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; /* -- 2.25.1
