[PATCH v4 15/66] mm: Convert vma_lookup() to use the Maple Tree
From: Liam Howlett <hidden>
Date: 2021-12-01 14:33:56
Also in:
lkml
Subsystem:
memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Unlike the rbtree, the Maple Tree will return a NULL if there's nothing at a particular address. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Liam R. Howlett <redacted> --- 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 4d5ab70b1f6d..c28bd97a4ecd 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h@@ -2845,12 +2845,7 @@ 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