[57/94] arch/s390: Use maple tree iterators instead of linked list.
diff mbox series

Message ID 20210428153542.2814175-58-Liam.Howlett@Oracle.com
State New, archived
Headers show
Series
  • Introducing the Maple Tree
Related show

Commit Message

Liam Howlett April 28, 2021, 3:36 p.m. UTC
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
 arch/s390/mm/gmap.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

Patch
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diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c
index 9bb2c7512cd5..77879744d652 100644
--- a/arch/s390/mm/gmap.c
+++ b/arch/s390/mm/gmap.c
@@ -2502,8 +2502,10 @@  static const struct mm_walk_ops thp_split_walk_ops = {
 static inline void thp_split_mm(struct mm_struct *mm)
 {
 	struct vm_area_struct *vma;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
 
-	for (vma = mm->mmap; vma != NULL; vma = vma->vm_next) {
+	/* Must hold mm_mt lock already */
+	mas_for_each(&mas, vma, ULONG_MAX) {
 		vma->vm_flags &= ~VM_HUGEPAGE;
 		vma->vm_flags |= VM_NOHUGEPAGE;
 		walk_page_vma(vma, &thp_split_walk_ops, NULL);
@@ -2571,8 +2573,10 @@  int gmap_mark_unmergeable(void)
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma;
 	int ret;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
 
-	for (vma = mm->mmap; vma; vma = vma->vm_next) {
+	/* Must hold mm_mt lock already */
+	mas_for_each(&mas, vma, ULONG_MAX) {
 		ret = ksm_madvise(vma, vma->vm_start, vma->vm_end,
 				  MADV_UNMERGEABLE, &vma->vm_flags);
 		if (ret)