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qJhoTbsS0MLJnONB/sjnC1EmYbgt8XR4j0ILvsozcafSF+fAMC1o+rf5IcVSQQf1njs2V4ieHEITKLjB4pKifSeUyCa+IIp9lHI8AqSqVI34yS3SxkUo2w1NM+BywUs3xIXr9hP9vzn0HlWh3z1z94lbvMpm2TztfR9OG7wGD0tHabRIfw+aoal9RpgfBMzfF+ZExAZVprT/zyN/BjD4mvgNQylCxzLoDz2/AxhbgAerAEN27JRdxTPimAzqiW8u6TtZRzlhz6JeF31ix6RefDvAmUvN1Xs+asx3skEhFtgcP/ILVC5yRPS8+R/khLvoJHsAwjjjMs1/rHEgSuQonFkvTXBoOsFRnB7ip X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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