From a5fcd2d27b200772755e9839a23ebd5ffbf3f7da Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Wed, 13 Apr 2022 23:07:16 -0700 Subject: [PATCH] mm: convert vma_lookup() to use mtree_load() Unlike the rbtree, the Maple Tree will return a NULL if there's nothing at a particular address. Since the previous commit dropped the vmacache, it is now possible to consult the tree directly. Signed-off-by: Liam R. Howlett Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Vlastimil Babka --- include/linux/mm.h | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 3790470e5902..c69ad2ed4816 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2800,12 +2800,7 @@ struct vm_area_struct *find_vma_intersection(struct mm_struct *mm, static inline struct vm_area_struct *vma_lookup(struct mm_struct *mm, unsigned long addr) { - struct vm_area_struct *vma = find_vma(mm, addr); - - if (vma && addr < vma->vm_start) - vma = NULL; - - return vma; + return mtree_load(&mm->mm_mt, addr); } static inline unsigned long vm_start_gap(struct vm_area_struct *vma) -- 2.50.1