mainline inclusion
from mainline-5.1-rc1
commit 5837f625
category: bugfix
bugzilla: NA
CVE: NA

https://gitee.com/openeuler/kernel/issues/I1CYGS?from=project-issue
---------------------------

Fix some indentation issues with the iunlink functions and reorganize
the tops of the functions to be identical.  No functional changes.
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: NBrian Foster <bfoster@redhat.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NYu Kuai <yukuai3@huawei.com>
Reviewed-by: Nzhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>