On Tue, Dec 14, 2021 at 09:13:10AM +0800, Ming Lei wrote: > > Wouldn't it make more sense to simply not call wbt_enable_default from > > elv_unregister_queue? > > wbt_disable_default() is called in bfq_init_root_group(), so wbt_enable_default s/bfq_init_root_group/bfq_init_queue/ But yes, that sounds like an even better idea. Or maybe even an elevator feature flag.