hpte_update(mm, addr, old, 0); 
hpte_update(mm, addr, ptep, old, 0); 
static inline int __ptep_test_and_clear_dirty(struct mm_struct *mm, unsigned long addr, pte_t *ptep){	unsigned long old;       	if ((pte_val(*ptep) & _PAGE_DIRTY) == 0)		return 0;	old = pte_update(ptep, _PAGE_DIRTY);	if (old & _PAGE_HASHPTE)		hpte_update(mm, addr, old, 0);	return (old & _PAGE_DIRTY) != 0;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/3c726f8dee6f55e96475574e9f645327e461884c/pgtable.h/clean/include/asm-ppc64/pgtable.h