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authorJeremy Fitzhardinge <jeremy@goop.org>2008-03-17 16:37:03 -0700
committerIngo Molnar <mingo@elte.hu>2008-04-24 23:57:31 +0200
commitee5aa8d3ba65d76157f22b7afedd089d8acfe524 (patch)
treebddbec4ffd9508c3bd7afaeebc15b28226022b6d /arch
parent2761fa0920756dc471d297843646a4a9bca6656f (diff)
x86/pgtable.h: demacro ptep_set_access_flags
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')
-rw-r--r--arch/x86/mm/pgtable.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 5accc08683c..e7cda2057e1 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -1,5 +1,6 @@
#include <linux/mm.h>
#include <asm/pgalloc.h>
+#include <asm/pgtable.h>
#include <asm/tlb.h>
pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
@@ -264,3 +265,18 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd)
free_page((unsigned long)pgd);
}
#endif
+
+int ptep_set_access_flags(struct vm_area_struct *vma,
+ unsigned long address, pte_t *ptep,
+ pte_t entry, int dirty)
+{
+ int changed = !pte_same(*ptep, entry);
+
+ if (changed && dirty) {
+ *ptep = entry;
+ pte_update_defer(vma->vm_mm, address, ptep);
+ flush_tlb_page(vma, address);
+ }
+
+ return changed;
+}