From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ming Lei Subject: [PATCH v2 06/51] f2fs: f2fs_read_end_io: comment on direct access to bvec table Date: Mon, 26 Jun 2017 20:09:49 +0800 Message-ID: <20170626121034.3051-7-ming.lei@redhat.com> References: <20170626121034.3051-1-ming.lei@redhat.com> Return-path: In-Reply-To: <20170626121034.3051-1-ming.lei@redhat.com> Sender: linux-block-owner@vger.kernel.org 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 List-Id: 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 7697d03e8a98..622c44a1be78 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