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 2LUVqsyu 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b/mm/memory.c > index 062136d25da3..5ecee3eac29d 100644 > --- a/mm/memory.c > +++ b/mm/memory.c > @@ -4648,6 +4648,7 @@ static vm_fault_t do_read_fault(struct vm_fault *vmf) > static vm_fault_t do_cow_fault(struct vm_fault *vmf) > { > struct vm_area_struct *vma = vmf->vma; > + struct folio *folio; > vm_fault_t ret; > > ret = vmf_can_call_fault(vmf); > @@ -4656,16 +4657,11 @@ static vm_fault_t do_cow_fault(struct vm_fault *vmf) > if (ret) > return ret; > > - vmf->cow_page = alloc_page_vma(GFP_HIGHUSER_MOVABLE, vma, vmf->address); > - if (!vmf->cow_page) > + folio = folio_prealloc(vma->vm_mm, vma, vmf->address, false); > + if (!folio) > return VM_FAULT_OOM; > > - if (mem_cgroup_charge(page_folio(vmf->cow_page), vma->vm_mm, > - GFP_KERNEL)) { > - put_page(vmf->cow_page); > - return VM_FAULT_OOM; > - } > - folio_throttle_swaprate(page_folio(vmf->cow_page), GFP_KERNEL); Hi Kefeng, I was wondering why this block of code is no longer needed after using a folio? Thanks, Sidhartha Kumar > + vmf->cow_page = &folio->page; > > ret = __do_fault(vmf); > if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY))) > @@ -4674,7 +4670,7 @@ static vm_fault_t do_cow_fault(struct vm_fault *vmf) > return ret; > > copy_user_highpage(vmf->cow_page, vmf->page, vmf->address, vma); > - __SetPageUptodate(vmf->cow_page); > + __folio_mark_uptodate(folio); > > ret |= finish_fault(vmf); > unlock_page(vmf->page); > @@ -4683,7 +4679,7 @@ static vm_fault_t do_cow_fault(struct vm_fault *vmf) > goto uncharge_out; > return ret; > uncharge_out: > - put_page(vmf->cow_page); > + folio_put(folio); > return ret; > } >