Comment 2 for bug 1819504

We have confirmed that the patchwork.kernel.org patch originally requested was not the right one.

This set of four patches from mainline (applied to bionic) supplies the needed functionality, and a test backport to bionic has been confirmed to work as expected:

bdaeedc1bea9 scsi: tcmu: add module wide block/reset_netlink support
9de3a1ef032a scsi: tcmu: simplify nl interface
3228691ffec1 scsi: tcmu: track nl commands
0297e962907d scsi: tcmu: delete unused __wait