Hi David,
> > For drivers that would like to longterm-pin the pages associated
> > with a file, the pin_user_pages_fd() API provides an option to
> > not only FOLL_PIN the pages but also to check and migrate them
> > if they reside in movable zone or CMA block. For now, this API
> > can only work
On Tue, Oct 03, 2023 at 12:44:45AM -0700, Vivek Kasireddy wrote:
> +/**
> + * pin_user_pages_fd() - pin user pages associated with a file
> + * @fd: the fd whose pages are to be pinned
> + * @start: starting file offset
> + * @nr_pages: number of pages from start to pin
> + *
On Fri, Oct 06, 2023 at 10:03:33AM +0200, David Hildenbrand wrote:
> > + *
> > + * Returns number of pages pinned. This would be equal to the number of
> > + * pages requested.
> > + * If nr_pages is 0 or negative, returns 0. If no pages were pinned,
> > returns
> > + * -errno.
> > + */
> > +long
On 03.10.23 09:44, Vivek Kasireddy wrote:
For drivers that would like to longterm-pin the pages associated
with a file, the pin_user_pages_fd() API provides an option to
not only FOLL_PIN the pages but also to check and migrate them
if they reside in movable zone or CMA block. For now, this API
For drivers that would like to longterm-pin the pages associated
with a file, the pin_user_pages_fd() API provides an option to
not only FOLL_PIN the pages but also to check and migrate them
if they reside in movable zone or CMA block. For now, this API
can only work with files belonging to shmem
