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From:   Yin Fengwei <fengwei.yin@intel.com>
To:     linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        stable@vger.kernel.org, akpm@linux-foundation.org,
        willy@infradead.org, vishal.moola@gmail.com,
        wangkefeng.wang@huawei.com, minchan@kernel.org, yuzhao@google.com,
        david@redhat.com, ryan.roberts@arm.com, shy828301@gmail.com
Cc:     fengwei.yin@intel.com
Subject: [PATCH 0/2] don't use mapcount() to check large folio sharing
Date:   Sat, 29 Jul 2023 00:13:54 +0800
Message-Id: <20230728161356.1784568-1-fengwei.yin@intel.com>
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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(-)

-- 
2.39.2