Re: [PATCH v1 2/3] mm: process_mrelease: skip LRU movement for exclusive file folios

Minchan Kim
2026-04-29T21:42:20Z

On Wed, Apr 29, 2026 at 10:55:25AM +0200, David Hildenbrand (Arm) wrote:
>
> >
> > -static bool __oom_reap_task_mm(struct mm_struct *mm)
> > +static bool __oom_reap_task_mm(struct mm_struct *mm, bool try_evict_file_folios)
> > {
> > struct vm_area_struct *vma;
> > bool ret = true;
> > @@ -556,12 +556,14 @@ static bool __oom_reap_task_mm(struct mm_struct *mm)
> > mm, vma->vm_start,
> > vma->vm_end);
> > tlb_gather_mmu(&tlb, mm);
> > + tlb.try_evict_file_folios = try_evict_file_folios;
> > + struct zap_details details = { .ignore_access = try_evict_file_folios };
> > if (mmu_notifier_invalidate_range_start_nonblock(&range)) {
> > tlb_finish_mmu(&tlb);
> > ret = false;
> > continue;
> > }
> > - unmap_page_range(&tlb, vma, range.start, range.end, NULL);
> > + unmap_page_range(&tlb, vma, range.start, range.end, &details);
> > mmu_notifier_invalidate_range_end(&range);
>
>
> This API was changed in the meantime into zap_vma_for_reaping(), and I do not
> want to pass details on the new interface. If so, zap_vma_for_reaping() would
> handle that internally I guess.

Will take a look what's the best way.

Thank you.