On Wed, May 30, 2018 at 10:45:11AM -0600, kvigor@gmail.com wrote:

From: Kevin Vigor <redacted>

When a userspace client requests a NBD device be disconnected, the
DISCONNECT_REQUESTED flag is set. While this flag is set, the driver
will not inform userspace when a connection is closed.

Unfortunately the flag was never cleared, so once a disconnect was
requested the driver would thereafter never tell userspace about a
closed connection. Thus when connections failed due to timeout, no
attempt to reconnect was made and eventually the device would fail.

Fix by clearing the DISCONNECT_REQUESTED flag (and setting the
DISCONNECTED flag) once all connections are closed.

Changes relative to v1 (https://marc.info/?l=linux-block&m=152763540418902):

* remove pointless wake_up() -> wake_up_all() change.

Usually you want to put the changelog after the --- bit below so we can all see
it but it doesn't end up in the git changelog.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>

Thanks,

Josef