From c11947ac5b00f355796cf199ba01fdfc56020b47 Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Mon, 4 Jan 2021 14:56:20 -0500 Subject: [PATCH] mm/gup: Use maple tree navigation instead of linked list Signed-off-by: Liam R. Howlett --- mm/gup.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/mm/gup.c b/mm/gup.c index 7a406d79bd2e..cc3089effbe4 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -1581,7 +1581,6 @@ int __mm_populate(unsigned long start, unsigned long len, int ignore_errors) long ret = 0; end = start + len; - for (nstart = start; nstart < end; nstart = nend) { /* * We want to fault in pages for [nstart; end) address range. @@ -1590,10 +1589,10 @@ 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, start, end); } else if (nstart >= vma->vm_end) - vma = vma->vm_next; - if (!vma || vma->vm_start >= end) + vma = vma_next(mm, vma); + if (!vma) break; /* * Set [nstart; nend) to intersection of desired address -- 2.50.1