On 11/13/19 3:22 PM, John Hubbard wrote:
> On 11/13/19 2:43 AM, Jan Kara wrote:
> ...
>> How does FOLL_PIN result in grabbing (at least normal, for now) page
>> reference?
>> I didn't find that anywhere in this patch but it is a prerequisite to
>> converting any user to pin_user_pages()
On 11/13/19 2:43 AM, Jan Kara wrote:
...
How does FOLL_PIN result in grabbing (at least normal, for now) page reference?
I didn't find that anywhere in this patch but it is a prerequisite to
converting any user to pin_user_pages() interface, right?
ohhh, I messed up on this intermediate
On 11/13/19 10:59 AM, Ira Weiny wrote:
On Tue, Nov 12, 2019 at 08:26:56PM -0800, John Hubbard wrote:
Introduce pin_user_pages*() variations of get_user_pages*() calls,
and also pin_longterm_pages*() variations.
These variants all set FOLL_PIN, which is also introduced, and
thoroughly
On Tue, Nov 12, 2019 at 08:26:56PM -0800, John Hubbard wrote:
> Introduce pin_user_pages*() variations of get_user_pages*() calls,
> and also pin_longterm_pages*() variations.
>
> These variants all set FOLL_PIN, which is also introduced, and
> thoroughly documented.
>
> The pin_longterm*()
On Wed, Nov 13, 2019 at 2:43 AM Jan Kara wrote:
>
> On Tue 12-11-19 20:26:56, John Hubbard wrote:
> > Introduce pin_user_pages*() variations of get_user_pages*() calls,
> > and also pin_longterm_pages*() variations.
> >
> > These variants all set FOLL_PIN, which is also introduced, and
> >
> > +/**
> > + * pin_user_pages_fast() - pin user pages in memory without taking locks
> > + *
> > + * Nearly the same as get_user_pages_fast(), except that FOLL_PIN is set.
> > See
> > + * get_user_pages_fast() for documentation on the function arguments,
> > because
> > + * the arguments here
On Tue 12-11-19 20:26:56, John Hubbard wrote:
> Introduce pin_user_pages*() variations of get_user_pages*() calls,
> and also pin_longterm_pages*() variations.
>
> These variants all set FOLL_PIN, which is also introduced, and
> thoroughly documented.
>
> The pin_longterm*() variants also set
Introduce pin_user_pages*() variations of get_user_pages*() calls,
and also pin_longterm_pages*() variations.
These variants all set FOLL_PIN, which is also introduced, and
thoroughly documented.
The pin_longterm*() variants also set FOLL_LONGTERM, in addition
to FOLL_PIN:
pin_user_pages()
