From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-f197.google.com (mail-qt0-f197.google.com [209.85.216.197]) by kanga.kvack.org (Postfix) with ESMTP id E883B6B02FA for ; Tue, 8 Aug 2017 04:47:15 -0400 (EDT) Received: by mail-qt0-f197.google.com with SMTP id t37so12593562qtg.6 for ; Tue, 08 Aug 2017 01:47:15 -0700 (PDT) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id t125si760474qkb.288.2017.08.08.01.47.15 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 08 Aug 2017 01:47:15 -0700 (PDT) From: Ming Lei Subject: [PATCH v3 06/49] f2fs: f2fs_read_end_io: comment on direct access to bvec table Date: Tue, 8 Aug 2017 16:45:05 +0800 Message-Id: <20170808084548.18963-7-ming.lei@redhat.com> In-Reply-To: <20170808084548.18963-1-ming.lei@redhat.com> References: <20170808084548.18963-1-ming.lei@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: 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 , Jaegeuk Kim , Chao Yu , linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim Cc: Chao Yu Cc: linux-f2fs-devel@lists.sourceforge.net Signed-off-by: Ming Lei --- fs/f2fs/data.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 87c1f4150c64..99fa8e9780e8 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -56,6 +56,10 @@ static void f2fs_read_end_io(struct bio *bio) int i; #ifdef CONFIG_F2FS_FAULT_INJECTION + /* + * It is still safe to retrieve the 1st page of the bio + * in this way after supporting multipage bvec. + */ if (time_to_inject(F2FS_P_SB(bio->bi_io_vec->bv_page), FAULT_IO)) { f2fs_show_injection_info(FAULT_IO); bio->bi_status = BLK_STS_IOERR; -- 2.9.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org