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x86/pgtable.h: demacro ptep_test_and_clear_young
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Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Jeremy Fitzhardinge authored and Ingo Molnar committed Apr 24, 2008
1 parent ee5aa8d commit f9fbf1a
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Showing 2 changed files with 17 additions and 9 deletions.
15 changes: 15 additions & 0 deletions arch/x86/mm/pgtable.c
Original file line number Diff line number Diff line change
Expand Up @@ -280,3 +280,18 @@ int ptep_set_access_flags(struct vm_area_struct *vma,

return changed;
}

int ptep_test_and_clear_young(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep)
{
int ret = 0;

if (pte_young(*ptep))
ret = test_and_clear_bit(_PAGE_BIT_ACCESSED,
&ptep->pte);

if (ret)
pte_update(vma->vm_mm, addr, ptep);

return ret;
}
11 changes: 2 additions & 9 deletions include/asm-x86/pgtable.h
Original file line number Diff line number Diff line change
Expand Up @@ -394,15 +394,8 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma,
pte_t entry, int dirty);

#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
#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); \
if (__ret) \
pte_update((vma)->vm_mm, addr, ptep); \
__ret; \
})
extern int ptep_test_and_clear_young(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep);

#define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
#define ptep_clear_flush_young(vma, address, ptep) \
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