Hello, On Fri, Aug 22, 2025 at 04:22:09PM +0800, Julian Sun wrote: > +struct wb_wait_queue_head { > + wait_queue_head_t waitq; > + wb_wait_wakeup_func_t wb_wakeup_func; > +}; wait_queue_head_t itself already allows overriding the wakeup function. Please look for init_wait_func() usages in the tree. Hopefully, that should contain the changes within memcg. Thanks. -- tejun