From: Josef Bacik jbacik@fb.com

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: 29eaadc ("nbd: stop using the bdev everywhere") cc: stable@vger.kernel.org Signed-off-by: Josef Bacik jbacik@fb.com --- drivers/block/nbd.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index b709abf3cb79..64278f472efe 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -234,9 +234,18 @@ static void nbd_size_clear(struct nbd_device *nbd) static void nbd_size_update(struct nbd_device *nbd) { struct nbd_config *config = nbd->config; + struct block_device *bdev = bdget_disk(nbd->disk, 0); + blk_queue_logical_block_size(nbd->disk->queue, config->blksize); blk_queue_physical_block_size(nbd->disk->queue, config->blksize); set_capacity(nbd->disk, config->bytesize >> 9); + if (bdev) { + if (bdev->bd_disk) + bd_set_size(bdev, config->bytesize); + else + bdev->bd_invalidated = 1; + bdput(bdev); + } kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE); }

@@ -1114,7 +1123,6 @@ static int nbd_start_device_ioctl(struct nbd_device *nbd, struct block_device *b if (ret) return ret;

- bd_set_size(bdev, config->bytesize); if (max_part) bdev->bd_invalidated = 1; mutex_unlock(&nbd->config_lock);