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block: cleanup del_gendisk a bit

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Merge three hidden gendisk checks into one.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-10-29 15:58:24 +01:00 committed by Jens Axboe
parent a7cb3d2f09
commit 6b3ba9762f
1 changed files with 8 additions and 7 deletions
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15
block/genhd.c
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@ -895,6 +895,9 @@ void del_gendisk(struct gendisk *disk)
might_sleep();
if (WARN_ON_ONCE(!disk->queue))
return;
blk_integrity_del(disk);
disk_del_events(disk);
@ -917,20 +920,18 @@ void del_gendisk(struct gendisk *disk)
disk->flags &= ~GENHD_FL_UP;
up_write(&disk->lookup_sem);
if (!(disk->flags & GENHD_FL_HIDDEN))
if (!(disk->flags & GENHD_FL_HIDDEN)) {
sysfs_remove_link(&disk_to_dev(disk)->kobj, "bdi");
if (disk->queue) {
/*
* Unregister bdi before releasing device numbers (as they can
* get reused and we'd get clashes in sysfs).
*/
if (!(disk->flags & GENHD_FL_HIDDEN))
bdi_unregister(disk->queue->backing_dev_info);
blk_unregister_queue(disk);
} else {
WARN_ON(1);
bdi_unregister(disk->queue->backing_dev_info);
}
blk_unregister_queue(disk);
if (!(disk->flags & GENHD_FL_HIDDEN))
blk_unregister_region(disk_devt(disk), disk->minors);
/*