Received: by 2002:a25:1506:0:0:0:0:0 with SMTP id 6csp1519307ybv; Thu, 6 Feb 2020 05:35:42 -0800 (PST) X-Google-Smtp-Source: APXvYqxV3nuzbO8dQcTjjIE1Lm1Ip/DCoGcW8onGuvdiQwInY6XvJnrrUiYclEU7itv3cd+DOoL9 X-Received: by 2002:aca:2112:: with SMTP id 18mr6523814oiz.155.1580996142505; Thu, 06 Feb 2020 05:35:42 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1580996142; cv=none; d=google.com; s=arc-20160816; b=UDvaiGRFcCZb4D0E53Sbi3/pKZqeJfvOQS3KEf8O5Lj2PLIXeR+X8xm5MxIfbKJ65h mRedpQDP+StdSX/c79R4xt+UwodqAMNXjYbifKE4gWPCKqgy6W1DGoSYcExhbugwCkB/ E7c695+0ppRIOhl+3rvj2uSJgqHj4kQ1cmp9GnCqwdsf+Jc4FfkKytl0QZXl/3mSb0NS BngnKUsBPMdK8PGhi7QBjqpEuQeqnuLfbsaAksWFQ+Vys8ot1iF5U3+ic0g4qEqCq8Kz 1f5jH5S8yrKd67dJ/277vNQ7ar2RRAlV+9ov4/7+KA3aJUQNlqREqk6NHmwB0KC98a+l FR4g== 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:mime-version :user-agent:date:message-id:subject:from:cc:to; bh=2ADM1HtGSUwEZM/83lbx+T8AcyTFwsh4KLDvgxEOUws=; b=ujM3YFtW55CRIM6kYdhShLAZDEmygJy84+SyRpox42jD9U/LJ94vLp+S/z31R12FWU flNEe6wGHX5ZjtErn9NNxiqtR1UhfOzQTGaxH0ddVTDaI2VKabtlfrjnjJ+FejgDds7G lr+/cSPoAFmbmAT8rud1Tglmf47wfEVKh9GPHVysueSgJVP/VssIqWXI7ehfn/gZHEZ8 TQYLMvReTDK9sBL8o8G/3HNh1H1KGU/FiwG+h3fuwAaQAKBq7Jvz54Lrxv6swx48QmrY KVg6xzuDiVJp2+m3dTybp21J4ydwQGeYqQOjnX/YwUI+YUg5VnCgMieQJhBKsjEy83Wp OCcQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id l5si1827849otn.35.2020.02.06.05.35.22; Thu, 06 Feb 2020 05:35:42 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-ext4-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-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727484AbgBFN3Y (ORCPT + 99 others); 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