[PATCH v2 28/61] arch/s390: Use maple tree iterators instead of linked list.
From: Liam Howlett <hidden>
Date: 2021-08-17 15:53:10
Also in:
lkml
Subsystem:
s390 architecture, the rest · Maintainers:
Heiko Carstens, Vasily Gorbik, Alexander Gordeev, Linus Torvalds
From: "Liam R. Howlett" <redacted> Signed-off-by: Liam R. Howlett <redacted> --- arch/s390/mm/gmap.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
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)
--
2.30.2