Enable support to track FC I/O Traffic across cgroup applications

modulename: blk-cgroup-fc-appid.ko

configname: CONFIG_BLK_CGROUP_FC_APPID

Linux Kernel Configuration
└─>Enable the block layer
└─>Enable support to track FC I/O Traffic across cgroup applications
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Enabling this option enables the support to track FC I/O traffic across
cgroup applications. It enables the Fabric and the storage targets to
identify, monitor, and handle FC traffic based on VM tags by inserting
application specific identification into the FC frame.

source code:
depends
CONFIG_BLK_CGROUP
CONFIG_BLOCK
CONFIG_NVME_FC