40 static void disk_check_events(struct disk_events *ev,
1428 	struct disk_events *ev = disk->ev;  in disk_events_poll_jiffies()  local
1436 	if (ev->poll_msecs >= 0)  in disk_events_poll_jiffies()
1437 		intv_msecs = ev->poll_msecs;  in disk_events_poll_jiffies()
1461 	struct disk_events *ev = disk->ev;  in disk_block_events()  local
1465 	if (!ev)  in disk_block_events()
1472 	mutex_lock(&ev->block_mutex);  in disk_block_events()
1474 	spin_lock_irqsave(&ev->lock, flags);  in disk_block_events()
1475 	cancel = !ev->block++;  in disk_block_events()
1476 	spin_unlock_irqrestore(&ev->lock, flags);  in disk_block_events()
1479 		cancel_delayed_work_sync(&disk->ev->dwork);  in disk_block_events()
1481 	mutex_unlock(&ev->block_mutex);  in disk_block_events()
1486 	struct disk_events *ev = disk->ev;  in __disk_unblock_events()  local
1490 	spin_lock_irqsave(&ev->lock, flags);  in __disk_unblock_events()
1492 	if (WARN_ON_ONCE(ev->block <= 0))  in __disk_unblock_events()
1495 	if (--ev->block)  in __disk_unblock_events()
1503 	set_timer_slack(&ev->dwork.timer, intv / 4);  in __disk_unblock_events()
1506 				&ev->dwork, 0);  in __disk_unblock_events()
1509 				&ev->dwork, intv);  in __disk_unblock_events()
1511 	spin_unlock_irqrestore(&ev->lock, flags);  in __disk_unblock_events()
1526 	if (disk->ev)  in disk_unblock_events()
1544 	struct disk_events *ev = disk->ev;  in disk_flush_events()  local
1546 	if (!ev)  in disk_flush_events()
1549 	spin_lock_irq(&ev->lock);  in disk_flush_events()
1550 	ev->clearing |= mask;  in disk_flush_events()
1551 	if (!ev->block)  in disk_flush_events()
1553 				&ev->dwork, 0);  in disk_flush_events()
1554 	spin_unlock_irq(&ev->lock);  in disk_flush_events()
1571 	struct disk_events *ev = disk->ev;  in disk_clear_events()  local
1575 	if (!ev) {  in disk_clear_events()
1590 	spin_lock_irq(&ev->lock);  in disk_clear_events()
1591 	clearing |= ev->clearing;  in disk_clear_events()
1592 	ev->clearing = 0;  in disk_clear_events()
1593 	spin_unlock_irq(&ev->lock);  in disk_clear_events()
1595 	disk_check_events(ev, &clearing);  in disk_clear_events()
1600 	__disk_unblock_events(disk, ev->clearing ? true : false);  in disk_clear_events()
1603 	spin_lock_irq(&ev->lock);  in disk_clear_events()
1604 	pending = ev->pending & mask;  in disk_clear_events()
1605 	ev->pending &= ~mask;  in disk_clear_events()
1606 	spin_unlock_irq(&ev->lock);  in disk_clear_events()
1619 	struct disk_events *ev = container_of(dwork, struct disk_events, dwork);  in disk_events_workfn()  local
1621 	disk_check_events(ev, &ev->clearing);  in disk_events_workfn()
1624 static void disk_check_events(struct disk_events *ev,  in disk_check_events()  argument
1627 	struct gendisk *disk = ev->disk;  in disk_check_events()
1638 	spin_lock_irq(&ev->lock);  in disk_check_events()
1640 	events &= ~ev->pending;  in disk_check_events()
1641 	ev->pending |= events;  in disk_check_events()
1645 	if (!ev->block && intv)  in disk_check_events()
1647 				&ev->dwork, intv);  in disk_check_events()
1649 	spin_unlock_irq(&ev->lock);  in disk_check_events()
1711 	return sprintf(buf, "%ld\n", disk->ev->poll_msecs);  in disk_events_poll_msecs_show()
1728 	disk->ev->poll_msecs = intv;  in disk_events_poll_msecs_store()
1756 	struct disk_events *ev;  in disk_events_set_dfl_poll_msecs()  local
1765 	list_for_each_entry(ev, &disk_events, node)  in disk_events_set_dfl_poll_msecs()
1766 		disk_flush_events(ev->disk, 0);  in disk_events_set_dfl_poll_msecs()
1789 	struct disk_events *ev;  in disk_alloc_events()  local
1794 	ev = kzalloc(sizeof(*ev), GFP_KERNEL);  in disk_alloc_events()
1795 	if (!ev) {  in disk_alloc_events()
1800 	INIT_LIST_HEAD(&ev->node);  in disk_alloc_events()
1801 	ev->disk = disk;  in disk_alloc_events()
1802 	spin_lock_init(&ev->lock);  in disk_alloc_events()
1803 	mutex_init(&ev->block_mutex);  in disk_alloc_events()
1804 	ev->block = 1;  in disk_alloc_events()
1805 	ev->poll_msecs = -1;  in disk_alloc_events()
1806 	INIT_DELAYED_WORK(&ev->dwork, disk_events_workfn);  in disk_alloc_events()
1808 	disk->ev = ev;  in disk_alloc_events()
1813 	if (!disk->ev)  in disk_add_events()
1822 	list_add_tail(&disk->ev->node, &disk_events);  in disk_add_events()
1834 	if (!disk->ev)  in disk_del_events()
1840 	list_del_init(&disk->ev->node);  in disk_del_events()
1849 	WARN_ON_ONCE(disk->ev && disk->ev->block != 1);  in disk_release_events()
1850 	kfree(disk->ev);  in disk_release_events()