writeback: Do not sort b_io list only because of block device inode

It is very likely that block device inode will be part of BDI dirty list
as well. However it doesn't make sence to sort inodes on the b_io list
just because of this inode (as it contains buffers all over the device
anyway). So save some CPU cycles which is valuable since we hold relatively
contented wb->list_lock.

Signed-off-by: Jan Kara <jack@suse.cz>
mm/slub: remove 'per_cpu' which is useless variable

Remove 'per_cpu', since it is useless now after the patch: "205ab99
slub: Update statistics handling for variable order slabs". And the
partial list is handled in the same way as the per cpu slab.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
mm/slub: beautify code for 80 column limitation and tab alignment

Be sure of 80 column limitation for both code and comments.

Correct tab alignment for 'if-else' statement.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
slub: don't use cpu partial pages on UP

cpu partial pages are used to avoid contention which does not exist in
the UP case. So let SLUB_CPU_PARTIAL depend on SMP.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
slub: Remove unnecessary page NULL check

In commit 4d7868e6(slub: Do not dereference NULL pointer in node_match)
had added check for page NULL in node_match.  Thus, it is not needed
to check it before node_match, remove it.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Libin <huawei.libin@huawei.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
mm/slub.c: beautify code for removing redundancy 'break' statement.

Remove redundancy 'break' statement.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
mm, slab_common: add 'unlikely' to size check of kmalloc_slab()

Size is usually below than KMALLOC_MAX_SIZE.
If we add a 'unlikely' macro, compiler can make better code.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
mm/sl[aou]b: Move kmallocXXX functions to common code

The kmalloc* functions of all slab allcoators are similar now so
lets move them into slab.h. This requires some function naming changes
in slob.

As a results of this patch there is a common set of functions for
all allocators. Also means that kmalloc_large() is now available
in general to perform large order allocations that go directly
via the page allocator. kmalloc_large() can be substituted if
kmalloc() throws warnings because of too large allocations.

kmalloc_large() has exactly the same semantics as kmalloc but
can only used for allocations > PAGE_SIZE.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
slub: remove verify_mem_not_deleted()

I do not see any user for this code in the tree.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
slab: Use correct GFP_DMA constant

On Thu, 5 Sep 2013, kbuild test robot wrote:
> >> include/linux/slab.h:433:53: sparse: restricted gfp_t degrades to integer
>    429	static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
>    430	{
>    431	#ifndef CONFIG_SLOB
>    432		if (__builtin_constant_p(size) &&
>  > 433			size <= KMALLOC_MAX_CACHE_SIZE && !(flags & SLAB_CACHE_DMA)) {
>    434			int i = kmalloc_index(size);
>    435

flags is of type gfp_t and not a slab internal flag. Therefore
use GFP_DMA.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
thinkpad_acpi: return -NODEV while operating uninitialized LEDs

Not all 0-15 LEDs are available for all models, sometimes it's even not
safe. This patch return -NODEV while operating uninitialized LEDs.

Signed-off-by: Adam Lee <adam.lee@canonical.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
thinkpad_acpi: add the ability setting TPACPI_LED_NONE by quirk

Some new Lenovo or ThinkPad laptops don't have EC controllable LEDs,
their LED quirks are 0. This patch set led_supported=TPACPI_LED_NONE
when quirk equals 0.

Signed-off-by: Adam Lee <adam.lee@canonical.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
platform samsung-q10: use ACPI instead of direct EC calls

This patch changes the Samsung Q10 backlight driver to use ACPI methods
(the same ones as triggered by the brightness up/down function keys)
instead of direct EC calls. The advantage is that the brightness setting
is not lost on shutdown.

Signed-off-by: Frederick van der Wyck <fvanderwyck@gmail.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
x86: smartconnect: use module_acpi_driver to simplify the code

module_acpi_driver() makes the code simpler by eliminating
boilerplate code.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
x86: irst: use module_acpi_driver to simplify the code

module_acpi_driver() makes the code simpler by eliminating
boilerplate code.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
platform: replace strict_strto*() with kstrto*()

The usage of strict_strtoul() and strict_strtol() is not preferred,
because strict_strtoul() and strict_strtol() are obsolete. Thus,
kstrtoul() and kstrtol() should be used.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
hp_wmi: Fix unregister order in hp_wmi_rfkill_setup()

Register order is:
			wifi
			bluetooth
			wwan
			gps

So unregister order must be:
			gps
			wwan
			bluetiith
			wifi

But currently gps and wwan are swapped. Fix that.
Also fix goto links.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
wmi: parse_wdg() should return kernel error codes

The current code returns a mix of acpi_status and kernel error codes.
It should just return kernel error codes.  There are already error paths
in this function which return -ENOMEM and that's what the caller
expects.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
amilo-rfkill: Enable using amilo-rfkill with the FSC Amilo L1310.

This change extends the amilo_rfkill_id_table[] with the DMI_BOARD_NAME information of the Amilo L1310, so that the wifi device can be switched on.

Signed-off-by: Jerome Meinke <meinkej@informatik.uni-freiburg.de>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
platform: x86: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>