Received: by 2002:a25:1506:0:0:0:0:0 with SMTP id 6csp1604707ybv; Thu, 6 Feb 2020 06:50:35 -0800 (PST) X-Google-Smtp-Source: APXvYqyHikDjaIgCaDo6KnX9PH5wm2RPis2RKYm39v3Bvo4r0SaIZN3d+ff1EX8AGEkChmsgpxao X-Received: by 2002:a05:6808:1:: with SMTP id u1mr7276035oic.74.1581000635846; Thu, 06 Feb 2020 06:50:35 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1581000635; cv=none; d=google.com; s=arc-20160816; b=WluUgPpMOtmdHXrgCma+AR2GNvd5pi6b3Ju5M7PURupYsge+vq7F7yke0zHym8ewBr 82MKwUUrLulpF9vunwZmyl0QfFbV9UDDxVGb80QWg7ZDgYsc6fXWxh2TataoI6ZWW2CJ GzoWCXpc02Lk3Iy6zbYbMj8A+NGoAOybCeGMh0W3gp4ut4n90hXlA38VSUiOTaPJjamb k8cAX0mELT+KsUMzwrKqIGW+MIJMmJJ1msuQgqImmGuR9cfeJsVt49edLTVvpkJvrK7U PWjPJyHTFe+g7+X/e/6+AYHOaZF7mlkzNOYD55enPBXcUj+EO7fBYsUdz4QCj2aFYg1v /TFg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=/EmKZd2X8C9q7W19qJI1oiV8KBqlFLwuW5Hd59hvH8E=; b=aKP7j/uen8vqToJ9eEONnhSrooiUB0IrXr0IyhsFghbZKA3nchen0wsU4P+eAqZ0HS w0fxTH8F9NGdA6+U1c9YF29U3yKJ41irTT68/O2hi4W8lcWLh11cza0woDvTqQ7+vM6h ItA/s5ZNSP2kiohGI9zSMCmTvXxYnxDinK4QlzDywJIoYU+fqjPQvGtey3vgTKOV7/Wf b/KcW3J9SJeyz7ukZiptbqCKlN24cLSjGpQYnpnSAOqofDzVsc1Fn3rAicBoFXB6lwcV TFl2tH24eMLHcyMllsjFs9Jx7uBCtH6ADHZJn03rguDW2okk5LA53NAOHssJBhoIxQY5 CfbQ== 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id o16si1900968otp.289.2020.02.06.06.50.15; Thu, 06 Feb 2020 06:50:35 -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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726925AbgBFOsG (ORCPT + 99 others); Thu, 6 Feb 2020 09:48:06 -0500 Received: from mx2.suse.de ([195.135.220.15]:57094 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726744AbgBFOsG (ORCPT ); Thu, 6 Feb 2020 09:48:06 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 39944ADFF; Thu, 6 Feb 2020 14:48:05 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id 2AFFD1E0DEB; Thu, 6 Feb 2020 15:48:04 +0100 (CET) Date: Thu, 6 Feb 2020 15:48:04 +0100 From: Jan Kara To: Xiaoguang Wang Cc: Ext4 Developers List , Jan Kara , ted Subject: Re: ext4 support iopoll Message-ID: <20200206144804.GC26114@quack2.suse.cz> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Hello, On Thu 06-02-20 21:29:15, Xiaoguang Wang wrote: > 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. I'm not aware of any so feel free to submit a patch :) Honza -- Jan Kara SUSE Labs, CR