userfaultfd: use helper function range_in_vma()
We can use range_in_vma() to check if dst_start, dst_start + len are within the dst_vma range. Minor readability improvement. Link: https://lkml.kernel.org/r/20230417003919.930515-1-zhangpeng362@huawei.comSigned-off-by:ZhangPeng <zhangpeng362@huawei.com> Reviewed-by:
David Hildenbrand <david@redhat.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Nanyong Sun <sunnanyong@huawei.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org>
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