nbd: use bd_set_size when updating disk size
When we stopped relying on the bdev everywhere I broke updating the block device size on the fly, which ceph relies on. We can't just do set_capacity, we also have to do bd_set_size so things like parted will notice the device size change. Fixes: 29eaadc0 ("nbd: stop using the bdev everywhere") cc: stable@vger.kernel.org Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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