1config ZRAM 2 tristate "Compressed RAM block device support" 3 depends on BLOCK && SYSFS && ZSMALLOC && CRYPTO 4 select CRYPTO_LZO 5 default n 6 help 7 Creates virtual block devices called /dev/zramX (X = 0, 1, ...). 8 Pages written to these disks are compressed and stored in memory 9 itself. These disks allow very fast I/O and compression provides 10 good amounts of memory savings. 11 12 It has several use cases, for example: /tmp storage, use as swap 13 disks and maybe many more. 14 15 See zram.txt for more information. 16