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=-15.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, 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 20EBEC433E0 for ; Tue, 30 Mar 2021 06:41:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E26DC6198A for ; Tue, 30 Mar 2021 06:41:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230515AbhC3GlT (ORCPT ); Tue, 30 Mar 2021 02:41:19 -0400 Received: from mx2.suse.de ([195.135.220.15]:57520 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230416AbhC3GlA (ORCPT ); Tue, 30 Mar 2021 02:41:00 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id DBBC5B1BD; Tue, 30 Mar 2021 06:40:59 +0000 (UTC) Subject: Re: [PATCH V4 12/12] dm: support IO polling for bio-based dm device To: Ming Lei , Jens Axboe Cc: linux-block@vger.kernel.org, Jeffle Xu , Mike Snitzer , dm-devel@redhat.com References: <20210329152622.173035-1-ming.lei@redhat.com> <20210329152622.173035-13-ming.lei@redhat.com> From: Hannes Reinecke Message-ID: Date: Tue, 30 Mar 2021 08:40:58 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: <20210329152622.173035-13-ming.lei@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 3/29/21 5:26 PM, Ming Lei wrote: > From: Jeffle Xu > > IO polling is enabled when all underlying target devices are capable > of IO polling. The sanity check supports the stacked device model, in > which one dm device may be build upon another dm device. In this case, > the mapped device will check if the underlying dm target device > supports IO polling. > > Reviewed-by: Mike Snitzer > Signed-off-by: Jeffle Xu > Signed-off-by: Ming Lei > --- > drivers/md/dm-table.c | 24 ++++++++++++++++++++++++ > drivers/md/dm.c | 14 ++++++++++++++ > include/linux/device-mapper.h | 1 + > 3 files changed, 39 insertions(+) > Reviewed-by: Hannes Reinecke Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer