N:1 compression allocator (zsmalloc)

modulename: zsmalloc.ko

configname: CONFIG_ZSMALLOC

Linux Kernel Configuration
└─>Memory Management options
└─>N:1 compression allocator (zsmalloc)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
zsmalloc is a slab-based memory allocator designed to store
pages of various compression levels efficiently. It achieves
the highest storage density with the least amount of fragmentation.

source code:
depends
CONFIG_MMU

is selected by
CONFIG_ZSMALLOC_STAT

is depended by
CONFIG_ZRAM