block: clarify badblocks lifetime

The badblocks list attached to a gendisk is allocated by the driver
which equates to the driver owning the lifetime of the object.  Do not
automatically free it in del_gendisk(). This is in preparation for
expanding the use of badblocks in libnvdimm drivers and introducing
devm_init_badblocks().

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 0 insertions, 5 deletions

diff --git a/block/genhd.c b/block/genhd.c
index f463c67e6ba2..aa38cd0a66c7 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -670,11 +670,6 @@ void del_gendisk(struct gendisk *disk)
         blk_unregister_queue(disk);
         blk_unregister_region(disk_devt(disk), disk->minors);
 
-        if (disk->bb) {
-                badblocks_exit(disk->bb);
-                kfree(disk->bb);
-        }
-
         part_stat_set_all(&disk->part0, 0);
         disk->part0.stamp = 0;