mm/oom_kill: Use maple tree iterators instead of vma linked list

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

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 04b19b7b5435bf9827b7139503180e0ce2da6d12..dc9cd2a83064d013887f817ab009d571f74d17a1 100644 (file)
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -516,6 +516,7 @@ bool __oom_reap_task_mm(struct mm_struct *mm)
 {
        struct vm_area_struct *vma;
        bool ret = true;
+       MA_STATE(mas, &mm->mm_mt, 0, 0);
 
        /*
         * Tell all users of get_user/copy_from_user etc... that the content
@@ -525,7 +526,7 @@ bool __oom_reap_task_mm(struct mm_struct *mm)
         */
        set_bit(MMF_UNSTABLE, &mm->flags);
 
-       for (vma = mm->mmap ; vma; vma = vma->vm_next) {
+       mas_for_each(&mas, vma, ULONG_MAX) {
                if (!can_madv_lru_vma(vma))
                        continue;