002:a05:6a11:4021:0:0:0:0 with SMTP id ky33csp2378075pxb; Mon, 20 Sep 2021 20:43:40 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxyHHio8nhcvU4BOj5LoOMtnT+fEI2WZTQHCnh16ba1cuPgS45K3KXvIuZAPdMUsW1CUILU X-Received: by 2002:aa7:c04a:: with SMTP id k10mr34106478edo.32.1632195820608; Mon, 20 Sep 2021 20:43:40 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1632195820; cv=none; d=google.com; s=arc-20160816; b=e7wnTZnVtUocxlwUCNYFA0zsNsl5LWTWdAY2msBHQNuIIpyrEW+vMysXMHtlaOTtjZ TJB6DpEJnWlaFzQDVF47TM8Q6+F+LMzU+1E6iY0jL2DgCvqrtfUdVewBhRVLMrcJ7xDL y5WtYct/qpJfGX9YJ6omCRxA+Vv65+9eLf9IADgUqNnfhMxlcv2UiPhhCzvLq/qEa87c +ZhEsLdIn8HQAh8qwj+7O7rl2zb23M115HLl8tLaUhz9XBEEsYry3K/Y2ymoV/Xt4s6V x6ObjC3m/XxQMhde5/Se06mZt4XW6+WspRs+YiU+IOTiTNGSxeMQWAgXtYmCh23krMhE LwJQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=d0Nemd4hHJgSVfWJNr3qQUJaMHliAtJbCFFPWym3UK8=; b=DXHrtrek4VB3QmWvu4RsWusACxZr6IO0AfytSFAI9Iu9iPlc8/dGjcLPCpESwX+ggq anS0oabmANmxoO/VH73eDBB46hYyT3iLe8gTLYXfr0DZLPQ4O97JqmmPuwwmHfNJxyRI fmFEvEeRJO63Pu6MOyhYIEf9JE0nRXagvxWAZKI//xIrKGQec2YNPC34rekWhkV4C2Di GA8DJIhvMbBdu4UZYatOKgIL80AUuHIdFAeYfrrrtrdbfXdPkdmUviLiqVy99WE9xjKf Cug6vN6S94T7eFm3jaejfYt1gcBxdSwgnB1ge2toeLlNQGurKHeFGybVIKRpzGVP2zpj +S2w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=ZhosC+o0; 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 b4si17900539eds.333.2021.09.20.20.43.17; Mon, 20 Sep 2021 20:43:40 -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=ZhosC+o0; 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 S239310AbhITXBZ (ORCPT + 99 others); Mon, 20 Sep 2021 19:01:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:36258 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232016AbhITW7Y (ORCPT ); Mon, 20 Sep 2021 18:59:24 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D02C0610A0; Mon, 20 Sep 2021 22:57:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632178677; bh=t32r/UNDAKqQ2H+2kaeKxyON17il0qBt5QdF2iYLzZU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZhosC+o0YPt67CpA3fw8kRB1RXniPzCZesIhuvdeBL+wpXNT4Sl12rr1CFkS9nmbI d/EANN9Fmgkf2bjeqEoaQ69Lk0rCKQZ7sBupWl+xvyoBVt5iKUeXYX8MqrTGnpXV0l Nm9MHTFMVrSLlj/twxw+Mm+bfJBRjYa3T1MV6IWH9SspASg2DiupGjmxNgTjQnH6jA skrE0+DL6T4dB3xXfOwTYXnZn03oHmUQeZjsPN/O0FKqhUIxTToRusKwhCLiP73ljK xa3YK3ozMBh78upKlfKDacQOxd2u8gi6mrSjGRvMNUaKyEGrP5Apo51dDt9/duXUEb 0aRaK/ac7MQ2w== Date: Mon, 20 Sep 2021 15:57:55 -0700 From: Jaegeuk Kim To: Chao Yu Cc: Daeho Jeong , Daeho Jeong , kernel-team@android.com, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Subject: Re: [f2fs-dev] [PATCH v4] f2fs: introduce fragment allocation mode mount option Message-ID: References: <20210902172404.3517626-1-daeho43@gmail.com> <9f4a2954-e8c9-abc5-5df4-a7cec53433a3@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9f4a2954-e8c9-abc5-5df4-a7cec53433a3@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/12, Chao Yu wrote: > On 2021/9/11 7:13, Jaegeuk Kim wrote: > > Wait. Why do we need to add so many options here? I was expecting to see > > performance difference when getting random segments or random blocks as > > an extreme case. I don't get the point why we need the middle of those cases. > > I guess we can simply the aging test procedure of filesystem by changing a bit > based on this patch. My question was on "fragment:fixed_block". > > See comments in below thread. > > https://lore.kernel.org/lkml/425daf77-8020-26ce-dc9f-019d9a881b78@kernel.org/ > > Thanks,