Re: [RFC V4 2/6] blk-wbt: make wbt pluggable

[Christoph Hellwig]

> +struct rq_qos *wbt_rq_qos(struct request_queue *q);
>  int wbt_init(struct request_queue *);


Please move the wb_lat sysfs attribute into blk-wbt.c as well, which
removes the need to expose these two functions.