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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-03-17 16:37:04 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-24 23:57:31 +0200 |
| commit | f9fbf1a36a6bb6a639459802bccee01185ee3220 (patch) | |
| tree | 9f8280c8c4dbb93902ef611a0975acd282cae57b /arch/x86/mm | |
| parent | ee5aa8d3ba65d76157f22b7afedd089d8acfe524 (diff) | |
x86/pgtable.h: demacro ptep_test_and_clear_young
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>
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/pgtable.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index e7cda2057e1d..54bd77a7eee0 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -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; +} |