Re: [PATCH] mm/gup: fix omission of check on FOLL_LONGTERM in get_user_pages_fast()

From: Ira Weiny
Date: Fri May 31 2019 - 13:16:17 EST


On Fri, May 31, 2019 at 07:05:27PM +0800, Pingfan Liu wrote:
> On Fri, May 31, 2019 at 7:21 AM John Hubbard <jhubbard@xxxxxxxxxx> wrote:
> >
> >
> > Rather lightly tested...I've compile-tested with CONFIG_CMA and !CONFIG_CMA,
> > and boot tested with CONFIG_CMA, but could use a second set of eyes on whether
> > I've added any off-by-one errors, or worse. :)
> >
> Do you mind I send V2 based on your above patch? Anyway, it is a simple bug fix.

FWIW please split out the nr_pinned change to a separate patch.

Thanks,
Ira