From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935184AbeEYDtY (ORCPT ); Thu, 24 May 2018 23:49:24 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:37994 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S934623AbeEYDtW (ORCPT ); Thu, 24 May 2018 23:49:22 -0400 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 , Ming Lei Subject: [RESEND PATCH V5 13/33] block: introduce rq_for_each_segment() Date: Fri, 25 May 2018 11:46:01 +0800 Message-Id: <20180525034621.31147-14-ming.lei@redhat.com> In-Reply-To: <20180525034621.31147-1-ming.lei@redhat.com> References: <20180525034621.31147-1-ming.lei@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There are still cases in which rq_for_each_segment() 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 1e8e9b430008..0b15bc625bd7 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -953,6 +953,10 @@ struct req_iterator { __rq_for_each_bio(_iter.bio, _rq) \ bio_for_each_page(bvl, _iter.bio, _iter.iter) +#define rq_for_each_segment(bvl, _rq, _iter) \ + __rq_for_each_bio(_iter.bio, _rq) \ + bio_for_each_segment(bvl, _iter.bio, _iter.iter) + #define rq_iter_last(bvec, _iter) \ (_iter.bio->bi_next == NULL && \ bio_iter_last(bvec, _iter.iter)) -- 2.9.5