Commit fe1f9e66 authored May 16, 2018 by Josef Bacik Committed by Jens Axboe May 16, 2018

nbd: fix how we set bd_invalidated



bd_invalidated is kind of a pain wrt partitions as it really only
triggers the partition rescan if it is set after bd_ops->open() runs, so
setting it when we reset the device isn't useful.  We also sporadically
would still have partitions left over in some disconnect cases, so fix
this by always setting bd_invalidated on open if there's no
configuration or if we've had a disconnect action happen, that way the
partition table gets invalidated and rescanned properly.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 96d97e17

drivers/block/nbd.c

+3 −4

Original line number	Diff line number	Diff line
		@@ -964,10 +964,6 @@ static void nbd_bdev_reset(struct block_device *bdev)
		if (bdev->bd_openers > 1)
		return;
		bd_set_size(bdev, 0);
		if (max_part > 0) {
		blkdev_reread_part(bdev);
		bdev->bd_invalidated = 1;
		}
		}

		static void nbd_parse_flags(struct nbd_device *nbd)
		@@ -1282,6 +1278,9 @@ static int nbd_open(struct block_device *bdev, fmode_t mode)
		refcount_set(&nbd->config_refs, 1);
		refcount_inc(&nbd->refs);
		mutex_unlock(&nbd->config_lock);
		bdev->bd_invalidated = 1;
		} else if (nbd_disconnected(nbd->config)) {
		bdev->bd_invalidated = 1;
		}
		out:
		mutex_unlock(&nbd_index_mutex);