Merge tag 'wq-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

Pull workqueue updates from Tejun Heo:

 - Rescuer affinity management: Affinity is now updated only when
   detached using wq_unbound_cpumask consistently. DISASSOCIATED workers
   also follow unbound cpumask changes to avoid breaking CPU isolation

 - Rescuer cleanups preparing for fetching work items one by one from
   pool list: Work assignment factored out, optimized to skip pwqs no
   longer needing rescue, and shutdown logic simplified

 - Unused assert_rcu_or_wq_mutex_or_pool_mutex() removed

* tag 'wq-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Don't rely on wq->rescuer to stop rescuer
  workqueue: Only assign rescuer work when really needed
  workqueue: Factor out assign_rescuer_work()
  workqueue: Init rescuer's affinities as wq_unbound_cpumask
  workqueue: Let DISASSOCIATED workers follow unbound wq cpumask changes
  workqueue: Update the rescuer's affinity only when it is detached
  workqueue: Remove unused assert_rcu_or_wq_mutex_or_pool_mutex