144 __btrfs_destroy_workqueue(struct __btrfs_workqueue *wq);
180 static inline void thresh_queue_hook(struct __btrfs_workqueue *wq)  in thresh_queue_hook()  argument
182 	if (wq->thresh == NO_THRESHOLD)  in thresh_queue_hook()
184 	atomic_inc(&wq->pending);  in thresh_queue_hook()
192 static inline void thresh_exec_hook(struct __btrfs_workqueue *wq)  in thresh_exec_hook()  argument
198 	if (wq->thresh == NO_THRESHOLD)  in thresh_exec_hook()
201 	atomic_dec(&wq->pending);  in thresh_exec_hook()
202 	spin_lock(&wq->thres_lock);  in thresh_exec_hook()
207 	wq->count++;  in thresh_exec_hook()
208 	wq->count %= (wq->thresh / 4);  in thresh_exec_hook()
209 	if (!wq->count)  in thresh_exec_hook()
211 	new_current_active = wq->current_active;  in thresh_exec_hook()
217 	pending = atomic_read(&wq->pending);  in thresh_exec_hook()
218 	if (pending > wq->thresh)  in thresh_exec_hook()
220 	if (pending < wq->thresh / 2)  in thresh_exec_hook()
222 	new_current_active = clamp_val(new_current_active, 1, wq->limit_active);  in thresh_exec_hook()
223 	if (new_current_active != wq->current_active)  {  in thresh_exec_hook()
225 		wq->current_active = new_current_active;  in thresh_exec_hook()
228 	spin_unlock(&wq->thres_lock);  in thresh_exec_hook()
231 		workqueue_set_max_active(wq->normal_wq, wq->current_active);  in thresh_exec_hook()
235 static void run_ordered_work(struct __btrfs_workqueue *wq)  in run_ordered_work()  argument
237 	struct list_head *list = &wq->ordered_list;  in run_ordered_work()
239 	spinlock_t *lock = &wq->list_lock;  in run_ordered_work()
280 	struct __btrfs_workqueue *wq;  in normal_work_helper()  local
293 	wq = work->wq;  in normal_work_helper()
296 	thresh_exec_hook(wq);  in normal_work_helper()
300 		run_ordered_work(wq);  in normal_work_helper()
319 static inline void __btrfs_queue_work(struct __btrfs_workqueue *wq,  in __btrfs_queue_work()  argument
324 	work->wq = wq;  in __btrfs_queue_work()
325 	thresh_queue_hook(wq);  in __btrfs_queue_work()
327 		spin_lock_irqsave(&wq->list_lock, flags);  in __btrfs_queue_work()
328 		list_add_tail(&work->ordered_list, &wq->ordered_list);  in __btrfs_queue_work()
329 		spin_unlock_irqrestore(&wq->list_lock, flags);  in __btrfs_queue_work()
332 	queue_work(wq->normal_wq, &work->normal_work);  in __btrfs_queue_work()
335 void btrfs_queue_work(struct btrfs_workqueue *wq,  in btrfs_queue_work()  argument
340 	if (test_bit(WORK_HIGH_PRIO_BIT, &work->flags) && wq->high)  in btrfs_queue_work()
341 		dest_wq = wq->high;  in btrfs_queue_work()
343 		dest_wq = wq->normal;  in btrfs_queue_work()
348 __btrfs_destroy_workqueue(struct __btrfs_workqueue *wq)  in __btrfs_destroy_workqueue()  argument
350 	destroy_workqueue(wq->normal_wq);  in __btrfs_destroy_workqueue()
351 	trace_btrfs_workqueue_destroy(wq);  in __btrfs_destroy_workqueue()
352 	kfree(wq);  in __btrfs_destroy_workqueue()
355 void btrfs_destroy_workqueue(struct btrfs_workqueue *wq)  in btrfs_destroy_workqueue()  argument
357 	if (!wq)  in btrfs_destroy_workqueue()
359 	if (wq->high)  in btrfs_destroy_workqueue()
360 		__btrfs_destroy_workqueue(wq->high);  in btrfs_destroy_workqueue()
361 	__btrfs_destroy_workqueue(wq->normal);  in btrfs_destroy_workqueue()
362 	kfree(wq);  in btrfs_destroy_workqueue()
365 void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int limit_active)  in btrfs_workqueue_set_max()  argument
367 	if (!wq)  in btrfs_workqueue_set_max()
369 	wq->normal->limit_active = limit_active;  in btrfs_workqueue_set_max()
370 	if (wq->high)  in btrfs_workqueue_set_max()
371 		wq->high->limit_active = limit_active;  in btrfs_workqueue_set_max()