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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_1 autolearn=no 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 4FE3DC2D0B1 for ; Thu, 6 Feb 2020 13:29:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2CE64218AC for ; Thu, 6 Feb 2020 13:29:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727925AbgBFN3Y (ORCPT ); Thu, 6 Feb 2020 08:29:24 -0500 Received: from out30-130.freemail.mail.aliyun.com ([115.124.30.130]:47675 "EHLO out30-130.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726765AbgBFN3Y (ORCPT ); Thu, 6 Feb 2020 08:29:24 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R211e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01f04396;MF=xiaoguang.wang@linux.alibaba.com;NM=1;PH=DS;RN=3;SR=0;TI=SMTPD_---0TpHHK0W_1580995756; Received: from 30.13.184.134(mailfrom:xiaoguang.wang@linux.alibaba.com fp:SMTPD_---0TpHHK0W_1580995756) by smtp.aliyun-inc.com(127.0.0.1); Thu, 06 Feb 2020 21:29:17 +0800 To: Ext4 Developers List Cc: Jan Kara , ted From: Xiaoguang Wang Subject: ext4 support iopoll Message-ID: Date: Thu, 6 Feb 2020 21:29:15 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.3.1 MIME-Version: 1.0 Content-Type: text/plain; charset=gbk; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org hi, While testing iouring in ext4, we find ext4 does not support .iopoll yet, since commit "ext4: introduce direct I/O write using iomap infrastructure", seems that ext4 can support iopoll as well, just add a ".iopoll = iomap_dio_iopoll,". So I wonder is there any special reason that ext4 does not have have this iopoll interface? Thanks. Regards, Xiaoguang Wang