staging: zcache: adjustments to config/build files due to renaming

[cascardo/linux.git] / drivers / staging / zcache / Kconfig

diff --git a/drivers/staging/zcache/Kconfig b/drivers/staging/zcache/Kconfig
index 4881839..c1dbd04 100644 (file)
--- a/drivers/staging/zcache/Kconfig
+++ b/drivers/staging/zcache/Kconfig
@@ -1,6 +1,6 @@
 config ZCACHE
        bool "Dynamic compression of swap pages and clean pagecache pages"
-       depends on (CLEANCACHE || FRONTSWAP) && CRYPTO=y && ZSMALLOC=y
+       depends on CRYPTO=y && SWAP=y && CLEANCACHE && FRONTSWAP
        select CRYPTO_LZO
        default n
        help
@@ -9,3 +9,18 @@ config ZCACHE
          compression and an in-kernel implementation of transcendent
          memory to store clean page cache pages and swap in RAM,
          providing a noticeable reduction in disk I/O.
+
+config RAMSTER
+       bool "Cross-machine RAM capacity sharing, aka peer-to-peer tmem"
+       depends on CONFIGFS_FS=y && SYSFS=y && !HIGHMEM && ZCACHE=y
+       depends on NET
+       # must ensure struct page is 8-byte aligned
+       select HAVE_ALIGNED_STRUCT_PAGE if !64_BIT
+       default n
+       help
+         RAMster allows RAM on other machines in a cluster to be utilized
+         dynamically and symmetrically instead of swapping to a local swap
+         disk, thus improving performance on memory-constrained workloads
+         while minimizing total RAM across the cluster.  RAMster, like
+         zcache2, compresses swap pages into local RAM, but then remotifies
+         the compressed pages to another node in the RAMster cluster.