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-rw-r--r--block/ioctl.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index ff241e663c01..8ba1ed8defd0 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -89,6 +89,8 @@ static int blkdev_reread_part(struct block_device *bdev, fmode_t mode)
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
+ if (bdev->bd_part_count)
+ return -EBUSY;
/*
* Reopen the device to revalidate the driver state and force a