mm: group pte related helpers together

This reduces/simplifies the diff for the next patch which moves THP
specific code.

No semantical changes !

Acked-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com
Link: http://lkml.kernel.org/r/1442918096-17454-9-git-send-email-vgupta@synopsys.com
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

mm/pgtable-generic.c

@@ -57,6 +57,31 @@ int ptep_set_access_flags(struct vm_area_struct *vma,
 }
 #endif
 
+#ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
+int ptep_clear_flush_young(struct vm_area_struct *vma,
+			   unsigned long address, pte_t *ptep)
+{
+	int young;
+	young = ptep_test_and_clear_young(vma, address, ptep);
+	if (young)
+		flush_tlb_page(vma, address);
+	return young;
+}
+#endif
+
+#ifndef __HAVE_ARCH_PTEP_CLEAR_FLUSH
+pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address,
+		       pte_t *ptep)
+{
+	struct mm_struct *mm = (vma)->vm_mm;
+	pte_t pte;
+	pte = ptep_get_and_clear(mm, address, ptep);
+	if (pte_accessible(mm, pte))
+		flush_tlb_page(vma, address);
+	return pte;
+}
+#endif
+
 #ifndef __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS
 int pmdp_set_access_flags(struct vm_area_struct *vma,
 			  unsigned long address, pmd_t *pmdp,
@@ -77,18 +102,6 @@ int pmdp_set_access_flags(struct vm_area_struct *vma,
 }
 #endif
 
-#ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
-int ptep_clear_flush_young(struct vm_area_struct *vma,
-			   unsigned long address, pte_t *ptep)
-{
-	int young;
-	young = ptep_test_and_clear_young(vma, address, ptep);
-	if (young)
-		flush_tlb_page(vma, address);
-	return young;
-}
-#endif
-
 #ifndef __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH
 int pmdp_clear_flush_young(struct vm_area_struct *vma,
 			   unsigned long address, pmd_t *pmdp)
@@ -106,19 +119,6 @@ int pmdp_clear_flush_young(struct vm_area_struct *vma,
 }
 #endif
 
-#ifndef __HAVE_ARCH_PTEP_CLEAR_FLUSH
-pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address,
-		       pte_t *ptep)
-{
-	struct mm_struct *mm = (vma)->vm_mm;
-	pte_t pte;
-	pte = ptep_get_and_clear(mm, address, ptep);
-	if (pte_accessible(mm, pte))
-		flush_tlb_page(vma, address);
-	return pte;
-}
-#endif
-
 #ifndef __HAVE_ARCH_PMDP_HUGE_CLEAR_FLUSH
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address,