From: Dave Kleikamp <dave.kleikamp@xxxxxxxxxx>
Date: Fri, 14 Dec 2012 15:02:00 -0600
> static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
> unsigned long addr, pte_t *ptep,
> pte_t pte, int dirty)
> {
> - return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
> + int changed = !pte_same(*ptep, pte);
> + if (changed)
> + set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
> + return changed;
> }
>
> static inline pte_t huge_ptep_get(pte_t *ptep)
This lacks the TLB flush after setting the pte, which is really
needed.
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