Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755044AbcJ2IOJ (ORCPT ); Sat, 29 Oct 2016 04:14:09 -0400 Received: from mail-pf0-f196.google.com ([209.85.192.196]:35725 "EHLO mail-pf0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S941455AbcJ2INP (ORCPT ); Sat, 29 Oct 2016 04:13:15 -0400 From: Ming Lei To: Jens Axboe , linux-kernel@vger.kernel.org Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Christoph Hellwig , "Kirill A . Shutemov" , Ming Lei , Andrew Morton , Michal Hocko , Minchan Kim , Mike Christie , Santosh Shilimkar , Joe Perches , linux-mm@kvack.org (open list:MEMORY MANAGEMENT) Subject: [PATCH 18/60] mm: page_io.c: comment on direct access to bvec table Date: Sat, 29 Oct 2016 16:08:17 +0800 Message-Id: <1477728600-12938-19-git-send-email-tom.leiming@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1477728600-12938-1-git-send-email-tom.leiming@gmail.com> References: <1477728600-12938-1-git-send-email-tom.leiming@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 471 Lines: 19 Signed-off-by: Ming Lei --- mm/page_io.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/page_io.c b/mm/page_io.c index a2651f58c86a..b0c0069ec1f4 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -43,6 +43,7 @@ static struct bio *get_swap_bio(gfp_t gfp_flags, void end_swap_bio_write(struct bio *bio) { + /* single page bio, safe for multipage bvec */ struct page *page = bio->bi_io_vec[0].bv_page; if (bio->bi_error) { -- 2.7.4