s390: Use the maple tree iterator for vdso

remove vma->vm_next and use the maple tree mas_for_each iterator.

Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>

diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 99694260cac97bc618bd7cce2c2672fdf9053604..26be77ed45c67030b5bd6f5b4f2eb7cc9d4575a0 100644 (file)
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -68,10 +68,11 @@ static struct page *find_timens_vvar_page(struct vm_area_struct *vma)
 int vdso_join_timens(struct task_struct *task, struct time_namespace *ns)
 {
        struct mm_struct *mm = task->mm;
+       MA_STATE(mas, &mm->mm_mt, 0, 0);
        struct vm_area_struct *vma;
 
        mmap_read_lock(mm);
-       for (vma = mm->mmap; vma; vma = vma->vm_next) {
+       mas_for_each(&mas, vma, ULONG_MAX) {
                unsigned long size = vma->vm_end - vma->vm_start;
 
                if (!vma_is_special_mapping(vma, &vvar_mapping))