Messages in this thread | | | Date | Fri, 28 Jul 2023 10:24:05 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 0/2] don't use mapcount() to check large folio sharing |
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On Sat, 29 Jul 2023 00:13:54 +0800 Yin Fengwei <fengwei.yin@intel.com> wrote:
> 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.
What are the user-visible runtime effects of these changes?
(and please try to avoid using the same Subject: for different patches)
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