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authorStefan Weinhuber <wein@de.ibm.com>2009-01-09 06:14:50 -0500
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-01-09 06:15:05 -0500
commit1301809bcee33c2153605b4387c57fab75f9800a (patch)
treeba532346e9c4e1700a2f6d80bf04accaf1cdeceb /drivers/s390/block/dasd.c
parentd41bf2f61d564b64aacdb58a911f99d4b413d492 (diff)
[S390] dasd: send change uevents for dasd block devices
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>
Diffstat (limited to 'drivers/s390/block/dasd.c')
-rw-r--r--drivers/s390/block/dasd.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 570ae59c1d5..bd591499414 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -336,6 +336,9 @@ static int
336dasd_state_ready_to_online(struct dasd_device * device) 336dasd_state_ready_to_online(struct dasd_device * device)
337{ 337{
338 int rc; 338 int rc;
339 struct gendisk *disk;
340 struct disk_part_iter piter;
341 struct hd_struct *part;
339 342
340 if (device->discipline->ready_to_online) { 343 if (device->discipline->ready_to_online) {
341 rc = device->discipline->ready_to_online(device); 344 rc = device->discipline->ready_to_online(device);
@@ -343,8 +346,14 @@ dasd_state_ready_to_online(struct dasd_device * device)
343 return rc; 346 return rc;
344 } 347 }
345 device->state = DASD_STATE_ONLINE; 348 device->state = DASD_STATE_ONLINE;
346 if (device->block) 349 if (device->block) {
347 dasd_schedule_block_bh(device->block); 350 dasd_schedule_block_bh(device->block);
351 disk = device->block->bdev->bd_disk;
352 disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0);
353 while ((part = disk_part_iter_next(&piter)))
354 kobject_uevent(&part_to_dev(part)->kobj, KOBJ_CHANGE);
355 disk_part_iter_exit(&piter);
356 }
348 return 0; 357 return 0;
349} 358}
350 359
@@ -354,6 +363,9 @@ dasd_state_ready_to_online(struct dasd_device * device)
354static int dasd_state_online_to_ready(struct dasd_device *device) 363static int dasd_state_online_to_ready(struct dasd_device *device)
355{ 364{
356 int rc; 365 int rc;
366 struct gendisk *disk;
367 struct disk_part_iter piter;
368 struct hd_struct *part;
357 369
358 if (device->discipline->online_to_ready) { 370 if (device->discipline->online_to_ready) {
359 rc = device->discipline->online_to_ready(device); 371 rc = device->discipline->online_to_ready(device);
@@ -361,6 +373,13 @@ static int dasd_state_online_to_ready(struct dasd_device *device)
361 return rc; 373 return rc;
362 } 374 }
363 device->state = DASD_STATE_READY; 375 device->state = DASD_STATE_READY;
376 if (device->block) {
377 disk = device->block->bdev->bd_disk;
378 disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0);
379 while ((part = disk_part_iter_next(&piter)))
380 kobject_uevent(&part_to_dev(part)->kobj, KOBJ_CHANGE);
381 disk_part_iter_exit(&piter);
382 }
364 return 0; 383 return 0;
365} 384}
366 385