On Sun, May 12, 2013 at 9:23 AM, Kirill A. Shutemov
<kirill.shutemov@xxxxxxxxxxxxxxx> wrote:
> @@ -3316,17 +3361,25 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
> if (unlikely(anon_vma_prepare(vma)))
> return VM_FAULT_OOM;
>
> - cow_page = alloc_page_vma(GFP_HIGHUSER_MOVABLE, vma, address);
> + cow_page = alloc_fault_page_vma(vma, address, flags);
> if (!cow_page)
> - return VM_FAULT_OOM;
> + return VM_FAULT_OOM | VM_FAULT_FALLBACK;
>
Fallback makes sense with !thp ?
> if (mem_cgroup_newpage_charge(cow_page, mm, GFP_KERNEL)) {
> page_cache_release(cow_page);
> - return VM_FAULT_OOM;
> + return VM_FAULT_OOM | VM_FAULT_FALLBACK;
> }
> } else
> cow_page = NULL;
--
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