Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp2213513pxu; Sun, 6 Dec 2020 23:57:58 -0800 (PST) X-Google-Smtp-Source: ABdhPJzA7UOSlLQNFBoFtVEFoTxqOrUtywUdkp69kvQwPRTdu09fyF/IdS4ry0jIevtc1bhZBW0/ X-Received: by 2002:a17:906:6414:: with SMTP id d20mr18050380ejm.82.1607327878215; Sun, 06 Dec 2020 23:57:58 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1607327878; cv=none; d=google.com; s=arc-20160816; b=s34lZZ/WBblpPcob4Jsy7BMpTmDKLP13lI4cr/aFSE9SYOuMC7mppB1qobx/2huowj YXY5phx/T1iWycKfC8poV16V1zDvAEMWsok6jEwTSTAgEYIEZJ5wei+mZQw1xm53x3rN BZ0dJzstDK1AYFK6hsh7RG+SRRe9jBeAu00fgmqery6qi69ULK3QIChSVjfXDAmtDc6L tUN+Hkmd9+FW11eb/CPtutfUuuWPcx9fZYQlVIZlwuh4BD8D171X7ef+u47CgEfApys5 jO//t1Z3tA5aU5k0fGZz6P1i5v6Pov/euYIzMSvCELyGBvO2Hny0+lYYv1I4U5LyMD29 EYkw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :in-reply-to:mime-version:user-agent:date:message-id:from:references :to:subject; bh=2V+/UuTNPt8nMUiAjAtPOfcW/IIpRBN2Wnh50cNwUlE=; b=eUywDqvqkDDomsY6DDebWFpTOelB7o4Hsf+3eSKjA/lbxeYeIE4r5sh62x9+iwpuzf A6sd8yfVAz8TLUG6pwMnanF74WTCCiLh6D50cHwtpKQjzlUnffVNG5+WP2iDymAids24 qwKNqXUR+N+jTkVfup8Eu+swAX29cpAdlmbjn6ObqweP5EhJqC2GCr8MflV4VTxRp1kS AOiHCRslCHR07Hu5/VzWaVv8atSjkR7PkgQjg4G+KINhRXra9flvAZDhchoMXywOeCQC LzMfAIE87Gs4H4E3fBoyos5BsCc5yFgWZ2xotNGS5F8ZLt73X5eLeke8O9yvUhF50Hcq EoVA== 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 qn10si5942745ejb.591.2020.12.06.23.57.36; Sun, 06 Dec 2020 23:57:58 -0800 (PST) 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 S1726057AbgLGH4P (ORCPT + 99 others); Mon, 7 Dec 2020 02:56:15 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:8710 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725832AbgLGH4O (ORCPT ); Mon, 7 Dec 2020 02:56:14 -0500 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4CqFvx1bcYzkmS2; Mon, 7 Dec 2020 15:54:53 +0800 (CST) Received: from [10.136.114.67] (10.136.114.67) by smtp.huawei.com (10.3.19.205) with Microsoft SMTP Server (TLS) id 14.3.487.0; Mon, 7 Dec 2020 15:55:31 +0800 Subject: Re: [f2fs-dev] [PATCH 2/2] f2fs: introduce max_io_bytes, a sysfs entry, to limit bio size To: Jaegeuk Kim , , , References: <20201203205522.891082-1-jaegeuk@kernel.org> <20201203205522.891082-2-jaegeuk@kernel.org> From: Chao Yu Message-ID: <7c32e34a-1c16-1cdb-0930-3f144db46858@huawei.com> Date: Mon, 7 Dec 2020 15:55:30 +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: <20201203205522.891082-2-jaegeuk@kernel.org> 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 2020/12/4 4:55, Jaegeuk Kim wrote: > This patch adds max_io_bytes to limit bio size when f2fs tries to merge > consecutive IOs. This can give a testing point to split out bios and check > end_io handles those bios correctly. This is used to capture a recent bug > on the decompression and fsverity flow. > > Signed-off-by: Jaegeuk Kim Reviewed-by: Chao Yu Thanks,