kernel/sched/fair: Use maple tree iterators instead of linked list

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

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 04a3ce20da671e456905fe56a7496b255c2c4d3b..d0f7b7543a16fd32ad8042fbd9454f60e0d96fbf 100644 (file)
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2734,6 +2734,7 @@ static void task_numa_work(struct callback_head *work)
        unsigned long start, end;
        unsigned long nr_pte_updates = 0;
        long pages, virtpages;
+       MA_STATE(mas, &mm->mm_mt, 0, 0);
 
        SCHED_WARN_ON(p != container_of(work, struct task_struct, numa_work));
 
@@ -2786,13 +2787,16 @@ static void task_numa_work(struct callback_head *work)
 
        if (!mmap_read_trylock(mm))
                return;
-       vma = find_vma(mm, start);
+
+       mas_set(&mas, start);
+       vma = mas_walk(&mas);
        if (!vma) {
                reset_ptenuma_scan(p);
                start = 0;
-               vma = mm->mmap;
+               mas_set(&mas, start);
        }
-       for (; vma; vma = vma->vm_next) {
+
+       mas_for_each(&mas, vma, ULONG_MAX) {
                if (!vma_migratable(vma) || !vma_policy_mof(vma) ||
                        is_vm_hugetlb_page(vma) || (vma->vm_flags & VM_MIXEDMAP)) {
                        continue;