CONFIG_FS_IOMAP (not configurable)

modulename: iomap.ko

configname: CONFIG_FS_IOMAP

Linux Kernel Configuration
└─>File systems
└─>FS_IOMAP
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
fs/iomap.c
depends
CONFIG_BLOCK