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=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 A332EC4361B for ; Mon, 7 Dec 2020 07:56:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 558F522582 for ; Mon, 7 Dec 2020 07:56:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726098AbgLGH4P (ORCPT ); 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,