[PATCH v3 63/66] s390: Use the maple tree iterator for vdso

[Liam Howlett]

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

Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
---
 arch/s390/kernel/vdso.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 99694260cac9..26be77ed45c6 100644
--- 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))
-- 
2.30.2