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authorJeremy Fitzhardinge <jeremy@goop.org>2008-03-17 16:37:04 -0700
committerIngo Molnar <mingo@elte.hu>2008-04-24 23:57:31 +0200
commitf9fbf1a36a6bb6a639459802bccee01185ee3220 (patch)
tree9f8280c8c4dbb93902ef611a0975acd282cae57b /arch/x86
parentee5aa8d3ba65d76157f22b7afedd089d8acfe524 (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')
-rw-r--r--arch/x86/mm/pgtable.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index e7cda2057e1..54bd77a7eee 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;
+}