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block: implement and use {disk|part}_to_dev()

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Implement {disk|part}_to_dev() and use them to access generic device
instead of directly dereferencing {disk|part}->dev.  To make sure no
user is left behind, rename generic devices fields to __dev.

This is in preparation of unifying partition 0 handling with other
partitions.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Tejun Heo
2008-08-25 19:56:05 +09:00
committed by Jens Axboe
parent 870d665612
commit ed9e198234
11 changed files with 86 additions and 77 deletions
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4
drivers/md/dm.c
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@@ -1186,7 +1186,7 @@ static void event_callback(void *context)
list_splice_init(&md->uevent_list, &uevents);
spin_unlock_irqrestore(&md->uevent_lock, flags);
dm_send_uevents(&uevents, &md->disk->dev.kobj);
dm_send_uevents(&uevents, &disk_to_dev(md->disk)->kobj);
atomic_inc(&md->event_nr);
wake_up(&md->eventq);
@@ -1643,7 +1643,7 @@ out:
*---------------------------------------------------------------*/
void dm_kobject_uevent(struct mapped_device *md)
{
kobject_uevent(&md->disk->dev.kobj, KOBJ_CHANGE);
kobject_uevent(&disk_to_dev(md->disk)->kobj, KOBJ_CHANGE);
}
uint32_t dm_next_uevent_seq(struct mapped_device *md)