linux/drivers/staging/zcache/Kconfig, branch master

staging: zcache: delete it

2013-08-12T22:07:49Z

zcache is obsolete and not used anymore, Bob Liu has rewritten it and is submitting it for inclusion through the main -mm tree, as it should have been done in the first place... Cc: Bob Liu Cc: Konrad Rzeszutek Wilk Cc: Kyungmin Park Cc: Wanpeng Li Signed-off-by: Greg Kroah-Hartman

staging: zcache: enable zcache to be built/loaded as a module

2013-05-01T00:04:01Z

Allow zcache to be built/loaded as a module. Note runtime dependency disallows loading if cleancache/frontswap lazy initialization patches are not present. Zsmalloc support has not yet been merged into zcache but, once merged, could now easily be selected via a module_param. If built-in (not built as a module), the original mechanism of enabling via a kernel boot parameter is retained, but this should be considered deprecated. Note that module unload is explicitly not yet supported. Signed-off-by: Dan Magenheimer [v1: Rebased with different order of patches] [v2: Removed [CLEANCACHE|FRONTSWAP]_HAS_LAZY_INIT ifdef] [v3: Rebased on top of ramster->zcache move] [v4: Redid the Makefile] [v5: s/ZCACHE2/ZCACHE/] Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Bob Liu Cc: Wanpeng Li Cc: Andor Daam Cc: Florian Schmaus Cc: Minchan Kim Cc: Stefan Hengelein Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

staging: ramster/debug: Add CONFIG_RAMSTER_DEBUG Kconfig entry

2013-04-13T13:27:09Z

Add CONFIG_RAMSTER_DEBUG Kconfig entry. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li Signed-off-by: Greg Kroah-Hartman

Merge 3.9-rc5 into staging-next

2013-04-01T18:46:45Z

This pulls in all of the good fixes we need here. Signed-off-by: Greg Kroah-Hartman

staging: zcache: fix typo "64_BIT"

2013-03-18T23:04:03Z

Signed-off-by: Paul Bolle Signed-off-by: Greg Kroah-Hartman

staging: zcache/debug: compiler failure on PPC64 and revert commit.

2013-03-07T23:17:30Z

On PPC64 we get this: In file included from drivers/staging/zcache/debug.c:2: drivers/staging/zcache/debug.h: In function 'dec_zcache_obj_count': drivers/staging/zcache/debug.h:16: error: implicit declaration of function 'BUG_ON' This simple patch adds the appropiate header file to finish the compile and reverts "staging: zcache: disable ZCACHE_DEBUG due to build error" (5db5a20a50cfd078c78b13a988f237cca81aedc5) Reported-by: Stephen Rothwell Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Greg Kroah-Hartman

staging: zcache: disable ZCACHE_DEBUG due to build error

2013-03-06T00:42:52Z

In file included from drivers/staging/zcache/debug.c:2:0: drivers/staging/zcache/debug.h: In function 'dec_zcache_obj_count': drivers/staging/zcache/debug.h:16:2: error: implicit declaration of function 'BUG_ON' [-Werror=implicit-function-declaration] Signed-off-by: Stephen Rothwell Signed-off-by: Greg Kroah-Hartman

zcache/debug: Coalesce all debug under CONFIG_ZCACHE_DEBUG

2013-03-05T08:43:10Z

and also define this extra attribute in the Kconfig entry. Acked-by: Dan Magenheimer Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Greg Kroah-Hartman

staging/zcache: Fix/improve zcache writeback code, tie to a config option

2013-02-11T22:58:56Z

It was observed by Andrea Arcangeli in 2011 that zcache can get "full" and there must be some way for compressed swap pages to be (uncompressed and then) sent through to the backing swap disk. A prototype of this functionality, called "unuse", was added in 2012 as part of a major update to zcache (aka "zcache2"), but was left unfinished due to the unfortunate temporary fork of zcache. This earlier version of the code had an unresolved memory leak and was anyway dependent on not-yet-upstream frontswap and mm changes. The code was meanwhile adapted by Seth Jennings for similar functionality in zswap (which he calls "flush"). Seth also made some clever simplifications which are herein ported back to zcache. As a result of those simplifications, the frontswap changes are no longer necessary, but a slightly different (and simpler) set of mm changes are still required [1]. The memory leak is also fixed. Due to feedback from akpm in a zswap thread, this functionality in zcache has now been renamed from "unuse" to "writeback". Although this zcache writeback code now works, there are open questions as how best to handle the policy that drives it. As a result, this patch also ties writeback to a new config option. And, since the code still depends on not-yet-upstreamed mm patches, to avoid build problems, the config option added by this patch temporarily depends on "BROKEN"; this config dependency can be removed in trees that contain the necessary mm patches. [1] https://lkml.org/lkml/2013/1/29/540/ https://lkml.org/lkml/2013/1/29/539/ Signed-off-by: Dan Magenheimer Signed-off-by: Greg Kroah-Hartman

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

2013-01-18T21:43:44Z

[V2: no code changes, patchset now generated via git format-patch -M] In staging/zcache, adjust config/build due to ramster->zcache renaming Signed-off-by: Dan Magenheimer Signed-off-by: Greg Kroah-Hartman