Re: [PATCH v1 1/4] block: bio: introduce helpers to get the 1st and last bvec

[Christoph Hellwig]

> +/*
> + * bio_get_last_bvec() is introduced to get the last bvec of one
> + * bio for bio_will_gap().
> + */

I don't think this comment adds any value.

Otherwise looks fine:

Reviewed-by: Christoph Hellwig <h...@lst.de>