43 	struct disk_events *ev = disk->ev;  in disk_events_poll_jiffies()  local
50 	if (ev->poll_msecs >= 0)  in disk_events_poll_jiffies()
51 		intv_msecs = ev->poll_msecs;  in disk_events_poll_jiffies()
75 	struct disk_events *ev = disk->ev;  in disk_block_events()  local
79 	if (!ev)  in disk_block_events()
86 	mutex_lock(&ev->block_mutex);  in disk_block_events()
88 	spin_lock_irqsave(&ev->lock, flags);  in disk_block_events()
89 	cancel = !ev->block++;  in disk_block_events()
90 	spin_unlock_irqrestore(&ev->lock, flags);  in disk_block_events()
93 		cancel_delayed_work_sync(&disk->ev->dwork);  in disk_block_events()
95 	mutex_unlock(&ev->block_mutex);  in disk_block_events()
100 	struct disk_events *ev = disk->ev;  in __disk_unblock_events()  local
104 	spin_lock_irqsave(&ev->lock, flags);  in __disk_unblock_events()
106 	if (WARN_ON_ONCE(ev->block <= 0))  in __disk_unblock_events()
109 	if (--ev->block)  in __disk_unblock_events()
115 				&ev->dwork, 0);  in __disk_unblock_events()
118 				&ev->dwork, intv);  in __disk_unblock_events()
120 	spin_unlock_irqrestore(&ev->lock, flags);  in __disk_unblock_events()
135 	if (disk->ev)  in disk_unblock_events()
153 	struct disk_events *ev = disk->ev;  in disk_flush_events()  local
155 	if (!ev)  in disk_flush_events()
158 	spin_lock_irq(&ev->lock);  in disk_flush_events()
159 	ev->clearing |= mask;  in disk_flush_events()
160 	if (!ev->block)  in disk_flush_events()
162 				&ev->dwork, 0);  in disk_flush_events()
163 	spin_unlock_irq(&ev->lock);  in disk_flush_events()
184 static void disk_check_events(struct disk_events *ev,  in disk_check_events()  argument
187 	struct gendisk *disk = ev->disk;  in disk_check_events()
196 	spin_lock_irq(&ev->lock);  in disk_check_events()
198 	events &= ~ev->pending;  in disk_check_events()
199 	ev->pending |= events;  in disk_check_events()
203 	if (!ev->block && intv)  in disk_check_events()
205 				&ev->dwork, intv);  in disk_check_events()
207 	spin_unlock_irq(&ev->lock);  in disk_check_events()
229 	struct disk_events *ev = disk->ev;  in disk_clear_events()  local
233 	if (!ev)  in disk_clear_events()
243 	spin_lock_irq(&ev->lock);  in disk_clear_events()
244 	clearing |= ev->clearing;  in disk_clear_events()
245 	ev->clearing = 0;  in disk_clear_events()
246 	spin_unlock_irq(&ev->lock);  in disk_clear_events()
248 	disk_check_events(ev, &clearing);  in disk_clear_events()
253 	__disk_unblock_events(disk, ev->clearing ? true : false);  in disk_clear_events()
256 	spin_lock_irq(&ev->lock);  in disk_clear_events()
257 	pending = ev->pending & mask;  in disk_clear_events()
258 	ev->pending &= ~mask;  in disk_clear_events()
259 	spin_unlock_irq(&ev->lock);  in disk_clear_events()
314 	struct disk_events *ev = container_of(dwork, struct disk_events, dwork);  in disk_events_workfn()  local
316 	disk_check_events(ev, &ev->clearing);  in disk_events_workfn()
367 	if (!disk->ev)  in disk_events_poll_msecs_show()
369 	return sprintf(buf, "%ld\n", disk->ev->poll_msecs);  in disk_events_poll_msecs_show()
385 	if (!disk->ev)  in disk_events_poll_msecs_store()
389 	disk->ev->poll_msecs = intv;  in disk_events_poll_msecs_store()
408 	struct disk_events *ev;  in disk_events_set_dfl_poll_msecs()  local
416 	list_for_each_entry(ev, &disk_events, node)  in disk_events_set_dfl_poll_msecs()
417 		disk_flush_events(ev->disk, 0);  in disk_events_set_dfl_poll_msecs()
438 	struct disk_events *ev;  in disk_alloc_events()  local
443 	ev = kzalloc(sizeof(*ev), GFP_KERNEL);  in disk_alloc_events()
444 	if (!ev) {  in disk_alloc_events()
449 	INIT_LIST_HEAD(&ev->node);  in disk_alloc_events()
450 	ev->disk = disk;  in disk_alloc_events()
451 	spin_lock_init(&ev->lock);  in disk_alloc_events()
452 	mutex_init(&ev->block_mutex);  in disk_alloc_events()
453 	ev->block = 1;  in disk_alloc_events()
454 	ev->poll_msecs = -1;  in disk_alloc_events()
455 	INIT_DELAYED_WORK(&ev->dwork, disk_events_workfn);  in disk_alloc_events()
457 	disk->ev = ev;  in disk_alloc_events()
463 	if (!disk->ev)  in disk_add_events()
467 	list_add_tail(&disk->ev->node, &disk_events);  in disk_add_events()
479 	if (disk->ev) {  in disk_del_events()
483 		list_del_init(&disk->ev->node);  in disk_del_events()
491 	WARN_ON_ONCE(disk->ev && disk->ev->block != 1);  in disk_release_events()
492 	kfree(disk->ev);  in disk_release_events()