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Date:   Tue, 12 Jan 2021 11:12:03 -0500
From:   "Liam R. Howlett" <Liam.Howlett@...cle.com>
To:     maple-tree@...ts.infradead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...gle.com>, Song Liu <songliubraving@...com>,
        Davidlohr Bueso <dave@...olabs.net>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jerome Glisse <jglisse@...hat.com>,
        David Rientjes <rientjes@...gle.com>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Rik van Riel <riel@...riel.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH v2 33/70] arch/s390: Use maple tree iterators instead of linked list.

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
 arch/s390/mm/gmap.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c
index 64795d0349263..8f7ed79583b29 100644
--- a/arch/s390/mm/gmap.c
+++ b/arch/s390/mm/gmap.c
@@ -2502,8 +2502,9 @@ 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) {
+	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 +2572,9 @@ 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) {
+	mas_for_each(&mas, vma, ULONG_MAX) {
 		ret = ksm_madvise(vma, vma->vm_start, vma->vm_end,
 				  MADV_UNMERGEABLE, &vma->vm_flags);
 		if (ret)
-- 
2.28.0

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