On 05/01/2013 12:12 AM, Pavel Emelyanov wrote:
> +static inline void clear_soft_dirty(struct vm_area_struct *vma,
> + unsigned long addr, pte_t *pte)
> +{
> +#ifdef CONFIG_MEM_SOFT_DIRTY
> + /*
> + * The soft-dirty tracker uses #PF-s to catch writes
> + * to pages, so write-protect the pte as well. See the
> + * Documentation/vm/soft-dirty.txt for full description
> + * of how soft-dirty works.
> + */
> + pte_t ptent = *pte;
> + ptent = pte_wrprotect(ptent);
> + ptent = pte_clear_flags(ptent, _PAGE_SOFT_DIRTY);
> + set_pte_at(vma->vm_mm, addr, pte, ptent);
> +#endif
It seems that TLBs are not flushed and mmu-notification is not called?
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