[S390] pgtable: move pte_mkhuge() from hugetlb.h to pgtable.h

All architectures besides s390 have pte_mkhuge() defined in pgtable.h.
So move the function to pgtable.h on s390 as well.
Fixes a compile error introduced with "hugetlb: hugepage migration core"
in linux-next which only happens on s390.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 28 insertions, 26 deletions

diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h
index bb8343d157bc..b56403c2df28 100644
--- a/arch/s390/include/asm/hugetlb.h
+++ b/arch/s390/include/asm/hugetlb.h
@@ -37,32 +37,6 @@ static inline int prepare_hugepage_range(struct file *file,
 int arch_prepare_hugepage(struct page *page);
 void arch_release_hugepage(struct page *page);
 
-static inline pte_t pte_mkhuge(pte_t pte)
-{
-        /*
-         * PROT_NONE needs to be remapped from the pte type to the ste type.
-         * The HW invalid bit is also different for pte and ste. The pte
-         * invalid bit happens to be the same as the ste _SEGMENT_ENTRY_LARGE
-         * bit, so we don't have to clear it.
-         */
-        if (pte_val(pte) & _PAGE_INVALID) {
-                if (pte_val(pte) & _PAGE_SWT)
-                        pte_val(pte) |= _HPAGE_TYPE_NONE;
-                pte_val(pte) |= _SEGMENT_ENTRY_INV;
-        }
-        /*
-         * Clear SW pte bits SWT and SWX, there are no SW bits in a segment
-         * table entry.
-         */
-        pte_val(pte) &= ~(_PAGE_SWT | _PAGE_SWX);
-        /*
-         * Also set the change-override bit because we don't need dirty bit
-         * tracking for hugetlbfs pages.
-         */
-        pte_val(pte) |= (_SEGMENT_ENTRY_LARGE | _SEGMENT_ENTRY_CO);
-        return pte;
-}
-
 static inline pte_t huge_pte_wrprotect(pte_t pte)
 {
         pte_val(pte) |= _PAGE_RO;
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index f79e7bb9ae1e..986dc9476c21 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -772,6 +772,34 @@ static inline pte_t pte_mkspecial(pte_t pte)
         return pte;
 }
 
+#ifdef CONFIG_HUGETLB_PAGE
+static inline pte_t pte_mkhuge(pte_t pte)
+{
+        /*
+         * PROT_NONE needs to be remapped from the pte type to the ste type.
+         * The HW invalid bit is also different for pte and ste. The pte
+         * invalid bit happens to be the same as the ste _SEGMENT_ENTRY_LARGE
+         * bit, so we don't have to clear it.
+         */
+        if (pte_val(pte) & _PAGE_INVALID) {
+                if (pte_val(pte) & _PAGE_SWT)
+                        pte_val(pte) |= _HPAGE_TYPE_NONE;
+                pte_val(pte) |= _SEGMENT_ENTRY_INV;
+        }
+        /*
+         * Clear SW pte bits SWT and SWX, there are no SW bits in a segment
+         * table entry.
+         */
+        pte_val(pte) &= ~(_PAGE_SWT | _PAGE_SWX);
+        /*
+         * Also set the change-override bit because we don't need dirty bit
+         * tracking for hugetlbfs pages.
+         */
+        pte_val(pte) |= (_SEGMENT_ENTRY_LARGE | _SEGMENT_ENTRY_CO);
+        return pte;
+}
+#endif
+
 #ifdef CONFIG_PGSTE
 /*
  * Get (and clear) the user dirty bit for a PTE.