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=-11.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 05582C48BE5 for ; Wed, 23 Jun 2021 07:41:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E60B26128A for ; Wed, 23 Jun 2021 07:41:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229864AbhFWHn7 (ORCPT ); Wed, 23 Jun 2021 03:43:59 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:30894 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230001AbhFWHn6 (ORCPT ); Wed, 23 Jun 2021 03:43:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1624434101; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=yYDv1ve1pPCO/wVpdHIv+/+bdGzxC/0la2+de0MywqU=; b=Plxu563rZOrSaBbGlX1wJe/aPl6AB9I8LEluPsQCC5egHTCa3yOBAPyqruWyXlc78OZ0Yw znzDXtdX/2q1fotQQ3IiZCzgXN12isGjgphsitjpnrMQhFLN3x/VXMgDTOcU9Bc5t8fDzT ptM/FRMBHjTsQXhvT1azU9BvrU+aYyk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-418-OJGCqLoKO3-AR_jo8QcZyg-1; Wed, 23 Jun 2021 03:40:59 -0400 X-MC-Unique: OJGCqLoKO3-AR_jo8QcZyg-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7A52F100CF71; Wed, 23 Jun 2021 07:40:58 +0000 (UTC) Received: from localhost (ovpn-12-52.pek2.redhat.com [10.72.12.52]) by smtp.corp.redhat.com (Postfix) with ESMTP id C58375D6D1; Wed, 23 Jun 2021 07:40:46 +0000 (UTC) From: Ming Lei To: Jens Axboe , Mike Snitzer Cc: linux-block@vger.kernel.org, Jeffle Xu , dm-devel@redhat.com, Hannes Reinecke , Christoph Hellwig , Ming Lei Subject: [PATCH V3 0/3] block/dm: support bio polling Date: Wed, 23 Jun 2021 15:40:29 +0800 Message-Id: <20210623074032.1484665-1-ming.lei@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Hello Guys, Based on Christoph's bio based polling model[1], implement DM bio polling with one very simple approach. Patch 1 adds helper of blk_queue_poll(). Patch 2 adds .bio_poll() callback to block_device_operations, so bio driver can implement its own logic for io polling. Patch 3 implements bio polling for device mapper. V3: - patch style change as suggested by Christoph(2/3) - fix kernel panic issue caused by nested dm polling, which is found & figured out by Jeffle Xu (3/3) - re-organize setup polling code (3/3) - remove RFC V2: - drop patch to add new fields into bio - support io polling for dm native bio splitting - add comment Ming Lei (3): block: add helper of blk_queue_poll block: add ->poll_bio to block_device_operations dm: support bio polling block/blk-core.c | 18 +++--- block/blk-sysfs.c | 4 +- block/genhd.c | 2 + drivers/md/dm-table.c | 24 +++++++ drivers/md/dm.c | 131 ++++++++++++++++++++++++++++++++++++++- drivers/nvme/host/core.c | 2 +- include/linux/blkdev.h | 2 + 7 files changed, 170 insertions(+), 13 deletions(-) -- 2.31.1