RE: [PATCH v15 3/9] mm/gup: Introduce memfd_pin_folios() for pinning memfd folios

Hi Oscar, > > On Thu, Jun 13, 2024 at 02:42:05PM -0700, Vivek Kasireddy wrote: > > For drivers that would like to longterm-pin the folios associated > > with a memfd, the memfd_pin_folios() API provides an option to > > not only pin the folios via FOLL_PIN but also to check and migrate > > them i

Re: [PATCH v15 3/9] mm/gup: Introduce memfd_pin_folios() for pinning memfd folios

On Thu, Jun 13, 2024 at 02:42:05PM -0700, Vivek Kasireddy wrote: > For drivers that would like to longterm-pin the folios associated > with a memfd, the memfd_pin_folios() API provides an option to > not only pin the folios via FOLL_PIN but also to check and migrate > them if they reside in movable

[PATCH v15 3/9] mm/gup: Introduce memfd_pin_folios() for pinning memfd folios

For drivers that would like to longterm-pin the folios associated with a memfd, the memfd_pin_folios() API provides an option to not only pin the folios via FOLL_PIN but also to check and migrate them if they reside in movable zone or CMA block. This API currently works with memfds but it should wo