CONFIG_BLK_DEV_BSG_COMMON (not configurable)

modulename: bsg.ko

configname: CONFIG_BLK_DEV_BSG_COMMON

Linux Kernel Configuration
└─>Enable the block layer
└─>BLK_DEV_BSG_COMMON
In linux kernel since version 5.2 (release Date: 2019-07-07)  
source code:
block/bsg.c
depends
CONFIG_BLOCK