From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:32206 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752026AbdFZMMj (ORCPT ); Mon, 26 Jun 2017 08:12:39 -0400 From: Ming Lei To: Jens Axboe , Christoph Hellwig , Huang Ying , Andrew Morton , Alexander Viro Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Ming Lei Subject: [PATCH v2 04/51] mm: page_io.c: comment on direct access to bvec table Date: Mon, 26 Jun 2017 20:09:47 +0800 Message-Id: <20170626121034.3051-5-ming.lei@redhat.com> In-Reply-To: <20170626121034.3051-1-ming.lei@redhat.com> References: <20170626121034.3051-1-ming.lei@redhat.com> Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org Cc: Andrew Morton Cc: linux-mm@kvack.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 b6c4ac388209..11c6f4a9a25b 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_status) { @@ -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; struct task_struct *waiter = bio->bi_private; -- 2.9.4