Commit 68e6582e authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

block: return -EBUSY when there are open partitions in blkdev_reread_part 



The switch to go through blkdev_get_by_dev means we now ignore the
return value from bdev_disk_changed in __blkdev_get.  Add a manual
check to restore the old semantics.

Fixes: 4601b4b1 ("block: reopen the device in blkdev_reread_part")
Reported-by: default avatarKarel Zak <kzak@redhat.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210421160502.447418-1-hch@lst.de


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent f06c6096

block/ioctl.c

+2 −0
Original line number Diff line number Diff line
@@ -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