TCM/IBLOCK Subsystem Plugin for Linux/BLOCK

modulename: target_core_iblock.ko

configname: CONFIG_TCM_IBLOCK

Linux Kernel Configuration
└─>Device Drivers
└─>Generic Target Core Mod (TCM) and ConfigFS Infrastructure
└─>TCM/IBLOCK Subsystem Plugin for Linux/BLOCK
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
Say Y here to enable the TCM/IBLOCK subsystem plugin for non-buffered
access to Linux/Block devices using BIO

source code:
drivers/target/target_core_iblock.c