RE: [PATCH v8 1/8] mm/memfd: Introduce userspace inaccessible memfd

[Wang, Wei W]

On Thursday, September 15, 2022 10:29 PM, Chao Peng wrote:
> +int inaccessible_get_pfn(struct file *file, pgoff_t offset, pfn_t *pfn,
> +			 int *order)

Better to remove "order" from this interface?
Some callers only need to get pfn, and no need to bother with
defining and inputting something unused. For callers who need the "order",
can easily get it via thp_order(pfn_to_page(pfn)) on their own.