[PATCH v2 06/51] f2fs: f2fs_read_end_io: comment on direct access to bvec table

Ming Lei
2017-06-26T12:13:40Z

Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Chao Yu <yuchao0@huawei.com>
Cc: linux-f2fs-devel@lists.sourceforge.net
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
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