On 7/3/2023 3:51 AM, Zi Yan wrote: >> (3) Mapcount of first (or any other) subpage (compount+subpage): for >> folio_estimated_sharers(). > This is another estimation. I wonder if we can use a different estimation > like total_mapcount() > folio_nr_pages() instead. Considering the partial folio mapping, I suppose we should use total_mapcount() > folio->_nr_pages_mapped as folio_estimated_sharers(). Regards Yin, Fengwei
