to #26323588

commit ee594bfff389aa9105f713135211c0da736e5698 upstream.

identical logics in unlazy_walk() and unlazy_child()
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
Acked-by: NXiaoguang Wang <xiaoguang.wang@linux.alibaba.com>