lookup_noperm
ret = lookup_noperm(&QSTR(buf), dentry->d_parent);
sdentry = lookup_noperm(&QSTR(silly), dentry->d_parent);
EXPORT_SYMBOL(lookup_noperm);
sdentry = lookup_noperm(&QSTR(silly), dentry->d_parent);
sdentry = lookup_noperm(&QSTR(name), dentry->d_parent);
extern struct dentry *lookup_noperm(struct qstr *, struct dentry *);