diff mbox series

[03/19] block: cleanup del_gendisk a bit

Message ID 20200903080119.441674-4-hch@lst.de
State Not Applicable
Delegated to: David Miller
Headers show
Series [01/19] char_dev: replace cdev_map with an xarray | expand

Commit Message

Christoph Hellwig Sept. 3, 2020, 8:01 a.m. UTC 
Merge three hidden gendisk checks into one.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 block/genhd.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

Comments

Hannes Reinecke Sept. 4, 2020, 10:18 a.m. UTC | #1 
On 9/3/20 10:01 AM, Christoph Hellwig wrote:
> Merge three hidden gendisk checks into one.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>   block/genhd.c | 15 ++++++++-------
>   1 file changed, 8 insertions(+), 7 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
diff mbox series

Patch

diff --git a/block/genhd.c b/block/genhd.c
index 44f69f4b2c5aa6..ec9b64207d9c2e 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -948,6 +948,9 @@  void del_gendisk(struct gendisk *disk)
 
 	might_sleep();
 
+	if (WARN_ON_ONCE(!disk->queue))
+		return;
+
 	blk_integrity_del(disk);
 	disk_del_events(disk);
 
@@ -970,20 +973,18 @@  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);
 	/*