1 files changed, 4 insertions, 8 deletions

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 6d5b213b8a9b..6d720243f5f4 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -334,6 +334,7 @@ void delete_partition(struct gendisk *disk, int partno)
 
         blk_free_devt(part_devt(part));
         rcu_assign_pointer(ptbl->part[partno], NULL);
+        rcu_assign_pointer(ptbl->last_lookup, NULL);
         kobject_put(part->holder_dir);
         device_del(part_to_dev(part));
 
@@ -384,9 +385,9 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno,
 
         dname = dev_name(ddev);
         if (isdigit(dname[strlen(dname) - 1]))
-                snprintf(pdev->bus_id, BUS_ID_SIZE, "%sp%d", dname, partno);
+                dev_set_name(pdev, "%sp%d", dname, partno);
         else
-                snprintf(pdev->bus_id, BUS_ID_SIZE, "%s%d", dname, partno);
+                dev_set_name(pdev, "%s%d", dname, partno);
 
         device_initialize(pdev);
         pdev->class = &block_class;
@@ -447,16 +448,11 @@ void register_disk(struct gendisk *disk)
         struct block_device *bdev;
         struct disk_part_iter piter;
         struct hd_struct *part;
-        char *s;
         int err;
 
         ddev->parent = disk->driverfs_dev;
 
-        strlcpy(ddev->bus_id, disk->disk_name, BUS_ID_SIZE);
-        /* ewww... some of these buggers have / in the name... */
-        s = strchr(ddev->bus_id, '/');
-        if (s)
-                *s = '!';
+        dev_set_name(ddev, disk->disk_name);
 
         /* delay uevents, until we scanned partition table */
         ddev->uevent_suppress = 1;