Received: by 2002:a25:1985:0:0:0:0:0 with SMTP id 127csp993682ybz; Thu, 16 Apr 2020 00:20:32 -0700 (PDT) X-Google-Smtp-Source: APiQypLtLaGiwjvwL9ugdlci+9LHxm3Hz2w/KQYet32vafYjcOnJjbouvTI3WWzosYIQtRoCodGq X-Received: by 2002:a17:906:30d9:: with SMTP id b25mr8752334ejb.168.1587021632019; Thu, 16 Apr 2020 00:20:32 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1587021632; cv=none; d=google.com; s=arc-20160816; b=A/7S30y//rR+nMn0cAFUXDFl3FtrgJAiRKrW1nFl7MyMeNkQUuue0xqVllK3p6obWi 8CO/E/kzj2SNKAPaYr/ErYKao437waoHXBfPdVnUoy9oKf4jP/pBlJzroJiux+5E7YCT bO1fJ5HuuzjUu4fiIXa8RSO53NgzE0ScCSsmUUa+ngqWxhLu9fktocHlq9uU1pxrkrPq lLT+ngqZpk+rBlFt1gH06AGMtdiz94aNCLuSoPSH9xkMhlcGSQmfhIvhFr/Bvcuu4F6n yGN2yQ+uMnwnr4XDh1uzSVTp+OOfKOdwbOg1LAuNWIU0Q5noniF47Zdwpkw2/orSBXpX w7+A== 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:from:references:to:subject; bh=QwoCEbVn0yTBkno9HBt8YxawETP2KgD9911y0H1QGwo=; b=XPpQM7FP7fZjyur2fmrHXbjo1csMaPXOKizRulT2Jq7MXaOGTvbOY5ck5m2tgovzl8 fQV+vvsyRczYKo0SftKpZ93rz75l5VMwuFllwsj27RgI1IPwxb1+5PnAtJPjRcB7Bfwx klmA7GVbyw26jUuWZ00kWd8w9Tt24vFJMH01TfZt8E0fpdgHl9m8tqGR20JXUOeXOA1l 9D4Iu85fJwzdSMPMg4x5y/33tJjplA3wi0FZqJSqeMH+jkqK/d5m2n1ixCBOFdgTWOGF 8fA8WGoC7msgib8dRoia1PL3/aFF9p0spxr5bVEei4ujEM93QStHXiJdVVbUpvB+9tdi woYg== ARC-Authentication-Results: i=1; mx.google.com; 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id g17si6275498ejm.271.2020.04.16.00.20.09; Thu, 16 Apr 2020 00:20:32 -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; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2438657AbgDPHTD (ORCPT + 99 others); Thu, 16 Apr 2020 03:19:03 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:2339 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2438104AbgDPHSz (ORCPT ); Thu, 16 Apr 2020 03:18:55 -0400 Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id A6DA45EE4167EB0AB608; Thu, 16 Apr 2020 15:18:53 +0800 (CST) Received: from [10.134.22.195] (10.134.22.195) by smtp.huawei.com (10.3.19.202) with Microsoft SMTP Server (TLS) id 14.3.487.0; Thu, 16 Apr 2020 15:18:49 +0800 Subject: Re: [f2fs-dev] [PATCH] f2fs: introduce sysfs/data_io_flag to attach REQ_META/FUA To: Jaegeuk Kim , , , References: <20200403161249.68385-1-jaegeuk@kernel.org> From: Chao Yu Message-ID: Date: Thu, 16 Apr 2020 15:18:48 +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: <20200403161249.68385-1-jaegeuk@kernel.org> 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 2020/4/4 0:12, Jaegeuk Kim wrote: > This patch introduces a way to attach REQ_META/FUA explicitly > to all the data writes given temperature. > > -> attach REQ_FUA to Hot Data writes > > -> attach REQ_FUA to Hot|Warm Data writes > > -> attach REQ_FUA to Hot|Warm|Cold Data writes > > -> attach REQ_FUA to Hot|Warm|Cold Data writes as well as > REQ_META to Hot Data writes > > Signed-off-by: Jaegeuk Kim Reviewed-by: Chao Yu Thanks,