[PATCH] block: Add a check for fdisk
From: Su Hua <hidden>
Date: 2018-08-30 09:12:21
Also in:
lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
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 <redacted> --- 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