On Tue, Jan 14, 2025 at 09:22:00AM -0800, Dan Williams wrote:
> David Hildenbrand wrote:
> > > +vm_fault_t vmf_insert_folio_pmd(struct vm_fault *vmf, struct folio
> > > *folio, bool write)
> > > +{
> > > + struct vm_area_struct *vma = vmf->vma;
> > > + unsigned long addr = vmf->address & PMD_MASK;
David Hildenbrand wrote:
> > +vm_fault_t vmf_insert_folio_pmd(struct vm_fault *vmf, struct folio *folio,
> > bool write)
> > +{
> > + struct vm_area_struct *vma = vmf->vma;
> > + unsigned long addr = vmf->address & PMD_MASK;
> > + struct mm_struct *mm = vma->vm_mm;
> > + spinlock_t *ptl;
>
+vm_fault_t vmf_insert_folio_pmd(struct vm_fault *vmf, struct folio *folio,
bool write)
+{
+ struct vm_area_struct *vma = vmf->vma;
+ unsigned long addr = vmf->address & PMD_MASK;
+ struct mm_struct *mm = vma->vm_mm;
+ spinlock_t *ptl;
+ pgtable_t pgtable = NULL;
+
+
Alistair Popple wrote:
> Currently DAX folio/page reference counts are managed differently to
> normal pages. To allow these to be managed the same as normal pages
> introduce vmf_insert_folio_pmd. This will map the entire PMD-sized folio
> and take references as it would for a normally mapped page
Currently DAX folio/page reference counts are managed differently to
normal pages. To allow these to be managed the same as normal pages
introduce vmf_insert_folio_pmd. This will map the entire PMD-sized folio
and take references as it would for a normally mapped page.
This is distinct from the cu
