From: Jason Gunthorpe <jgg@nvidia.com>
To: "Ahmed S. Darwish" <a.darwish@linutronix.de>
Cc: <linux-kernel@vger.kernel.org>, Peter Xu <peterx@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>,
Christoph Hellwig <hch@lst.de>, Hugh Dickins <hughd@google.com>,
Jan Kara <jack@suse.cz>, Jann Horn <jannh@google.com>,
John Hubbard <jhubbard@nvidia.com>,
Kirill Shutemov <kirill@shutemov.name>,
Kirill Tkhai <ktkhai@virtuozzo.com>,
Leon Romanovsky <leonro@nvidia.com>,
Linux-MM <linux-mm@kvack.org>, Michal Hocko <mhocko@suse.com>,
Oleg Nesterov <oleg@redhat.com>
Subject: Re: [PATCH v4 2/2] mm: prevent gup_fast from racing with COW during fork
Date: Thu, 12 Nov 2020 10:31:28 -0400 [thread overview]
Message-ID: <20201112143128.GJ2620339@nvidia.com> (raw)
In-Reply-To: <X6znRv2Bq/LNGNsz@lx-t490>
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@linux-foundation.org>
> > Link: https://lore.kernel.org/r/CAHk-=wi=iCnYCARbPGjkVJu9eyYeZ13N64tZYLdOB8CP5Q_PLw@mail.gmail.com
> > Reviewed-by: John Hubbard <jhubbard@nvidia.com>
> > Reviewed-by: Jan Kara <jack@suse.cz>
> > Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
>
> Thanks for the v3 and v4 updates.
>
> For the seqcount_t parts:
>
> Acked-by: "Ahmed S. Darwish" <a.darwish@linutronix.de>
Thank you for your help!
Jason
next prev parent reply other threads:[~2020-11-12 14:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-10 23:44 [PATCH v4 0/2] Add a seqcount between gup_fast and copy_page_range() Jason Gunthorpe
2020-11-10 23:44 ` [PATCH v4 1/2] mm: reorganize internal_get_user_pages_fast() Jason Gunthorpe
2020-11-10 23:44 ` [PATCH v4 2/2] mm: prevent gup_fast from racing with COW during fork Jason Gunthorpe
2020-11-11 19:59 ` Peter Xu
2020-11-12 7:41 ` Ahmed S. Darwish
2020-11-12 14:31 ` Jason Gunthorpe [this message]
2020-11-11 18:27 ` [PATCH v4 0/2] Add a seqcount between gup_fast and copy_page_range() Linus Torvalds
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