config ZRAM tristate "Compressed RAM block device support" depends on BLOCK && SYSFS && ZSMALLOC select LZO_COMPRESS select LZO_DECOMPRESS default n help Creates virtual block devices called /dev/zramX (X = 0, 1, ...). Pages written to these disks are compressed and stored in memory itself. These disks allow very fast I/O and compression provides good amounts of memory savings. It has several use cases, for example: /tmp storage, use as swap disks and maybe many more. See zram.txt for more information. Project home: http://compcache.googlecode.com/ config ZRAM_DEBUG bool "Compressed RAM block device debug support" depends on ZRAM default n help This option adds additional debugging code to the compressed RAM block device driver.