When a block device is acquired in the form of FMODE_EXCL, I think it should not be allowed to perform partition operations, similar to when mount is executed. Signed-off-by: Su Hua <suhua.tanke@xxxxxxxxx> --- block/partition-generic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/partition-generic.c b/block/partition-generic.c index 5a8975a..a8daa31 100644 --- a/block/partition-generic.c +++ b/block/partition-generic.c @@ -440,7 +440,7 @@ static int drop_partitions(struct gendisk *disk, struct block_device *bdev) struct hd_struct *part; int res; - if (bdev->bd_part_count || bdev->bd_super) + if (bdev->bd_part_count || bdev->bd_super || bdev->bd_holders) return -EBUSY; res = invalidate_partition(disk, 0); if (res) -- 2.7.4
