39 static void disk_check_events(struct disk_events *ev,
1422 	struct disk_events *ev = disk->ev;  in disk_events_poll_jiffies()  local
1430 	if (ev->poll_msecs >= 0)  in disk_events_poll_jiffies()
1431 		intv_msecs = ev->poll_msecs;  in disk_events_poll_jiffies()
1455 	struct disk_events *ev = disk->ev;  in disk_block_events()  local
1459 	if (!ev)  in disk_block_events()
1466 	mutex_lock(&ev->block_mutex);  in disk_block_events()
1468 	spin_lock_irqsave(&ev->lock, flags);  in disk_block_events()
1469 	cancel = !ev->block++;  in disk_block_events()
1470 	spin_unlock_irqrestore(&ev->lock, flags);  in disk_block_events()
1473 		cancel_delayed_work_sync(&disk->ev->dwork);  in disk_block_events()
1475 	mutex_unlock(&ev->block_mutex);  in disk_block_events()
1480 	struct disk_events *ev = disk->ev;  in __disk_unblock_events()  local
1484 	spin_lock_irqsave(&ev->lock, flags);  in __disk_unblock_events()
1486 	if (WARN_ON_ONCE(ev->block <= 0))  in __disk_unblock_events()
1489 	if (--ev->block)  in __disk_unblock_events()
1497 	set_timer_slack(&ev->dwork.timer, intv / 4);  in __disk_unblock_events()
1500 				&ev->dwork, 0);  in __disk_unblock_events()
1503 				&ev->dwork, intv);  in __disk_unblock_events()
1505 	spin_unlock_irqrestore(&ev->lock, flags);  in __disk_unblock_events()
1520 	if (disk->ev)  in disk_unblock_events()
1538 	struct disk_events *ev = disk->ev;  in disk_flush_events()  local
1540 	if (!ev)  in disk_flush_events()
1543 	spin_lock_irq(&ev->lock);  in disk_flush_events()
1544 	ev->clearing |= mask;  in disk_flush_events()
1545 	if (!ev->block)  in disk_flush_events()
1547 				&ev->dwork, 0);  in disk_flush_events()
1548 	spin_unlock_irq(&ev->lock);  in disk_flush_events()
1565 	struct disk_events *ev = disk->ev;  in disk_clear_events()  local
1569 	if (!ev) {  in disk_clear_events()
1584 	spin_lock_irq(&ev->lock);  in disk_clear_events()
1585 	clearing |= ev->clearing;  in disk_clear_events()
1586 	ev->clearing = 0;  in disk_clear_events()
1587 	spin_unlock_irq(&ev->lock);  in disk_clear_events()
1589 	disk_check_events(ev, &clearing);  in disk_clear_events()
1594 	__disk_unblock_events(disk, ev->clearing ? true : false);  in disk_clear_events()
1597 	spin_lock_irq(&ev->lock);  in disk_clear_events()
1598 	pending = ev->pending & mask;  in disk_clear_events()
1599 	ev->pending &= ~mask;  in disk_clear_events()
1600 	spin_unlock_irq(&ev->lock);  in disk_clear_events()
1613 	struct disk_events *ev = container_of(dwork, struct disk_events, dwork);  in disk_events_workfn()  local
1615 	disk_check_events(ev, &ev->clearing);  in disk_events_workfn()
1618 static void disk_check_events(struct disk_events *ev,  in disk_check_events()  argument
1621 	struct gendisk *disk = ev->disk;  in disk_check_events()
1632 	spin_lock_irq(&ev->lock);  in disk_check_events()
1634 	events &= ~ev->pending;  in disk_check_events()
1635 	ev->pending |= events;  in disk_check_events()
1639 	if (!ev->block && intv)  in disk_check_events()
1641 				&ev->dwork, intv);  in disk_check_events()
1643 	spin_unlock_irq(&ev->lock);  in disk_check_events()
1705 	return sprintf(buf, "%ld\n", disk->ev->poll_msecs);  in disk_events_poll_msecs_show()
1722 	disk->ev->poll_msecs = intv;  in disk_events_poll_msecs_store()
1750 	struct disk_events *ev;  in disk_events_set_dfl_poll_msecs()  local
1759 	list_for_each_entry(ev, &disk_events, node)  in disk_events_set_dfl_poll_msecs()
1760 		disk_flush_events(ev->disk, 0);  in disk_events_set_dfl_poll_msecs()
1783 	struct disk_events *ev;  in disk_alloc_events()  local
1788 	ev = kzalloc(sizeof(*ev), GFP_KERNEL);  in disk_alloc_events()
1789 	if (!ev) {  in disk_alloc_events()
1794 	INIT_LIST_HEAD(&ev->node);  in disk_alloc_events()
1795 	ev->disk = disk;  in disk_alloc_events()
1796 	spin_lock_init(&ev->lock);  in disk_alloc_events()
1797 	mutex_init(&ev->block_mutex);  in disk_alloc_events()
1798 	ev->block = 1;  in disk_alloc_events()
1799 	ev->poll_msecs = -1;  in disk_alloc_events()
1800 	INIT_DELAYED_WORK(&ev->dwork, disk_events_workfn);  in disk_alloc_events()
1802 	disk->ev = ev;  in disk_alloc_events()
1807 	if (!disk->ev)  in disk_add_events()
1816 	list_add_tail(&disk->ev->node, &disk_events);  in disk_add_events()
1828 	if (!disk->ev)  in disk_del_events()
1834 	list_del_init(&disk->ev->node);  in disk_del_events()
1843 	WARN_ON_ONCE(disk->ev && disk->ev->block != 1);  in disk_release_events()
1844 	kfree(disk->ev);  in disk_release_events()