block: move bio_list_copy_data to pktcdvd

bio_list_copy_data is only used by pktcdvd, so move it there.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210412134658.2623190-2-hch@lst.de
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 0 insertions, 37 deletions

diff --git a/block/bio.c b/block/bio.c
index 0fecb80872c2..303298996afe 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1221,43 +1221,6 @@ void bio_copy_data(struct bio *dst, struct bio *src)
 }
 EXPORT_SYMBOL(bio_copy_data);
 
-/**
- * bio_list_copy_data - copy contents of data buffers from one chain of bios to
- * another
- * @src: source bio list
- * @dst: destination bio list
- *
- * Stops when it reaches the end of either the @src list or @dst list - that is,
- * copies min(src->bi_size, dst->bi_size) bytes (or the equivalent for lists of
- * bios).
- */
-void bio_list_copy_data(struct bio *dst, struct bio *src)
-{
-	struct bvec_iter src_iter = src->bi_iter;
-	struct bvec_iter dst_iter = dst->bi_iter;
-
-	while (1) {
-		if (!src_iter.bi_size) {
-			src = src->bi_next;
-			if (!src)
-				break;
-
-			src_iter = src->bi_iter;
-		}
-
-		if (!dst_iter.bi_size) {
-			dst = dst->bi_next;
-			if (!dst)
-				break;
-
-			dst_iter = dst->bi_iter;
-		}
-
-		bio_copy_data_iter(dst, &dst_iter, src, &src_iter);
-	}
-}
-EXPORT_SYMBOL(bio_list_copy_data);
-
 void bio_free_pages(struct bio *bio)
 {
 	struct bio_vec *bvec;