[PATCH 0/2] don't use mapcount() to check large folio sharing

In madvise_cold_or_pageout_pte_range() and madvise_free_pte_range(), folio_mapcount() is used to check whether the folio is shared. But it's not correct as folio_mapcount() returns total mapcount of large folio.

Use folio_estimated_sharers() here as the estimated number is enough.

Yin Fengwei (2): madvise: don't use mapcount() against large folio for sharing check madvise: don't use mapcount() against large folio for sharing check

mm/huge_memory.c | 2 +- mm/madvise.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-)