bio_iov_bvec_set clones the bio_vecs from the iter, and thus should be treated like a cloned bio in every respect. That also includes not touching bi_max_vecs as that is a property of the bio allocation and not its current payload. Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- block/bio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/bio.c b/block/bio.c index f753201238273b..a36f955cd120b0 100644 --- a/block/bio.c +++ b/block/bio.c @@ -937,11 +937,11 @@ static int bio_iov_bvec_set(struct bio *bio, struct iov_iter *iter) WARN_ON_ONCE(BVEC_POOL_IDX(bio) != 0); bio->bi_vcnt = iter->nr_segs; - bio->bi_max_vecs = iter->nr_segs; bio->bi_io_vec = (struct bio_vec *)iter->bvec; bio->bi_iter.bi_bvec_done = iter->iov_offset; bio->bi_iter.bi_size = iter->count; bio_set_flag(bio, BIO_NO_PAGE_REF); + bio_set_flag(bio, BIO_CLONED); iov_iter_advance(iter, iter->count); return 0; -- 2.29.2
