1 files changed, 6 insertions, 24 deletions
diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c
index 58696a0c4e4a..30387a6e98ff 100644
--- a/arch/s390/mm/pgalloc.c
+++ b/arch/s390/mm/pgalloc.c
@@ -21,7 +21,7 @@
 int page_table_allocate_pgste = 0;
 EXPORT_SYMBOL(page_table_allocate_pgste);
 
-static struct ctl_table page_table_sysctl[] = {
+static const struct ctl_table page_table_sysctl[] = {
 	{
 		.procname	= "allocate_pgste",
 		.data		= &page_table_allocate_pgste,
@@ -88,12 +88,14 @@ int crst_table_upgrade(struct mm_struct *mm, unsigned long end)
 		if (unlikely(!p4d))
 			goto err_p4d;
 		crst_table_init(p4d, _REGION2_ENTRY_EMPTY);
+		pagetable_p4d_ctor(virt_to_ptdesc(p4d));
 	}
 	if (end > _REGION1_SIZE) {
 		pgd = crst_table_alloc(mm);
 		if (unlikely(!pgd))
 			goto err_pgd;
 		crst_table_init(pgd, _REGION1_ENTRY_EMPTY);
+		pagetable_pgd_ctor(virt_to_ptdesc(pgd));
 	}
 
 	spin_lock_bh(&mm->page_table_lock);
@@ -130,6 +132,7 @@ int crst_table_upgrade(struct mm_struct *mm, unsigned long end)
 	return 0;
 
 err_pgd:
+	pagetable_dtor(virt_to_ptdesc(p4d));
 	crst_table_free(mm, p4d);
 err_p4d:
 	return -ENOMEM;
@@ -173,37 +176,16 @@ unsigned long *page_table_alloc(struct mm_struct *mm)
 	}
 	table = ptdesc_to_virt(ptdesc);
 	__arch_set_page_dat(table, 1);
-	/* pt_list is used by gmap only */
-	INIT_LIST_HEAD(&ptdesc->pt_list);
 	memset64((u64 *)table, _PAGE_INVALID, PTRS_PER_PTE);
 	memset64((u64 *)table + PTRS_PER_PTE, 0, PTRS_PER_PTE);
 	return table;
 }
 
-static void pagetable_pte_dtor_free(struct ptdesc *ptdesc)
-{
-	pagetable_pte_dtor(ptdesc);
-	pagetable_free(ptdesc);
-}
-
 void page_table_free(struct mm_struct *mm, unsigned long *table)
 {
 	struct ptdesc *ptdesc = virt_to_ptdesc(table);
 
-	pagetable_pte_dtor_free(ptdesc);
-}
-
-void __tlb_remove_table(void *table)
-{
-	struct ptdesc *ptdesc = virt_to_ptdesc(table);
-	struct page *page = ptdesc_page(ptdesc);
-
-	if (compound_order(page) == CRST_ALLOC_ORDER) {
-		/* pmd, pud, or p4d */
-		pagetable_free(ptdesc);
-		return;
-	}
-	pagetable_pte_dtor_free(ptdesc);
+	pagetable_dtor_free(ptdesc);
 }
 
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -211,7 +193,7 @@ static void pte_free_now(struct rcu_head *head)
 {
 	struct ptdesc *ptdesc = container_of(head, struct ptdesc, pt_rcu_head);
 
-	pagetable_pte_dtor_free(ptdesc);
+	pagetable_dtor_free(ptdesc);
 }
 
 void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable)