autofs: use IS_ROOT to replace root dentry checks
autofs: use IS_ROOT to replace root dentry checks

Use the helper macro !IS_ROOT to replace parent != dentry->d_parent.  Just
clean up.

Signed-off-by: Rui Xiang <7510c11ed4d45beb000097fa9c56f5a59a5bb490@huawei.com>
Signed-off-by: Ian Kent <0efec51fd7cf517793321ec68fd852811537b69c@themaw.net>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs