kernfs_remove_by_name_ns
kernfs_remove_by_name_ns(parent, name, NULL);
kernfs_remove_by_name_ns(parent, attr->name, ns);
kernfs_remove_by_name_ns(kobj->sd, name, ns);
int kernfs_remove_by_name_ns(struct kernfs_node *parent, const char *name,
return kernfs_remove_by_name_ns(parent, name, NULL);