Commit 306b0c95 authored by Nitin Gupta's avatar Nitin Gupta Committed by Greg Kroah-Hartman
Browse files

Staging: virtual block device driver (ramzswap) 



Creates RAM based block devices (/dev/ramzswapX) which can be
used (only) as swap disks. Pages swapped to these are compressed
and stored in memory itself.

The module is called ramzswap.ko. It depends on:
 - xvmalloc memory allocator (compiled with this driver)
 - lzo_compress.ko
 - lzo_decompress.ko

See ramzswap.txt for usage details.

Signed-off-by: default avatarNitin Gupta <ngupta@vflare.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 644bf7b5

drivers/staging/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -123,6 +123,8 @@ source "drivers/staging/sep/Kconfig" 


source "drivers/staging/iio/Kconfig"



source "drivers/staging/ramzswap/Kconfig"



source "drivers/staging/strip/Kconfig"



source "drivers/staging/arlan/Kconfig"

drivers/staging/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ obj-$(CONFIG_VME_BUS) += vme/ 
obj-$(CONFIG_RAR_REGISTER)	+= rar/

obj-$(CONFIG_DX_SEP)		+= sep/

obj-$(CONFIG_IIO)		+= iio/

obj-$(CONFIG_RAMZSWAP)		+= ramzswap/

obj-$(CONFIG_STRIP)		+= strip/

obj-$(CONFIG_ARLAN)		+= arlan/

obj-$(CONFIG_WAVELAN)		+= wavelan/

drivers/staging/ramzswap/Kconfig

0 → 100644
+21 −0
Original line number Diff line number Diff line 
config RAMZSWAP

	tristate "Compressed in-memory swap device (ramzswap)"

	depends on SWAP

	select LZO_COMPRESS

	select LZO_DECOMPRESS

	default n

	help

	  Creates virtual block devices which can be used (only) as a swap

	  disks. Pages swapped to these disks are compressed and stored in

	  memory itself.



	  See ramzswap.txt for more information.

	  Project home: http://compcache.googlecode.com/



config RAMZSWAP_STATS

	bool "Enable ramzswap stats"

	depends on RAMZSWAP

	default y

	help

	  Enable statistics collection for ramzswap. This adds only a minimal

	  overhead. In unsure, say Y.

drivers/staging/ramzswap/Makefile

0 → 100644
+3 −0
Original line number Diff line number Diff line 
ramzswap-objs	:=	ramzswap_drv.o xvmalloc.o



obj-$(CONFIG_RAMZSWAP)	+=	ramzswap.o

drivers/staging/ramzswap/ramzswap_drv.c

0 → 100644
+1435 −0

File added.

Preview size limit exceeded, changes collapsed.