Re: [PATCH v4 2/2] mm: prevent gup_fast from racing with COW during fork

[Ahmed S. Darwish]

On Tue, Nov 10, 2020 at 07:44:09PM -0400, Jason Gunthorpe wrote:
...
>
> Fixes: f3c64eda3e50 ("mm: avoid early COW write protect games during fork()")
> Suggested-by: Linus Torvalds <torva...@linux-foundation.org>
> Link: 
> https://lore.kernel.org/r/CAHk-=wi=icnycarbpgjkvju9eyyez13n64tzyldob8cp5q_...@mail.gmail.com
> Reviewed-by: John Hubbard <jhubb...@nvidia.com>
> Reviewed-by: Jan Kara <j...@suse.cz>
> Signed-off-by: Jason Gunthorpe <j...@nvidia.com>
> ---

Thanks for the v3 and v4 updates.

For the seqcount_t parts:

  Acked-by: "Ahmed S. Darwish" <a.darw...@linutronix.de>