From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f200.google.com (mail-qk0-f200.google.com [209.85.220.200]) by kanga.kvack.org (Postfix) with ESMTP id 4D9776B0279 for ; Sat, 9 Jun 2018 08:33:18 -0400 (EDT) Received: by mail-qk0-f200.google.com with SMTP id u127-v6so15538844qka.9 for ; Sat, 09 Jun 2018 05:33:18 -0700 (PDT) Received: from mx1.redhat.com (mx3-rdu2.redhat.com. [66.187.233.73]) by mx.google.com with ESMTPS id q18-v6si5657412qtg.274.2018.06.09.05.33.17 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 09 Jun 2018 05:33:17 -0700 (PDT) From: 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> Sender: owner-linux-mm@kvack.org List-ID: 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 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)) -- 2.9.5