Drop 'size' argument from bio_endio and bi_end_io

As bi_end_io is only called once when the reqeust is complete,
the 'size' argument is now redundant.  Remove it.

Now there is no need for bio_endio to subtract the size completed
from bi_size.  So don't do that either.

While we are at it, change bi_end_io to return void.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 144071e..d09ff15 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -820,7 +820,7 @@
 				break;
 			}
 	}
-	bio_endio(bio, bio->bi_size, 0);
+	bio_endio(bio, 0);
 }
 
 static void do_write(struct mirror_set *ms, struct bio *bio)
@@ -900,7 +900,7 @@
 	 */
 	if (unlikely(ms->log_failure))
 		while ((bio = bio_list_pop(&sync)))
-			bio_endio(bio, bio->bi_size, -EIO);
+			bio_endio(bio, -EIO);
 	else while ((bio = bio_list_pop(&sync)))
 		do_write(ms, bio);