On 31/12/25 11:00AM, Ming Lei wrote:
>bio_iov_bvec_set() creates a cloned bio that borrows a bvec array from
>an iov_iter. For cloned bios, bi_vcnt is meaningless because iteration
>is controlled entirely by bi_iter (bi_idx, bi_size, bi_bvec_done), not
>by bi_vcnt. Remove the incorrect bi_vcnt assignment.
>
>Explicitly initialize bi_iter.bi_idx to 0 to ensure iteration starts
>at the first bvec. While bi_idx is typically already zero from bio
>initialization, making this explicit improves clarity and correctness.
>
>This change also avoids accessing iter->nr_segs, which is an iov_iter
>implementation detail that block code should not depend on.
>
>Signed-off-by: Ming Lei <ming.lei@redhat.com>
>---
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>