Re: [PATCHv2 2/3] block: introduce rq_list_move

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On Mon, Dec 27, 2021 at 08:41:37AM -0800, Keith Busch wrote:
> +/**
> + * rq_list_move() - move a struct request from one list to another
> + * @src: The source list @rq is currently in
> + * @dst: The destination list that @rq will be appended to
> + * @rq: The request to move
> + * @prv: The request preceding @rq in @src (NULL if @rq is the head)
> + * @nxt: The request following @rq in @src (NULL if @rq is the tail)
> + */
> +static void inline rq_list_move(struct request **src, struct request **dst,
> +				struct request *rq, struct request *prv,
> +				struct request *nxt)
> +{
> +	if (prv)
> +		prv->rq_next = nxt;
> +	else
> +		*src = nxt;
> +	rq_list_add(dst, rq);
> +}

Do we even need the nxt argument?  I think it should always be
rq->rq_next?

Also I'd spell out prev and next for a little more readability.



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