On Sun, Oct 29, 2023 at 06:14:28AM +0000, Yafang Shao wrote: > The root hasn't been removed from the root_list, so the list can't be NULL. > However, if it had been removed, attempting to destroy it once more is not > possible. Let's replace this with WARN_ON_ONCE() for clarity. > > Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> -- tejun