s390/mm/hugetlbfs: Remove huge_pte_none() / huge_pte_none_mostly()

Slightly cleanup arch/s390/include/asm/hugetlb.h:

- Remove huge_pte_none() / huge_pte_none_mostly() which are identical
  to the generic variants

- Coding style adjustments

Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

Author: hcahca

arch/s390/include/asm/hugetlb.h

@@ -20,12 +20,13 @@
 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 		     pte_t *ptep, pte_t pte, unsigned long sz);
 void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
-		     pte_t *ptep, pte_t pte);
+		       pte_t *ptep, pte_t pte);
+
 #define __HAVE_ARCH_HUGE_PTEP_GET
-extern pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
+pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
+
 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
-extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
-			      unsigned long addr, pte_t *ptep);
+pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
 
 static inline void arch_clear_hugetlb_flags(struct folio *folio)
 {
@@ -56,6 +57,7 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     pte_t pte, int dirty)
 {
 	int changed = !pte_same(huge_ptep_get(vma->vm_mm, addr, ptep), pte);
+
 	if (changed) {
 		huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
 		__set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
@@ -68,19 +70,8 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
 	pte_t pte = huge_ptep_get_and_clear(mm, addr, ptep);
-	__set_huge_pte_at(mm, addr, ptep, pte_wrprotect(pte));
-}
 
-#define __HAVE_ARCH_HUGE_PTE_NONE
-static inline int huge_pte_none(pte_t pte)
-{
-	return pte_none(pte);
-}
-
-#define __HAVE_ARCH_HUGE_PTE_NONE_MOSTLY
-static inline int huge_pte_none_mostly(pte_t pte)
-{
-	return huge_pte_none(pte) || is_pte_marker(pte);
+	__set_huge_pte_at(mm, addr, ptep, pte_wrprotect(pte));
 }
 
 #define __HAVE_ARCH_HUGE_PTE_MKUFFD_WP