From patchwork Sat Jun 9 12:29:57 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ming Lei X-Patchwork-Id: 10455715 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 9BD2260467 for ; Sat, 9 Jun 2018 12:38:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8FE65206AC for ; Sat, 9 Jun 2018 12:38:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 83D96223A6; Sat, 9 Jun 2018 12:38:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4B038206AC for ; Sat, 9 Jun 2018 12:38:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753485AbeFIMdX (ORCPT ); Sat, 9 Jun 2018 08:33:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:38876 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753356AbeFIMdR (ORCPT ); Sat, 9 Jun 2018 08:33:17 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 41BC34022414; Sat, 9 Jun 2018 12:33:17 +0000 (UTC) Received: from localhost (ovpn-12-40.pek2.redhat.com [10.72.12.40]) by smtp.corp.redhat.com (Postfix) with ESMTP id CE90C422BA; Sat, 9 Jun 2018 12:33:06 +0000 (UTC) From: Ming Lei To: Jens Axboe , Christoph Hellwig , Alexander Viro , Kent Overstreet Cc: David Sterba , Huang Ying , linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Theodore Ts'o , "Darrick J . Wong" , Coly Li , Filipe Manana , Randy Dunlap , Ming Lei Subject: [PATCH V6 13/30] block: introduce rq_for_each_chunk() Date: Sat, 9 Jun 2018 20:29:57 +0800 Message-Id: <20180609123014.8861-14-ming.lei@redhat.com> In-Reply-To: <20180609123014.8861-1-ming.lei@redhat.com> References: <20180609123014.8861-1-ming.lei@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Sat, 09 Jun 2018 12:33:17 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Sat, 09 Jun 2018 12:33:17 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'ming.lei@redhat.com' RCPT:'' Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP There are still cases in which rq_for_each_chunk() is required, for example, loop. Signed-off-by: Ming Lei --- include/linux/blkdev.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index bca3a92eb55f..4eaba73c784a 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -941,6 +941,10 @@ struct req_iterator { __rq_for_each_bio(_iter.bio, _rq) \ bio_for_each_segment(bvl, _iter.bio, _iter.iter) +#define rq_for_each_chunk(bvl, _rq, _iter) \ + __rq_for_each_bio(_iter.bio, _rq) \ + bio_for_each_chunk(bvl, _iter.bio, _iter.iter) + #define rq_iter_last(bvec, _iter) \ (_iter.bio->bi_next == NULL && \ bio_iter_last(bvec, _iter.iter))