From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933311AbcCHLcm (ORCPT ); Tue, 8 Mar 2016 06:32:42 -0500 Received: from mail-pf0-f195.google.com ([209.85.192.195]:34463 "EHLO mail-pf0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933094AbcCHLab (ORCPT ); Tue, 8 Mar 2016 06:30:31 -0500 From: Ming Lei To: Jens Axboe , linux-kernel@vger.kernel.org Cc: linux-block@vger.kernel.org, Christoph Hellwig , Al Viro , Anton Altaparmakov , Ming Lei Subject: [PATCH 3/4] block: mark 1st parameter of bvec_iter_advance as const Date: Tue, 8 Mar 2016 19:29:45 +0800 Message-Id: <1457436586-26833-4-git-send-email-ming.lei@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1457436586-26833-1-git-send-email-ming.lei@canonical.com> References: <1457436586-26833-1-git-send-email-ming.lei@canonical.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org bvec_iter_advance() only writes to the parameter of 'iter', so address of 'bvec' can be marked as const safely. Without the change, we can trigger compiling warning in the following patch for implementing iterate_bvec(): lib/iov_iter.c with bvec iterator. Signed-off-by: Ming Lei --- include/linux/bvec_iter.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/bvec_iter.h b/include/linux/bvec_iter.h index 07c1ffc..2ad5271 100644 --- a/include/linux/bvec_iter.h +++ b/include/linux/bvec_iter.h @@ -49,7 +49,8 @@ .bv_offset = bvec_iter_offset((bvec), (iter)), \ }) -static inline void bvec_iter_advance(struct bio_vec *bv, struct bvec_iter *iter, +static inline void bvec_iter_advance(const struct bio_vec *bv, + struct bvec_iter *iter, unsigned bytes) { WARN_ONCE(bytes > iter->bi_size, -- 1.9.1