From 82417d384ea5c55748a9cdc887fe4e5524c980a2 Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Wed, 13 Apr 2022 23:07:15 -0700 Subject: [PATCH] mm: optimize find_exact_vma() to use vma_lookup() Use vma_lookup() to walk the tree to the start value requested. If the vma at the start does not match, then the answer is NULL and there is no need to look at the next vma the way that find_vma() would. Signed-off-by: Liam R. Howlett Reviewed-by: Vlastimil Babka --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 8cafafaae5a1..02bd4390ca7b 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2857,7 +2857,7 @@ static inline unsigned long vma_pages(struct vm_area_struct *vma) static inline struct vm_area_struct *find_exact_vma(struct mm_struct *mm, unsigned long vm_start, unsigned long vm_end) { - struct vm_area_struct *vma = find_vma(mm, vm_start); + struct vm_area_struct *vma = vma_lookup(mm, vm_start); if (vma && (vma->vm_start != vm_start || vma->vm_end != vm_end)) vma = NULL; -- 2.50.1