linux.git/drivers/staging/zcache, branch v3.1-rc2

zcache: Fix build error when sysfs is not defined

2011-08-08T19:05:35+00:00

Signed-off-by: Nitin Gupta 
Signed-off-by: Greg Kroah-Hartman

zcache: Use div_u64 for 64-bit division

2011-08-08T19:05:34+00:00

xv_get_total_size_bytes returns a u64 value and it's used in a division.
This causes build failures in 32-bit architectures, as reported by Randy
Dunlap.

Reported-by: Randy Dunlap 
Signed-off-by: Thadeu Lima de Souza Cascardo 
Cc: Stephen Rothwell 
Cc: Dan Magenheimer 
Cc: Nitin Gupta 
Acked-by: Randy Dunlap 
Signed-off-by: Greg Kroah-Hartman

staging: zcache: include module.h for MODULE_LICENSE

2011-08-03T14:25:49+00:00

The oncoming cleanup of module.h usage requires the explicit inclusion
of module.h when it was otherwise being included indirectly. Otherwise,
building zcache will fail.

Reported-by: Stephen Rothwell 
Signed-off-by: Thadeu Lima de Souza Cascardo 
Signed-off-by: Greg Kroah-Hartman

staging: zcache: module is GPL

2011-08-02T23:06:18+00:00

This avoids tainting the kernel as if a proprietary module was loaded.
The kernel will still be tainted because this is a staging driver.

Signed-off-by: Thadeu Lima de Souza Cascardo 
Signed-off-by: Greg Kroah-Hartman

staging: fix zcache building

2011-08-02T23:06:18+00:00

zcache is only building tmem.c and not building zcache.c. To keep the
module name, zcache.c must be renamed if symbols from tmem.c are to
remain unexported.

Signed-off-by: Thadeu Lima de Souza Cascardo 
Acked-by: Dan Magenheimer 
Signed-off-by: Greg Kroah-Hartman

staging: zcache: support multiple clients, prep for KVM and RAMster

2011-07-08T21:18:53+00:00

This is version 3 of an update to zcache, incorporating feedback from the list.
This patch adds support to the in-kernel transcendent memory ("tmem") code
and the zcache driver for multiple clients, which will be needed for both
RAMster and KVM support.  It also adds additional tmem callbacks to support
RAMster and corresponding no-op stubs in the zcache driver.  In v2, I've
also taken the liberty of adding some additional sysfs variables to
both surface information and allow policy control.  Those experimenting
with zcache should find them useful.  V3 clarifies some code walking
and declaring arrays.

Signed-off-by: Dan Magenheimer 

[v3: error27@gmail.com: fix array bounds/walking]
[v2: konrad.wilk@oracle.com: fix bools, add check for NULL, fix a comment]
[v2: sjenning@linux.vnet.ibm.com: add info/tunables for poor compression]
[v2: marcusklemm@googlemail.com: add tunable for max persistent pages]
Acked-by: Dan Carpenter 
Cc: Nitin Gupta 
Cc: linux-mm@kvack.org
Cc: kvm@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman

vmscan: change shrinker API by passing shrink_control struct

2011-05-25T15:39:26+00:00

Change each shrinker's API by consolidating the existing parameters into
shrink_control struct.  This will simplify any further features added w/o
touching each file of shrinker.

[akpm@linux-foundation.org: fix build]
[akpm@linux-foundation.org: fix warning]
[kosaki.motohiro@jp.fujitsu.com: fix up new shrinker API]
[akpm@linux-foundation.org: fix xfs warning]
[akpm@linux-foundation.org: update gfs2]
Signed-off-by: Ying Han 
Cc: KOSAKI Motohiro 
Cc: Minchan Kim 
Acked-by: Pavel Emelyanov 
Cc: KAMEZAWA Hiroyuki 
Cc: Mel Gorman 
Acked-by: Rik van Riel 
Cc: Johannes Weiner 
Cc: Hugh Dickins 
Cc: Dave Hansen 
Cc: Steven Whitehouse 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

staging: Allow sharing xvmalloc for zram and zcache

2011-02-23T22:02:56+00:00

Both zram and zcache use xvmalloc allocator. If xvmalloc
is compiled separately for both of them, we will get linker
error if they are both selected as "built-in". We can also
get linker error regarding missing xvmalloc symbols if zram
is not built.

So, we now compile xvmalloc separately and export its symbols
which are then used by both of zram and zcache.

Signed-off-by: Nitin Gupta 
Acked-by: Randy Dunlap 
Signed-off-by: Greg Kroah-Hartman

staging: zcache: fix memory leak

2011-02-18T21:24:53+00:00

obj is not freed if __get_free_page() failed.

Signed-off-by: Vasiliy Kulikov 
Signed-off-by: Greg Kroah-Hartman

staging: zcache: misc build/config

2011-02-09T23:08:22+00:00

[PATCH V2 3/3] drivers/staging: zcache: misc build/config

Makefiles and Kconfigs to build zcache in drivers/staging

There is a dependency on xvmalloc.* which in 2.6.37 resides
in drivers/staging/zram.  Should this move or disappear,
some Makefile/Kconfig changes will be required.

Signed-off-by: Dan Magenheimer 
Signed-off-by: Nitin Gupta 
Signed-off-by: Greg Kroah-Hartman