CONFIG_SG_POOL (not configurable)

modulename: sg_pool.ko

configname: CONFIG_SG_POOL

Linux Kernel Configuration
└─>Library routines
└─>SG_POOL
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Provides a helper to allocate chained scatterlists. This should be
selected by a driver or an API which whishes to allocate chained
scatterlist.

source code:
lib/sg_pool.c