Messages in this thread | | | Date | Fri, 21 Sep 2007 15:14:52 -0400 | From | Slava Abramov <> | Subject | ptep_test_and_clear_young() i386 vs. x86_64 |
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Hi All!
Is there any special reason why ptep_test_and_clear_young() implementation for x86_64 does not call pte_update()?
Compare the following:
include/asm-x86_64/pgtable.h:
static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { if (!pte_young(*ptep)) return 0; return test_and_clear_bit(_PAGE_BIT_ACCESSED, &ptep->pte);
}
include/asm-i386/pgtable.h:
#define ptep_test_and_clear_young(vma, addr, ptep) ({ \ int __ret = 0; \ if (pte_young(*(ptep))) \ __ret = test_and_clear_bit(_PAGE_BIT_ACCESSED, \ &(ptep)->pte_low); \ if (__ret) \ pte_update((vma)->vm_mm, addr, ptep); \ __ret; \
})
Slava
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