Re: [PATCH RFC 00/19] mm/gup: remove FOLL_FORCE usage from drivers (reliable R/O long-term pinning)
From: Linus Torvalds
Date: Mon Nov 07 2022 - 12:33:17 EST
On Mon, Nov 7, 2022 at 8:18 AM David Hildenbrand <david@xxxxxxxxxx> wrote:
>
> So instead, make R/O long-term pinning work as expected, by breaking COW
> in a COW mapping early, such that we can remove any FOLL_FORCE usage from
> drivers.
Nothing makes me unhappy from a quick scan through these patches.
And I'd really love to just have this long saga ended, and FOLL_FORCE
finally relegated to purely ptrace accesses.
So an enthusiastic Ack from me.
Linus