* [PATCH] block: Add a check for fdisk
@ 2018-08-30 9:11 Su Hua
0 siblings, 0 replies; only message in thread
From: Su Hua @ 2018-08-30 9:11 UTC (permalink / raw)
To: axboe; +Cc: linux-block, linux-kernel, Su Hua
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@gmail.com>
---
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
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