ping?
On Sat, Apr 04, 2020 at 08:51:20AM +0200, Christoph Hellwig wrote:
> bd_super is only set by get_tree_bdev and mount_bdev, and thus not by
> other openers like btrfs or the XFS realtime and log devices, as well as
> block devices directly opened from user space. Check bd_openers
> instead.
>
> Fixes: 77032ca66f86 ("Return EBUSY from BLKRRPART for mounted whole-dev fs")
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
> block/partitions/core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/block/partitions/core.c b/block/partitions/core.c
> index b79c4513629b..1a0a829d8416 100644
> --- a/block/partitions/core.c
> +++ b/block/partitions/core.c
> @@ -496,7 +496,7 @@ int blk_drop_partitions(struct gendisk *disk, struct block_device *bdev)
>
> if (!disk_part_scan_enabled(disk))
> return 0;
> - if (bdev->bd_part_count || bdev->bd_super)
> + if (bdev->bd_part_count || bdev->bd_openers)
> return -EBUSY;
> res = invalidate_partition(disk, 0);
> if (res)
> --
> 2.25.1
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