patch-2.4.0-test10 linux/include/asm-generic/pgtable.h

• Lines: 44
• Date: Thu Oct 19 15:51:16 2000
• Orig file: v2.4.0-test9/linux/include/asm-generic/pgtable.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test9/linux/include/asm-generic/pgtable.h linux/include/asm-generic/pgtable.h
@@ -0,0 +1,43 @@
+#ifndef _ASM_GENERIC_PGTABLE_H
+#define _ASM_GENERIC_PGTABLE_H
+
+static inline int ptep_test_and_clear_young(pte_t *ptep)
+{
+	pte_t pte = *ptep;
+	if (!pte_young(pte))
+		return 0;
+	set_pte(ptep, pte_mkold(pte));
+	return 1;
+}
+
+static inline int ptep_test_and_clear_dirty(pte_t *ptep)
+{
+	pte_t pte = *ptep;
+	if (!pte_dirty(pte))
+		return 0;
+	set_pte(ptep, pte_mkclean(pte));
+	return 1;
+}
+
+static inline pte_t ptep_get_and_clear(pte_t *ptep)
+{
+	pte_t pte = *ptep;
+	pte_clear(ptep);
+	return pte;
+}
+
+static inline void ptep_clear_wrprotect(pte_t *ptep)
+{
+	pte_t old_pte = *ptep;
+	set_pte(ptep, pte_wrprotect(old_pte));
+}
+
+static inline void ptep_mkdirty(pte_t *ptep)
+{
+	pte_t old_pte = *ptep;
+	set_pte(ptep, pte_mkdirty(old_pte));
+}
+
+#define pte_same(A,B)	(pte_val(A) == pte_val(B))
+
+#endif /* _ASM_GENERIC_PGTABLE_H */