[PATCH v2 50/70] kernel/sched/fair: Use maple tree iterators instead of linked list
Liam R. Howlett
Liam.Howlett at Oracle.com
Tue Jan 12 11:12:20 EST 2021
Signed-off-by: Liam R. Howlett <Liam.Howlett at Oracle.com>
---
kernel/sched/fair.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index ae7ceba8fd4f2..1cb3a245ffd85 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2723,6 +2723,7 @@ 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));
@@ -2775,13 +2776,16 @@ 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;
--
2.28.0
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