block: Split out bio_list_copy_data()
Found a bug (with ASAN) where we were passing a bio to bio_copy_data()
with bi_next not NULL, when it should have been - a driver had left
bi_next set to something after calling bio_endio().
Since the normal case is only copying single bios, split out
bio_list_copy_data() to avoid more bugs like this in the future.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 5a6ee95..98b175c 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -505,9 +505,10 @@ static inline void bio_flush_dcache_pages(struct bio *bi)
}
#endif
-extern void bio_copy_data_iter(struct bio *dst, struct bvec_iter dst_iter,
- struct bio *src, struct bvec_iter src_iter);
+extern void bio_copy_data_iter(struct bio *dst, struct bvec_iter *dst_iter,
+ struct bio *src, struct bvec_iter *src_iter);
extern void bio_copy_data(struct bio *dst, struct bio *src);
+extern void bio_list_copy_data(struct bio *dst, struct bio *src);
extern void bio_free_pages(struct bio *bio);
extern struct bio *bio_copy_user_iov(struct request_queue *,