From 77871c33c6927fd74f61fd9b110f61f006fafb99 Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Wed, 20 Jul 2022 02:17:59 +0000 Subject: [PATCH] mm/gup: use maple tree navigation instead of linked list Use find_vma_intersection() to locate the VMAs in __mm_populate() instead of using find_vma() and the linked list. Signed-off-by: Liam R. Howlett Reviewed-by: Davidlohr Bueso --- mm/gup.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/mm/gup.c b/mm/gup.c index 5aa7531a703bb..d54676448470b 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -1667,10 +1667,11 @@ int __mm_populate(unsigned long start, unsigned long len, int ignore_errors) if (!locked) { locked = 1; mmap_read_lock(mm); - vma = find_vma(mm, nstart); + vma = find_vma_intersection(mm, nstart, end); } else if (nstart >= vma->vm_end) - vma = vma->vm_next; - if (!vma || vma->vm_start >= end) + vma = find_vma_intersection(mm, vma->vm_end, end); + + if (!vma) break; /* * Set [nstart; nend) to intersection of desired address -- 2.50.1