Received: by 2002:a25:c593:0:0:0:0:0 with SMTP id v141csp662108ybe; Fri, 6 Sep 2019 05:32:50 -0700 (PDT) X-Google-Smtp-Source: APXvYqztb/Ga4oNsAaH5ZXFjtcv0/lAq4Nm5EjL9e+HNrY5dQp1iMiY94uAw0nUFMwZUredahNvc X-Received: by 2002:a63:a011:: with SMTP id r17mr7881461pge.219.1567773170225; Fri, 06 Sep 2019 05:32:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1567773170; cv=none; d=google.com; s=arc-20160816; b=t5w99Dp0wh3fL1GO7+06pp0ylIBbAbFl+vSlcMK7M6Mou2T68Z765HymKe5bXMcFu2 nnH6ULYXt8UY26zig8AD+wV8Ny9w6iIHZTHmPOH/ghfwEe6ECeAdP9bfiRpfXaEc8n9O imTANBWyWmljt9fSfpmeA1z9tl9I5Xok+bEkVSjbYuoyKRYbth4x7Uk5bvWFdeJIsYvJ P4Fp4Fw65f5qdORUPnCZvdTgML8+8OZqzLuPBRNVmm36JRXaZQXG1cnSqUck4eXfrCqc 8U+PTOYz3I4w04gS3qu7X+7p94FZbuNL0v7qF5OHMrr/n3gh1qnrPLv/IgyaBfK2JTpu E89A== 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 :content-language:in-reply-to:mime-version:user-agent:date :message-id:references:cc:to:from:subject; bh=JtuJSAdwQOIWOdxuHZWdUsfyr563l6BH7Bs2eqZtkUw=; b=Y/+w2Lee7QlZeCcdXVb9U89eao/MzPdjNuH3s1AhcJgGBCtDqg3JIQxXdL/QOS8nPY cgegusHqzTF8O58vkKHUS4JLPt8OuaIDR9AsM8VDedBJFSlejN9Fo6rR3JxIfBAn7y39 w3EHmvWSWE215r5lV3yUiaFR7qPAsEnRHiy2xB3yKRa6wn+1QQQEurDDnLtgUKTQiqO2 qchrL6yiCqJiSbVVHUC9U0qm1MjXE0yNZg2q/njMGyh/CMPF3R6pSUwZ74ml+4dGJUem rl2iaqph+MtfYSbhsVtthZtwjB3HNDtLNfXnJ3Ziy003QLsTQB6BBX4zT6PYkX4dsGIG HFTw== 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 b14si4233050pgi.587.2019.09.06.05.32.33; Fri, 06 Sep 2019 05:32:50 -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 S2392020AbfIFCtP (ORCPT + 99 others); Thu, 5 Sep 2019 22:49:15 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:6235 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2391203AbfIFCtP (ORCPT ); Thu, 5 Sep 2019 22:49:15 -0400 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 56F871731D68F0548963; Fri, 6 Sep 2019 10:49:13 +0800 (CST) Received: from [10.134.22.195] (10.134.22.195) by smtp.huawei.com (10.3.19.207) with Microsoft SMTP Server (TLS) id 14.3.439.0; Fri, 6 Sep 2019 10:49:09 +0800 Subject: Re: [f2fs-dev] [PATCH v2] f2fs: separate NOCoW and pinfile semantics From: Chao Yu To: Jaegeuk Kim CC: , References: <20190723023640.GC60778@jaegeuk-macbookpro.roam.corp.google.com> <20190729055738.GA95664@jaegeuk-macbookpro.roam.corp.google.com> <07cd3aba-3516-9ba5-286e-277abb98e244@huawei.com> <20190730180231.GB76478@jaegeuk-macbookpro.roam.corp.google.com> <00e70eb1-c4fa-a6c9-69d7-71ff995c7d6c@huawei.com> <20190801041435.GB84433@jaegeuk-macbookpro.roam.corp.google.com> <20190801222746.GA27597@jaegeuk-macbookpro.roam.corp.google.com> <5d566fce-4412-65b2-e9d9-279b648f7551@huawei.com> <20190806003749.GB98101@jaegeuk-macbookpro.roam.corp.google.com> Message-ID: <5c583e7c-bb69-4bfb-9ff8-29182973c359@huawei.com> Date: Fri, 6 Sep 2019 10:47:34 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="windows-1252" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.134.22.195] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2019/8/6 9:36, Chao Yu wrote: >>>> Now WAL mode were set by default in Android, so most of db file are -wal type now. >>> Will be back again tho. >> R? > Q. Jaegeuk, why we reuse persist mode in Q now? Thanks,