This patch removes legacy config support in null bdev module.
All options through the legacy config are already reflected in JSON.
While here, added allocation failure check for g_null_read_buf.
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: I59a28a402e0c61e5636da623bc109e15b36f0584
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4626
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2eda3fa095