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SubjectRE: [PATCH v4 3/9] scsi: ufshpb: Add region's reads counter
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Hi Avri,

> +static void ufshpb_normalization_work_handler(struct work_struct *work)
> +{
> + struct ufshpb_lu *hpb;
> + int rgn_idx;
> +
> + hpb = container_of(work, struct ufshpb_lu, ufshpb_normalization_work);
> +
> + for (rgn_idx = 0; rgn_idx < hpb->rgns_per_lu; rgn_idx++) {
> + struct ufshpb_region *rgn = hpb->rgn_tbl + rgn_idx;

*HERE*
> + if (rgn->reads) {
> + unsigned long flags;
> +
> + spin_lock_irqsave(&rgn->rgn_lock, flags);

I thinks this lock should protect rgn->reads when it is accessed.

> + rgn->reads = (rgn->reads >> 1);
> + spin_unlock_irqrestore(&rgn->rgn_lock, flags);
> + }
*HERE*

> +
> + if (rgn->rgn_state != HPB_RGN_ACTIVE || rgn->reads)
> + continue;
> +
> + /* if region is active but has no reads - inactivate it */
> + spin_lock(&hpb->rsp_list_lock);
> + ufshpb_update_inactive_info(hpb, rgn->rgn_idx);
> + spin_unlock(&hpb->rsp_list_lock);
> + }
> +
> + clear_bit(WORK_PENDING, &hpb->work_data_bits);

Why we use work_data_bits? It may be checked by worker API.

Thanks,
Daejun

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