block: refine the disk_live check in del_gendisk

hidden gendisks will never be marked live. Fixes: 40b3a52 ("block: add a sanity check for a live disk in del_gendisk") Reported-by: Bruno Goncalves <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jens Axboe <[email protected]>
ambv · Aug 24, 2021 · 9f28699 · 9f28699
1 parent 1743fa5
commit 9f28699
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/block/genhd.c b/block/genhd.c
@@ -556,7 +556,7 @@ void del_gendisk(struct gendisk *disk)
 {
 	might_sleep();
 
-	if (WARN_ON_ONCE(!disk_live(disk)))
+	if (WARN_ON_ONCE(!disk_live(disk) && !(disk->flags & GENHD_FL_HIDDEN)))
 		return;
 
 	blk_integrity_del(disk);