On 17.04.23 02:39, Peng Zhang wrote:
From: ZhangPeng <zhangpeng362@xxxxxxxxxx>
We could use range_in_vma() to check if dst_start, dst_start + len are
within the dst_vma range. Minor readability improvement.
Signed-off-by: ZhangPeng <zhangpeng362@xxxxxxxxxx>
---
mm/userfaultfd.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c
index 11cfd82c6726..e97a0b4889fc 100644
--- a/mm/userfaultfd.c
+++ b/mm/userfaultfd.c
@@ -31,11 +31,7 @@ struct vm_area_struct *find_dst_vma(struct mm_struct *dst_mm,
struct vm_area_struct *dst_vma;
dst_vma = find_vma(dst_mm, dst_start);
- if (!dst_vma)
- return NULL;
-
- if (dst_start < dst_vma->vm_start ||
- dst_start + len > dst_vma->vm_end)
+ if (!range_in_vma(dst_vma, dst_start, dst_start + len))
return NULL;
/*
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
--
Thanks,
David / dhildenb
