Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755463AbcL0QFh (ORCPT ); Tue, 27 Dec 2016 11:05:37 -0500 Received: from mail-pg0-f67.google.com ([74.125.83.67]:35500 "EHLO mail-pg0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753224AbcL0QFa (ORCPT ); Tue, 27 Dec 2016 11:05:30 -0500 From: Ming Lei To: Jens Axboe , linux-kernel@vger.kernel.org Cc: linux-block@vger.kernel.org, Christoph Hellwig , Ming Lei , Johannes Berg Subject: [PATCH v1 32/54] block: introduce bvec_get_last_sp() Date: Wed, 28 Dec 2016 00:04:41 +0800 Message-Id: <1482854706-14128-1-git-send-email-tom.leiming@gmail.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 862 Lines: 29 BTRFS need to get the last singlepage bvec, so introduce this helper to make it happy. Signed-off-by: Ming Lei --- include/linux/bvec.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/bvec.h b/include/linux/bvec.h index baf379d56106..e9a623067c52 100644 --- a/include/linux/bvec.h +++ b/include/linux/bvec.h @@ -206,4 +206,14 @@ static inline void bvec_iter_advance_mp(const struct bio_vec *bv, #define bvec_for_each_sp_bvec(sp_bvl, mp_bvec, iter) \ __bvec_for_each_sp_bvec(sp_bvl, mp_bvec, iter, BVEC_ITER_ALL_INIT) +/* get the last singlepage bvec from the multipage bvec */ +static inline void bvec_get_last_sp(struct bio_vec *mp_bv, + struct bio_vec *sp_bv) +{ + struct bvec_iter iter; + + bvec_for_each_sp_bvec(*sp_bv, mp_bv, iter) + ; +} + #endif /* __LINUX_BVEC_ITER_H */ -- 2.7.4