dm: fold __send_duplicate_bios into __clone_and_map_simple_bio

Fold __send_duplicate_bios into its only caller to prepare for
refactoring.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NMike Snitzer <snitzer@redhat.com>
Link: https://lore.kernel.org/r/20220202160109.108149-5-hch@lst.deSigned-off-by: NJens Axboe <axboe@kernel.dk>

drivers/md/dm.c

@@ -1273,29 +1273,24 @@ static void alloc_multiple_bios(struct bio_list *blist, struct clone_info *ci,
 	}
 }
 
-static void __clone_and_map_simple_bio(struct clone_info *ci,
-					   struct dm_target_io *tio, unsigned *len)
-{
-	struct bio *clone = &tio->clone;
-
-	tio->len_ptr = len;
-
-	__bio_clone_fast(clone, ci->bio);
-	if (len)
-		bio_setup_sector(clone, ci->sector, *len);
-	__map_bio(tio);
-}
-
 static void __send_duplicate_bios(struct clone_info *ci, struct dm_target *ti,
 				  unsigned num_bios, unsigned *len)
 {
 	struct bio_list blist = BIO_EMPTY_LIST;
-	struct bio *bio;
+	struct bio *clone;
 
 	alloc_multiple_bios(&blist, ci, ti, num_bios);
 
-	while ((bio = bio_list_pop(&blist)))
-		__clone_and_map_simple_bio(ci, clone_to_tio(bio), len);
+	while ((clone = bio_list_pop(&blist))) {
+		struct dm_target_io *tio = clone_to_tio(clone);
+
+		tio->len_ptr = len;
+
+		__bio_clone_fast(clone, ci->bio);
+		if (len)
+			bio_setup_sector(clone, ci->sector, *len);
+		__map_bio(tio);
+	}
 }
 
 static int __send_empty_flush(struct clone_info *ci)