From d7c62295570f012e1d386ae6ed472b36baf037ad Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Tue, 6 Sep 2022 19:48:51 +0000 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. Link: https://lkml.kernel.org/r/20220906194824.2110408-27-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Vlastimil Babka Tested-by: Yu Zhao Cc: Catalin Marinas Cc: David Hildenbrand Cc: David Howells Cc: Davidlohr Bueso Cc: SeongJae Park Cc: Sven Schnelle Cc: Will Deacon Signed-off-by: Andrew Morton --- 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 06a6b8db75b7c..49a58807719b1 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2795,12 +2795,7 @@ 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) -- 2.30.2