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>

fs/gfs2/lops.c

@@ -240,7 +240,8 @@ void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw)
 {
 	if (sdp->sd_log_bio) {
 		atomic_inc(&sdp->sd_log_in_flight);
-		submit_bio(rw, sdp->sd_log_bio);
+		sdp->sd_log_bio->bi_rw = rw;
+		submit_bio(sdp->sd_log_bio);
 		sdp->sd_log_bio = NULL;
 	}
 }

fs/gfs2/meta_io.c

@@ -230,7 +230,8 @@ static void gfs2_submit_bhs(int rw, struct buffer_head *bhs[], int num)
 		bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
 	}
 	bio->bi_end_io = gfs2_meta_read_endio;
-	submit_bio(rw, bio);
+	bio->bi_rw = rw;
+	submit_bio(bio);
 }
 
 /**

fs/gfs2/ops_fstype.c

@@ -246,7 +246,8 @@ static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent)
 
 	bio->bi_end_io = end_bio_io_page;
 	bio->bi_private = page;
-	submit_bio(READ_SYNC | REQ_META, bio);
+	bio->bi_rw = READ_SYNC | REQ_META;
+	submit_bio(bio);
 	wait_on_page_locked(page);
 	bio_put(bio);
 	if (!PageUptodate(page)) {