Re: [RFC PATCH 4/8] blk-iocost: dispatch cost calculation to registered BPF model

[Tejun Heo]

Hello, Tao.

On Tue, 08 Sep 2026 18:01:39 +0800, Tao Cui wrote:

> +             if (iocost_bpf_calc_cost(bio_op(bio),
> +                                      bio->bi_iter.bi_size,
> +                                      bio->bi_iter.bi_sector,
> +                                      iocg->cursor,
> +                                      iocg_to_blkg(iocg)->blkcg->css.id,
> +                                      is_merge ? IOCOST_COST_F_MERGE : 0,

bio_op() drops REQ_PREFLUSH and REQ_FUA, and the flags argument only carries
merge status. Please preserve the operation flags.

Thanks.

-- 
tejun