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Linux/drivers/block/zram/Kconfig

  1 config ZRAM
  2         tristate "Compressed RAM block device support"
  3         depends on BLOCK && SYSFS && ZSMALLOC
  4         select LZO_COMPRESS
  5         select LZO_DECOMPRESS
  6         default n
  7         help
  8           Creates virtual block devices called /dev/zramX (X = 0, 1, ...).
  9           Pages written to these disks are compressed and stored in memory
 10           itself. These disks allow very fast I/O and compression provides
 11           good amounts of memory savings.
 12 
 13           It has several use cases, for example: /tmp storage, use as swap
 14           disks and maybe many more.
 15 
 16           See zram.txt for more information.
 17 
 18 config ZRAM_LZ4_COMPRESS
 19         bool "Enable LZ4 algorithm support"
 20         depends on ZRAM
 21         select LZ4_COMPRESS
 22         select LZ4_DECOMPRESS
 23         default n
 24         help
 25           This option enables LZ4 compression algorithm support. Compression
 26           algorithm can be changed using `comp_algorithm' device attribute.
 27 
 28 config ZRAM_DEBUG
 29         bool "Compressed RAM block device debug support"
 30         depends on ZRAM
 31         default n
 32         help
 33           This option adds additional debugging code to the compressed
 34           RAM block device driver.

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