commit ad945fc1da42965a31089d29de3754047861f348
author Alex Elder <elder@inktank.com> Fri Apr 26 15:44:36 2013 -0500
committer Sage Weil <sage@inktank.com> Wed May 01 21:19:54 2013 -0700
tree 359b8c20a5f7fb4adc8516d803b59b614fe7a9a6
parent b480815a17bc6bfe85d4931c53e5a8fded7f889e

rbd: fix rbd_dev_remove_parent()

In certain error paths, it is possible for an rbd device to have a
parent spec but no parent rbd_dev.  In rbd_dev_remove_parent() use
the parent field rather than parent_spec in determining whether to
try to remove any parent devices.  Use assertions to indicate that
any non-null parent pointer has parent_spec associated with it.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>