Stop doing a pile of work related to debugging messages when
the ft_debug_logging flag is not set. Use unlikely to add the
check in a way that the check can be inlined without inlining the
whole thing.
Signed-off-by: NMark Rustad <mark.d.rustad@intel.com>
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>