Re: [PATCH] mm/filemap: stop fault-around when the walk steps back

[Jose Fernandez]

On Thu, Oct 29, 2026 David Hildenbrand (Arm) wrote:
> Only read or also write? I assume only read.

Both. KASAN only reports the read, but once vmf->pte has stepped
outside the page table the loop will also call set_pte_range() on
that slot if it reads as pte_none(), so a stray write is possible
too. I'll call that out in the v2 changelog.

> Sounds like we want a Fixes: tag and Cc: stable? :)

Yes, v2 will carry both.

- Jose