Re: [PATCH 2/2] madvise: don't use mapcount() against large folio for sharing check

[Andrew Morton]

On Sat, 29 Jul 2023 00:13:56 +0800 Yin Fengwei <fengwei.yin@xxxxxxxxx> wrote:

> Fixes: 98b211d6415f ("madvise: convert madvise_free_pte_range() to use a folio")
> Fixes: fc986a38b670 ("mm: huge_memory: convert madvise_free_huge_pmd to use a folio")

Having two Fixes: for one patch presumably makes backporting more
complicated and adds risk of making mistakes.

So I have split this into a three-patch series and I've fixed up the patch naming:

Subject: madvise:madvise_cold_or_pageout_pte_range(): don't use mapcount() against large folio for sharing check
Subject: madvise:madvise_free_huge_pmd(): don't use mapcount() against large folio for sharing check
Subject: madvise:madvise_free_pte_range(): don't use mapcount() against large folio for sharing check

I haven't added cc:stable at this time - that awaits the description of
user-visible effects.