From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>
Start using the maple tree
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
---
arch/arm64/kernel/vdso.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
index a61fc4f989b3..57ea81fbe04b 100644
--- a/arch/arm64/kernel/vdso.c
+++ b/arch/arm64/kernel/vdso.c
@@ -136,10 +136,12 @@ int vdso_join_timens(struct task_struct *task, struct time_namespace *ns)
{
struct mm_struct *mm = task->mm;
struct vm_area_struct *vma;
+ MA_STATE(mas, &mm->mm_mt, 0, 0);
mmap_read_lock(mm);
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ rcu_read_lock();
+ mas_for_each(&mas, vma, ULONG_MAX) {
unsigned long size = vma->vm_end - vma->vm_start;
if (vma_is_special_mapping(vma, vdso_info[VDSO_ABI_AA64].dm))
@@ -149,6 +151,7 @@ int vdso_join_timens(struct task_struct *task, struct time_namespace *ns)
zap_page_range(vma, vma->vm_start, size);
#endif
}
+ rcu_read_unlock();
mmap_read_unlock(mm);
return 0;
--
2.30.2
