| From | Liam Howlett <> | Subject | [PATCH v9 21/69] mm/khugepaged: optimize collapse_pte_mapped_thp() by using vma_lookup() | Date | Wed, 4 May 2022 01:13:51 +0000 |
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From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
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 <Liam.Howlett@Oracle.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> --- mm/khugepaged.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index ac53ad2c9bb1..03fda93ade3e 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; -- 2.35.1
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