diff mbox series

[v6,28/71] mm: Convert vma_lookup() to use mtree_load()

Message ID 20220215144241.3812052-28-Liam.Howlett@oracle.com (mailing list archive)
State New
Headers show
Series Introducing the Maple Tree | expand

Commit Message

Liam R. Howlett Feb. 15, 2022, 2:43 p.m. UTC 
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.

Since the previous commit dropped the vmacache, it is now possible to
consult the tree directly.

Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
 include/linux/mm.h | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 72654108380e..c57d23b9564c 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2802,12 +2802,7 @@  extern 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)