Re: [PATCH v1 13/15] mm: handling Non-LRU pages returned by vm_normal_pages

On Thu, May 12, 2022 at 05:33:44PM -0500, Sierra Guiza, Alejandro (Alex) wrote: > > On 5/11/2022 1:50 PM, Jason Gunthorpe wrote: > > On Thu, May 05, 2022 at 04:34:36PM -0500, Alex Sierra wrote: > > > > > diff --git a/mm/memory.c b/mm/memory.c > > > index 76e3af9639d9..892c4cc54dc2 100644 > > >

Re: [PATCH v1 13/15] mm: handling Non-LRU pages returned by vm_normal_pages

On 5/11/2022 1:50 PM, Jason Gunthorpe wrote: On Thu, May 05, 2022 at 04:34:36PM -0500, Alex Sierra wrote: diff --git a/mm/memory.c b/mm/memory.c index 76e3af9639d9..892c4cc54dc2 100644 +++ b/mm/memory.c @@ -621,6 +621,13 @@ struct page *vm_normal_page(struct vm_area_struct *vma, unsigned

Re: [PATCH v1 13/15] mm: handling Non-LRU pages returned by vm_normal_pages

On Thu, May 05, 2022 at 04:34:36PM -0500, Alex Sierra wrote: > diff --git a/mm/memory.c b/mm/memory.c > index 76e3af9639d9..892c4cc54dc2 100644 > +++ b/mm/memory.c > @@ -621,6 +621,13 @@ struct page *vm_normal_page(struct vm_area_struct *vma, > unsigned long addr, > if

[PATCH v1 13/15] mm: handling Non-LRU pages returned by vm_normal_pages

With DEVICE_COHERENT, we'll soon have vm_normal_pages() return device-managed anonymous pages that are not LRU pages. Although they behave like normal pages for purposes of mapping in CPU page, and for COW. They do not support LRU lists, NUMA migration or THP. We also introduced a FOLL_LRU flag