Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754766AbcDNLt6 (ORCPT ); Thu, 14 Apr 2016 07:49:58 -0400 Received: from mail-oi0-f67.google.com ([209.85.218.67]:33845 "EHLO mail-oi0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754063AbcDNLsQ (ORCPT ); Thu, 14 Apr 2016 07:48:16 -0400 From: Ming Lei To: Jens Axboe , linux-kernel@vger.kernel.org Cc: linux-block@vger.kernel.org, Christoph Hellwig , Al Viro , Ming Lei Subject: [PATCH v4 3/8] block: mark 1st parameter of bvec_iter_advance as const Date: Thu, 14 Apr 2016 19:46:56 +0800 Message-Id: <1460634438-26530-4-git-send-email-ming.lei@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1460634438-26530-1-git-send-email-ming.lei@canonical.com> References: <1460634438-26530-1-git-send-email-ming.lei@canonical.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 925 Lines: 29 bvec_iter_advance() only writes the parameter of iterator, so the base address of bvec can be marked as const safely. Without the change, we can see compiling warning in the following patch for implementing iterate_bvec(): lib/iov_iter.c with bvec iterator. Reviewed-by: Christoph Hellwig Signed-off-by: Ming Lei --- include/linux/bvec.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/bvec.h b/include/linux/bvec.h index 096efd2..701b64a 100644 --- a/include/linux/bvec.h +++ b/include/linux/bvec.h @@ -66,7 +66,8 @@ struct bvec_iter { .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