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Date: Tue, 5 Oct 2021 01:30:48 +0000 From: Liam Howlett <liam.howlett@...cle.com> To: "maple-tree@...ts.infradead.org" <maple-tree@...ts.infradead.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, David Hildenbrand <david@...hat.com>, Douglas Gilbert <dgilbert@...erlog.com> CC: Song Liu <songliubraving@...com>, Davidlohr Bueso <dave@...olabs.net>, "Paul E . McKenney" <paulmck@...nel.org>, Matthew Wilcox <willy@...radead.org>, 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 v3 29/66] arch/s390: Use maple tree iterators instead of linked list. From: "Liam R. Howlett" <Liam.Howlett@...cle.com> Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com> --- 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 4d3b33ce81c6..fdf7f1d17549 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -2501,8 +2501,10 @@ 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); @@ -2570,8 +2572,10 @@ 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
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