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=-9.0 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, 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 E29C5C4338F for ; Mon, 16 Aug 2021 07:43:49 +0000 (UTC) Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (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 A851961ACF; Mon, 16 Aug 2021 07:43:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org A851961ACF 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.sourceforge.net Received: from [127.0.0.1] (helo=sfs-ml-4.v29.lw.sourceforge.com) by sfs-ml-4.v29.lw.sourceforge.com with esmtp (Exim 4.90_1) (envelope-from ) id 1mFXHg-0008Tc-Vg; Mon, 16 Aug 2021 07:43:48 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-4.v29.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mFXHf-0008TR-1E for linux-f2fs-devel@lists.sourceforge.net; Mon, 16 Aug 2021 07:43:47 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:Cc:To:Subject:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=s+63QJ05dtCVukhGva5F/UPrKhdv+C6Z4TSULz1aydM=; b=NKdGDHr2mBxMyMlXtUOmW3tf8g HOtU5uT3sd2m29MlKDbN9PGuBVGISknJhut15hni6RmyZnCnIHpKG1SE8rECGbbq86Y3WXXaGJrPK rVf5lUrxBau1uTv/AYDdtau6WJfxJcl4H27T2/s42Mc5Nis9qprqt7GSU2C7Fa0/IeoQ=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:MIME-Version:Date: Message-ID:From:References:Cc:To:Subject:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=s+63QJ05dtCVukhGva5F/UPrKhdv+C6Z4TSULz1aydM=; b=JDp5cHFMtWC9j6Yu/IyKyLYjml t+9Uf6bA6C5q6QmneOCqZy39vK67SJ4wU6+/1mk3I61iksLW+93b04up3c9CF6/UK69f2MT0dRXPQ NFNW3fyiSHrOuD+42P+IAFHSrZdNbqGQjmjnhK3hmtgecoVRR7PcqIOh/4XeAbsIJaZA=; Received: from mail.kernel.org ([198.145.29.99]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92.3) id 1mFXHd-0003A8-7A for linux-f2fs-devel@lists.sourceforge.net; Mon, 16 Aug 2021 07:43:46 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id BA1C761ACF; Mon, 16 Aug 2021 07:43:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629099819; bh=U/7WQDfo/Qzy9+DjcIIAqHhrpYiE7FohGVxSzIJvDVo=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=h8CnmTOXZnIpGStqbefpN8NqUfXS02jg7aHR4K+eppyHbzr+9JN/t2BYf/EykzQQe zvQr0wbG/MTqFl3mXTzk5Z4ofW7x010aZFcYRoOfJvWWztgAm6e5Z2gAhoDOInhA/6 8SF6A9eA5QMGMs3QBPWL+MeRocZu4bX6UOR62fx/EUK/zvEa/MiXHa0rL3xUPzM+Nm o4419Beq4E4sVz7YDZ0CpAE4o0Y/OaD3Ij0Yf7ByapyFK3KkjjTFZDcST9skepALrR yc1T3dhg8CMVanxf/smyUOMzTMvD77u40/gK8mCQBKf7w64AfOwDT/0KsgwoFzHrLK 2KP3sM1FUyK+g== To: Daeho Jeong References: <20210809185449.2565768-1-daeho43@gmail.com> <425daf77-8020-26ce-dc9f-019d9a881b78@kernel.org> <071534dd-cf10-38d3-b83b-c833f9c0a70a@kernel.org> From: Chao Yu Message-ID: <50bfbeee-e165-5bcf-1c47-a45ef8b36ebf@kernel.org> Date: Mon, 16 Aug 2021 15:43:36 +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: Content-Language: en-US X-Headers-End: 1mFXHd-0003A8-7A Subject: Re: [f2fs-dev] [PATCH v2] f2fs: introduce blk_alloc_mode mount option X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daeho Jeong , kernel-team@android.com, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On 2021/8/16 15:11, Daeho Jeong wrote: > I agree with you. But still I think "fragment" mode should work even > in low free space conditions. > Otherwise, it will be seeking the free blocks again and again like a busy loop. > Or we can change the block allocation way into adaptive mode under low > free space even staying in "fragment" mode. I think fallbacking to adaptive mode sounds good to me, so the condition of fallback may be there is no more free segments? Thanks, > > If we can handle this, we might use "fragment" mode for both > simulating after fragmentation and making the filesystem fragmented. > _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel