So far this global variable is just for tracking purpose.
Would like to remove it by now and if needed for other
usage, we can have it there later.
Change-Id: I2d1f36de46acc47bcf9ce841c0b234be40b0263c
Signed-off-by: GangCao <gang.cao@intel.com>
Reviewed-on: https://review.gerrithub.io/429185
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>