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

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On Thu, Nov 12, 2020 at 08:41:58AM +0100, Ahmed S. Darwish wrote:
> 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 <torvalds@xxxxxxxxxxxxxxxxxxxx>
> > Link: https://lore.kernel.org/r/CAHk-=wi=iCnYCARbPGjkVJu9eyYeZ13N64tZYLdOB8CP5Q_PLw@xxxxxxxxxxxxxx
> > Reviewed-by: John Hubbard <jhubbard@xxxxxxxxxx>
> > Reviewed-by: Jan Kara <jack@xxxxxxx>
> > Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
> 
> Thanks for the v3 and v4 updates.
> 
> For the seqcount_t parts:
> 
>   Acked-by: "Ahmed S. Darwish" <a.darwish@xxxxxxxxxxxxx>

Thank you for your help!

Jason




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