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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>
This commit is contained in:
Jeremy Fitzhardinge
2008-03-17 16:37:04 -07:00
committed by Ingo Molnar
parent ee5aa8d3ba
commit f9fbf1a36a
2 changed files with 17 additions and 9 deletions
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15
arch/x86/mm/pgtable.c
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@@ -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;
}