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[S390] dasd: send change uevents for dasd block devices

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When a DASD device enters or leaves the 'online' state we need to
trigger change events for the respective disk and partitions.
These extra events are needed because when disk and partitions are
first added, udev rules that try to read disk labels or other data
may fail as the disk may not yet be ready.

Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Stefan Weinhuber 2009-01-09 12:14:50 +01:00 committed by Martin Schwidefsky
parent d41bf2f61d
commit 1301809bce
1 changed files with 20 additions and 1 deletions
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21
drivers/s390/block/dasd.c
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@ -336,6 +336,9 @@ static int
dasd_state_ready_to_online(struct dasd_device * device)
{
int rc;
struct gendisk *disk;
struct disk_part_iter piter;
struct hd_struct *part;
if (device->discipline->ready_to_online) {
rc = device->discipline->ready_to_online(device);
@ -343,8 +346,14 @@ dasd_state_ready_to_online(struct dasd_device * device)
return rc;
}
device->state = DASD_STATE_ONLINE;
if (device->block)
if (device->block) {
dasd_schedule_block_bh(device->block);
disk = device->block->bdev->bd_disk;
disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0);
while ((part = disk_part_iter_next(&piter)))
kobject_uevent(&part_to_dev(part)->kobj, KOBJ_CHANGE);
disk_part_iter_exit(&piter);
}
return 0;
}
@ -354,6 +363,9 @@ dasd_state_ready_to_online(struct dasd_device * device)
static int dasd_state_online_to_ready(struct dasd_device *device)
{
int rc;
struct gendisk *disk;
struct disk_part_iter piter;
struct hd_struct *part;
if (device->discipline->online_to_ready) {
rc = device->discipline->online_to_ready(device);
@ -361,6 +373,13 @@ static int dasd_state_online_to_ready(struct dasd_device *device)
return rc;
}
device->state = DASD_STATE_READY;
if (device->block) {
disk = device->block->bdev->bd_disk;
disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0);
while ((part = disk_part_iter_next(&piter)))
kobject_uevent(&part_to_dev(part)->kobj, KOBJ_CHANGE);
disk_part_iter_exit(&piter);
}
return 0;
}