From fafca048cea5cd6697b7f6feb43e1bad21e53e0f Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Wed, 13 Apr 2022 23:07:15 -0700 Subject: [PATCH] mm/khugepaged: optimize collapse_pte_mapped_thp() by using vma_lookup() vma_lookup() will walk the vma tree once and not continue to look for the next vma. Since the exact vma is checked below, this is a more optimal way of searching. Signed-off-by: Liam R. Howlett Reviewed-by: Vlastimil Babka --- mm/khugepaged.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 9bb32fb7ec74..2f6e4d6ffb79 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1435,7 +1435,7 @@ static void collapse_and_free_pmd(struct mm_struct *mm, struct vm_area_struct *v void collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr) { unsigned long haddr = addr & HPAGE_PMD_MASK; - struct vm_area_struct *vma = find_vma(mm, haddr); + struct vm_area_struct *vma = vma_lookup(mm, haddr); struct page *hpage; pte_t *start_pte, *pte; pmd_t *pmd; -- 2.50.1