From 3cb43f7870b990e38cb0f9d366d019cd7bb69bf3 Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Wed, 20 Jul 2022 02:17:50 +0000 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 07fcf63f9b01..d53d236f7869 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2842,7 +2842,7 @@ 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