From 9495dbdb42f5102fccca4f0247b2c4962c938cb3 Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Thu, 8 Apr 2021 16:15:00 -0400 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 --- 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 9d97a3579de8c..cb9f16ca62c02 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2883,7 +2883,7 @@ 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