block/fs/drivers: remove rw argument from submit_bio

This has callers of submit_bio/submit_bio_wait set the bio->bi_rw
instead of passing it in. This makes that use the same as
generic_make_request and how we set the other bio fields.

Signed-off-by: Mike Christie <mchristi@redhat.com>

Fixed up fs/ext4/crypto.c

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 9a8bbc1..c595c8f 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -102,7 +102,8 @@
 {
 	if (!is_read_io(rw))
 		atomic_inc(&sbi->nr_wb_bios);
-	submit_bio(rw, bio);
+	bio->bi_rw = rw;
+	submit_bio(bio);
 }
 
 static void __submit_merged_bio(struct f2fs_bio_info *io)
@@ -1080,6 +1081,7 @@
 			bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(block_nr);
 			bio->bi_end_io = f2fs_read_end_io;
 			bio->bi_private = ctx;
+			bio->bi_rw = READ;
 		}
 
 		if (bio_add_page(bio, page, blocksize, 0) < blocksize)