From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754275AbcL0P74 (ORCPT ); Tue, 27 Dec 2016 10:59:56 -0500 Received: from mail-pf0-f193.google.com ([209.85.192.193]:32860 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751294AbcL0P7v (ORCPT ); Tue, 27 Dec 2016 10:59:51 -0500 From: Ming Lei To: Jens Axboe , linux-kernel@vger.kernel.org Cc: linux-block@vger.kernel.org, Christoph Hellwig , Ming Lei , Andrew Morton , Mike Christie , Michal Hocko , Minchan Kim , Joe Perches , "Kirill A. Shutemov" , linux-mm@kvack.org (open list:MEMORY MANAGEMENT) Subject: [PATCH v1 04/54] mm: page_io.c: comment on direct access to bvec table Date: Tue, 27 Dec 2016 23:55:53 +0800 Message-Id: <1482854250-13481-5-git-send-email-tom.leiming@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1482854250-13481-1-git-send-email-tom.leiming@gmail.com> References: <1482854250-13481-1-git-send-email-tom.leiming@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Ming Lei --- mm/page_io.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/page_io.c b/mm/page_io.c index 23f6d0d3470f..368a16aa810c 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) { @@ -116,6 +117,7 @@ static void swap_slot_free_notify(struct page *page) static void end_swap_bio_read(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