Re: [PATCH 2/4] block: check virt boundary in bio_will_gap()

[Sagi Grimberg]

> diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
> index 4571ef1..b8ff6a3 100644
> --- a/include/linux/blkdev.h
> +++ b/include/linux/blkdev.h
> @@ -1388,7 +1388,7 @@ static inline bool bvec_gap_to_prev(struct request_queue *q,
>   static inline bool bio_will_gap(struct request_queue *q, struct bio *prev,
>   			 struct bio *next)
>   {
> -	if (!bio_has_data(prev))
> +	if (!bio_has_data(prev) || !queue_virt_boundary(q))
>   		return false;

Can we not do that?

bvec_gap_to_prev is already checking the virt_boundary and I'd sorta
like to keep the motivation to optimize bio_get_last_bvec() to be O(1).