diff --git a/block/ioctl.c b/block/ioctl.c
index a31d91d..8b78b5a 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -155,7 +155,7 @@ static int blkdev_reread_part(struct block_device *bdev)
 	struct gendisk *disk = bdev->bd_disk;
 	int res;
 
-	if (!disk_part_scan_enabled(disk) || bdev != bdev->bd_contains)
+	if (bdev != bdev->bd_contains)
 		return -EINVAL;
 	if (!capable(CAP_SYS_ADMIN))
 		return -EACCES;
diff --git a/block/partition-generic.c b/block/partition-generic.c
index 1cb4dec..0e7d637 100644
--- a/block/partition-generic.c
+++ b/block/partition-generic.c
@@ -430,6 +430,15 @@ rescan:
 		disk->fops->revalidate_disk(disk);
 	check_disk_size_change(disk, bdev);
 	bdev->bd_invalidated = 0;
+
+	/*
+	 * If partition scanning is disabled, we are done.
+	 */
+	if (!disk_part_scan_enabled(disk)) {
+		kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE);
+		return 0;
+	}
+
 	if (!get_capacity(disk) || !(state = check_partition(disk, bdev)))
 		return 0;
 	if (IS_ERR(state)) {
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 8bc6d39..326fac9 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1039,11 +1039,9 @@ static int loop_clr_fd(struct loop_device *lo)
 	lo->lo_state = Lo_unbound;
 	/* This is safe: open() is still holding a reference. */
 	module_put(THIS_MODULE);
-	if (lo->lo_flags & LO_FLAGS_PARTSCAN && bdev)
-		ioctl_by_bdev(bdev, BLKRRPART, 0);
+	lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN;
+	ioctl_by_bdev(bdev, BLKRRPART, 0);
 	lo->lo_flags = 0;
-	if (!part_shift)
-		lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN;
 	mutex_unlock(&lo->lo_ctl_mutex);
 	/*
 	 * Need not hold lo_ctl_mutex to fput backing file.