Re: [RFC PATCH v2 11/32] iommu/pages: Add APIs to preserve/unpreserve/restore iommu pages

[Baolu Lu]

On 12/3/25 07:02, Samiullah Khawaja wrote:
> +int iommu_preserve_pages(struct iommu_pages_list *list)
> +{
> +	struct ioptdesc *iopt;
> +	int count = 0;
> +	int ret;
> +
> +	list_for_each_entry(iopt, &list->pages, iopt_freelist_elm) {
> +		ret = kho_preserve_folio(ioptdesc_folio(iopt));
> +		if (ret) {
> +			iommu_unpreserve_pages(list, count);
> +			return ret;
> +		}
> +
> +		++count;
> +	}
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL_GPL(iommu_preserve_pages);

What is the purpose of "count"?

Thanks,
baolu