x86/pgtable: unify pagetable accessors, #1

based on:

 Subject: x86/pgtable: unify pagetable accessors
 From: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

include/asm-x86/pgtable_64.h

@@ -179,21 +179,27 @@ static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
  * Undefined behaviour if not..
  */
 #define __LARGE_PTE (_PAGE_PSE|_PAGE_PRESENT)
+
 static inline int pte_dirty(pte_t pte)		{ return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte)		{ return pte_val(pte) & _PAGE_ACCESSED; }
 static inline int pte_write(pte_t pte)		{ return pte_val(pte) & _PAGE_RW; }
 static inline int pte_file(pte_t pte)		{ return pte_val(pte) & _PAGE_FILE; }
 static inline int pte_huge(pte_t pte)		{ return pte_val(pte) & _PAGE_PSE; }
 
-static inline pte_t pte_mkclean(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_DIRTY)); return pte; }
-static inline pte_t pte_mkold(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_ACCESSED)); return pte; }
-static inline pte_t pte_wrprotect(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_RW)); return pte; }
-static inline pte_t pte_mkexec(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_NX)); return pte; }
-static inline pte_t pte_mkdirty(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) | _PAGE_DIRTY)); return pte; }
-static inline pte_t pte_mkyoung(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) | _PAGE_ACCESSED)); return pte; }
-static inline pte_t pte_mkwrite(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) | _PAGE_RW)); return pte; }
-static inline pte_t pte_mkhuge(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) | _PAGE_PSE)); return pte; }
-static inline pte_t pte_clrhuge(pte_t pte)	{ set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_PSE)); return pte; }
+static inline int pmd_large(pmd_t pte) {
+	return (pmd_val(pte) & (_PAGE_PSE|_PAGE_PRESENT)) ==
+		(_PAGE_PSE|_PAGE_PRESENT);
+}
+
+static inline pte_t pte_mkclean(pte_t pte)	{ return __pte(pte_val(pte) & ~_PAGE_DIRTY); }
+static inline pte_t pte_mkold(pte_t pte)	{ return __pte(pte_val(pte) & ~_PAGE_ACCESSED); }
+static inline pte_t pte_wrprotect(pte_t pte)	{ return __pte(pte_val(pte) & ~_PAGE_RW); }
+static inline pte_t pte_mkexec(pte_t pte)	{ return __pte(pte_val(pte) & ~_PAGE_NX); }
+static inline pte_t pte_mkdirty(pte_t pte)	{ return __pte(pte_val(pte) | _PAGE_DIRTY); }
+static inline pte_t pte_mkyoung(pte_t pte)	{ return __pte(pte_val(pte) | _PAGE_ACCESSED); }
+static inline pte_t pte_mkwrite(pte_t pte)	{ return __pte(pte_val(pte) | _PAGE_RW); }
+static inline pte_t pte_mkhuge(pte_t pte)	{ return __pte(pte_val(pte) | _PAGE_PSE); }
+static inline pte_t pte_clrhuge(pte_t pte)	{ return __pte(pte_val(pte) & ~_PAGE_PSE); }
 
 struct vm_area_struct;