linux-stable.git/drivers/staging/zcache, branch master

staging: zcache: delete it

2013-08-12T22:07:49+00:00

zcache is obsolete and not used anymore, Bob Liu has rewritten it and is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

Merge 3.11-rc5 into staging-next

2013-08-12T17:22:49+00:00

We want the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman

staging/zcache: Fix memory leak while dropping an o2net_sock_container object

2013-08-05T06:41:46+00:00

Free sc->sc_page when releasing a struct o2net_sock_container
object to avoid memory leaks.

This issue has been fixed by Younger Liu for OCFS2, so I sync
that patch to zcache as we share the same network code base.

Cc: Younger Liu 
Cc: Bob Liu 
Cc: Greg Kroah-Hartman 
Cc: Konrad Rzeszutek Wilk 
Signed-off-by: Jie Liu 
Signed-off-by: Greg Kroah-Hartman

staging: zcache: fix "zcache=" kernel parameter

2013-07-29T18:45:09+00:00

Commit 835f2f5 ("staging: zcache: enable zcache to be built/loaded as
a module") introduced an incorrect handling of "zcache=" parameter.

Inside zcache_comp_init() function, zcache_comp_name variable is
checked for being empty. If not empty, the above variable is tested
for being compatible with Crypto API. Unfortunately, after that
function ends unconditionally (by the "goto out" directive) and returns:
- non-zero value if verification succeeded, wrongly indicating an error
- zero value if verification failed, falsely informing that function
  zcache_comp_init() ended properly.

A solution to this problem is as following:
1. Move the "goto out" directive inside the "if (!ret)" statement
2. In case that crypto_has_comp() returned 0, change the value of ret
   to non-zero before "goto out" to indicate an error.

This patch replaces an earlier one from Michal Hocko (based on report
from Cristian Rodriguez):

	http://permalink.gmane.org/gmane.linux.kernel.mm/102484

It also addressed the same issue but didn't fix the zcache_comp_init()
for case when the compressor data passed to "zcache=" option was invalid
or unsupported.

Signed-off-by: Piotr Sarna 
[bzolnier: updated patch description]
Acked-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Kyungmin Park 
Acked-by: Konrad Rzeszutek Wilk 
Acked-by: Michal Hocko 
Cc: stable  # 3.10
Cc: Cristian Rodriguez 
Cc: Bob Liu 
Signed-off-by: Greg Kroah-Hartman

drivers: staging: zcache: fix compile error

2013-05-30T12:14:30+00:00

Fix below compile error:
drivers/built-in.o: In function `zcache_pampd_free':
>> zcache-main.c:(.text+0xb1c8a): undefined reference to `ramster_pampd_free'
>> zcache-main.c:(.text+0xb1cbc): undefined reference to `ramster_count_foreign_pages'
drivers/built-in.o: In function `zcache_pampd_get_data_and_free':
>> zcache-main.c:(.text+0xb1f05): undefined reference to `ramster_count_foreign_pages'
drivers/built-in.o: In function `zcache_cpu_notifier':
>> zcache-main.c:(.text+0xb228d): undefined reference to `ramster_cpu_up'
>> zcache-main.c:(.text+0xb2339): undefined reference to `ramster_cpu_down'
drivers/built-in.o: In function `zcache_pampd_create':
>> (.text+0xb26ce): undefined reference to `ramster_count_foreign_pages'
drivers/built-in.o: In function `zcache_pampd_create':
>> (.text+0xb27ef): undefined reference to `ramster_count_foreign_pages'
drivers/built-in.o: In function `zcache_put_page':
>> (.text+0xb299f): undefined reference to `ramster_do_preload_flnode'
drivers/built-in.o: In function `zcache_flush_page':
>> (.text+0xb2ea3): undefined reference to `ramster_do_preload_flnode'
drivers/built-in.o: In function `zcache_flush_object':
>> (.text+0xb307c): undefined reference to `ramster_do_preload_flnode'
drivers/built-in.o: In function `zcache_init':
>> zcache-main.c:(.text+0xb3629): undefined reference to `ramster_register_pamops'
>> zcache-main.c:(.text+0xb3868): undefined reference to `ramster_init'
>> drivers/built-in.o:(.rodata+0x15058): undefined reference to `ramster_foreign_eph_pages'
>> drivers/built-in.o:(.rodata+0x15078): undefined reference to `ramster_foreign_pers_pages'

Reported-by: Fengguang Wu 
Signed-off-by: Bob Liu 
Acked-by: Konrad Rzeszutek Wilk 
Signed-off-by: Greg Kroah-Hartman

staging: ramster: add how-to document

2013-05-20T15:21:04+00:00

Add how-to documentation that provides a step-by-step guide
for configuring and trying out a ramster cluster.

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

staging: zcache: Fix incorrect module_param_array types

2013-05-16T22:37:51+00:00

drivers/staging/zcache/zcache-main.c: In function ‘__check_disable_cleancache’:
drivers/staging/zcache/zcache-main.c:1928: warning: return from incompatible pointer type
drivers/staging/zcache/zcache-main.c: In function ‘__check_disable_frontswap’:
drivers/staging/zcache/zcache-main.c:1929: warning: return from incompatible pointer type
drivers/staging/zcache/zcache-main.c: In function ‘__check_disable_frontswap_ignore_nonactive’:
drivers/staging/zcache/zcache-main.c:1933: warning: return from incompatible pointer type

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Greg Kroah-Hartman

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

2013-05-01T00:04:01+00:00

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

2013-05-01T00:04:01+00:00

Enable module support for ramster.  Note runtime dependency disallows
loading if cleancache/frontswap lazy initialization patches are not
present.

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.

[v1: Fixed compile issues since ramster_init now has four arguments]
[v2: Fixed rebase on ramster->zcache move]
[akpm@linux-foundation.org: use_frontswap_selfshrink cannot be __initdata]
Signed-off-by: Dan Magenheimer 
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 
Cc: Wu Fengguang 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

zcache/tmem: Better error checking on frontswap_register_ops return value.

2013-05-01T00:04:01+00:00

In the past it either used to be NULL or the "older" backend. Now we
also return -Exx error codes.

Signed-off-by: Konrad Rzeszutek Wilk 
Signed-off-by: Bob Liu 
Cc: Wanpeng Li 
Cc: Andor Daam 
Cc: Dan Magenheimer 
Cc: Florian Schmaus 
Cc: Minchan Kim 
Cc: Stefan Hengelein 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds