drivers/block/zram/Kconfig

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.

config ZRAM_LZ4_COMPRESS
	bool "Enable LZ4 algorithm support"
	depends on ZRAM
	select LZ4_COMPRESS
	select LZ4_DECOMPRESS
	default n
	help
	  This option enables LZ4 compression algorithm support. Compression
	  algorithm can be changed using `comp_algorithm' device attribute.

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.