[PATCH v2 28/70] arch/arm64: Remove mmap linked list from vdso.

[Liam R. Howlett]

Start using the maple tree

Signed-off-by: Liam R. Howlett <liam.howl...@oracle.com>
---
 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 debb8995d57fb..caa7d8f6b99db 100644
--- a/arch/arm64/kernel/vdso.c
+++ b/arch/arm64/kernel/vdso.c
@@ -144,10 +144,12 @@ 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))
@@ -157,6 +159,7 @@ 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;
-- 
2.28.0