When read is split, only secondary tasks are submitted. Hence we can
copy the failure status directly among secondary tasks and primary
task now.
Additionally, improve the comment in the source code to make us easier
to understand.
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I857711dfaf90515231048f8c31c9273eac854d28
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6343
Reviewed-by: Ziye Yang <ziye.yang@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
5ddf6f7671