A future patch will call the bdev callback routine directly, rather
than deferring the callback routine to an event. So for these
tests we will no longer be able to free io channels in the context
of the callback routine - otherwise it will result in freeing
an NVMe I/O queue pair in the callback routine and then return
to the NVMe driver which will try to reference the now deleted
qpair.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I0e4dcc5d9c5a78e8b78a4147b430570fd140d478
d2ae4f0723