2:1 compression allocator (zbud)
modulename: zbud.ko
configname: CONFIG_ZBUD
Linux Kernel Configuration
└─>Memory Management options
└─>2:1 compression allocator (zbud)
In linux kernel since version 3.10 (release Date: 2013-06-30)
A special purpose allocator for storing compressed pages.
It is designed to store up to two compressed pages per physical
page. While this design limits storage density, it has simple and
deterministic reclaim properties that make it preferable to a higher
density approach when reclaim will be used.
It is designed to store up to two compressed pages per physical
page. While this design limits storage density, it has simple and
deterministic reclaim properties that make it preferable to a higher
density approach when reclaim will be used.