pdev->dev.platform_data is not initialized if match is true in function
sdhci_pxav3_probe. Just local variable pdata is assigned the return value
from function pxav3_get_mmc_pdata().

static int sdhci_pxav3_probe(struct platform_device *pdev) {

    struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
    ...
    if (match) {
		ret = mmc_of_parse(host->mmc);
		if (ret)
			goto err_of_parse;
		sdhci_get_of_property(pdev);
		pdata = pxav3_get_mmc_pdata(dev);
     }
     ...
}
Signed-off-by: Jingju Hou <houjingj@marvell.com>
Fixes: b650352d("mmc: sdhci-pxa: Add device tree support")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

It's not supported by driver anymore after using runtime pm
and there's no user of it, so delete it now.
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

After commit 8d86e4fc ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()"),
it's not used anymore.
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

After commit 8d86e4fc ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()"),
we do not need those duplicated parsing anymore.

Note: fsl,cd-controller is also deleted due to the driver does
not support controller card detection anymore after switch to runtime pm.
And there's no user of it right now in device tree.

wp-gpios is kept because we're still support fsl,wp-controller,
so we need a way to check if it's gpio wp or controller wp.
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Device tree provides option to specify the max freqency with property
"max-frequency" in dts and common parse function mmc_of_parse() will
parse it and use this value to set host->f_max to tell the MMC core
the maxinum frequency the host works.

However, current sdhci driver will finally overwrite this value with
host->max_clk regardless of the max-frequency property.

This patch makes sure not overwrite the max-frequency set from device
tree and do basic sanity check.
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

This is an incremental fix of commit
e62bd351b("mmc: sdhci-esdhc-imx: Do not break platform data boards").

After commit 8d86e4fc ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()"),
we do not need to run the check of boarddata->wp_type/cd_type/max_bus_width
again for dt platform since those are already handled by mmc_of_parse().

Current code only exclude the checking of wp_type for dt platform which
does not make sense.

This patch moves all non dt probe code into one function.
Besides, since we only support SD3.0/eMMC HS200 for dt platform, the
support_vsel checking and ultra high speed pinctrl state are also merged
into sdhci_esdhc_imx_probe_dt.

Then we have two separately probe function for dt and non dt type.
This can make the driver probe more clearly.
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Current card detect probe process is that when driver finds a valid
ESDHC_CD_GPIO, it will clear the quirk SDHCI_QUIRK_BROKEN_CARD_DETECTION
which is set by default for all esdhc/usdhc controllers.
Then host driver will know there's a valid card detect function.

Commit 8d86e4fc ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()")
breaks GPIO CD function for dt platform that it will return directly
when find ESDHC_CD_GPIO for dt platform which result in the later wrongly
to keep SDHCI_QUIRK_BROKEN_CARD_DETECTION for all dt platforms.
Then MMC_CAP_NEEDS_POLL will be used instead even there's a valid
GPIO card detect.

This patch adds back this function and follows the original approach to
clear the quirk if find an valid CD GPIO for dt platforms.

Fixes: 8d86e4fc ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()")
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Reviewed-by: Johan Derycke <johan.derycke@barco.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Support for 8BIT bus with was added some time ago to sdhci-esdhc but
then missed to remove the 8BIT from the reserved bit mask which made
8BIT non functional.

Fixes: 66b50a00 ("mmc: esdhc: Add support for 8-bit bus width and..")
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Enclosing mmc_blk_put() is missing in power_ro_lock_show() sysfs handler,
let's add it.

Fixes: add710ea ("mmc: boot partition ro lock support")
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

If NO_DMA=y:

    ERROR: "dma_alloc_coherent" [drivers/mmc/host/mtk-sd.ko] undefined!
    ERROR: "dma_unmap_sg" [drivers/mmc/host/mtk-sd.ko] undefined!
    ERROR: "dma_map_sg" [drivers/mmc/host/mtk-sd.ko] undefined!
    ERROR: "dma_free_coherent" [drivers/mmc/host/mtk-sd.ko] undefined!

Add a dependency on HAS_DMA to fix this.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

We should not call dma_free_coherent if host->adma_table is NULL,
otherwise may trigger panic.

Fixes: d1e49f77 ("mmc: sdhci: convert ADMA descriptors to a...")
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Sometimes BADA, DEB or CEB error interrupts occur when sd card is
unplugged during data transfer. These interrupts are currently ignored
by the interrupt handler. But, this results in card not being
recognised on subsequent insertion. This is because mmcqd is waiting
forever for the data transfer(for which error occurred) to complete.
Fix this, by reporting BADA, DEB, CEB errors to mmc-core as -EILSEQ, so
that the core can do appropriate handling.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

DTO/DCRC errors were not being informed to the mmc core since
commit ae4bf788 ("mmc: omap_hsmmc: consolidate error report handling of
HSMMC IRQ"). This commit made sure 'end_trans' is never set on DTO/DCRC
errors. This is because after this commit 'host->data' is checked after
it has been cleared to NULL by omap_hsmmc_dma_cleanup().

Because 'end_trans' is never set, omap_hsmmc_xfer_done() is never invoked
making core layer not to be aware of DTO/DCRC errors. Because of this
any command invoked after DTO/DCRC error leads to a hang.

Fix this by checking for 'host->data' before it is actually cleared.

Fixes: ae4bf788 ("mmc: omap_hsmmc: consolidate error report handling of
HSMMC IRQ")

CC: stable@vger.kernel.org
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Pull SCSI fixes from James Bottomley:
 "Two fairly simple fixes: one is a change that causes us to have a very
  low queue depth leading to performance issues and the other is a null
  deref occasionally in tapes thanks to use after put"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: fix host max depth checking for the 'queue_depth' sysfs interface
  st: null pointer dereference panic caused by use after kref_put by st_open

Pull MIPS fixes from Ralf Baechle:
 "Another round of MIPS fixes for 4.2.

  Things are looking quite decent at this stage but the recent work on
  the FPU support took its toll:

   - fix an incorrect overly restrictive ifdef

   - select O32 64-bit FP support for O32 binary compatibility

   - remove workarounds for Sibyte SB1250 Pass1 parts.  There are rare
     fixing the workarounds is not worth the effort.

   - patch up an outdated and now incorrect comment"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: fpu.h: Allow 64-bit FPU on a 64-bit MIPS R6 CPU
  MIPS: SB1: Remove support for Pass 1 parts.
  MIPS: Require O32 FP64 support for MIPS64 with O32 compat
  MIPS: asm-offset.c: Patch up various comments refering to the old filename.

Pull parisc fix from Helge Deller:
 "A memory leak fix from Christophe Jaillet which was introduced with
  kernel 4.0 and which leads to kernel crashes on parisc after 1-3 days"

* 'parisc-4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: mm: Fix a memory leak related to pmd not attached to the pgd

Pull ARM SoC fixes from Olof Johansson:
 "By far most of the fixes here are updates to DTS files to deal with
  some mostly minor bugs.

  There's also a fix to deal with non-PM kernel configs on i.MX, a
  regression fix for ethernet on PXA platforms and a dependency fix for
  OMAP"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: keystone: dts: rename pcie nodes to help override status
  ARM: keystone: dts: fix dt bindings for PCIe
  ARM: pxa: fix dm9000 platform data regression
  ARM: dts: Correct audio input route & set mic bias for am335x-pepper
  ARM: OMAP2+: Add HAVE_ARM_SCU for AM43XX
  MAINTAINERS: digicolor: add dts files
  ARM: ux500: fix MMC/SD card regression
  ARM: ux500: define serial port aliases
  ARM: dts: OMAP5: Add #iommu-cells property to IOMMUs
  ARM: dts: OMAP4: Add #iommu-cells property to IOMMUs
  ARM: dts: Fix frequency scaling on Gumstix Pepper
  ARM: dts: configure regulators for Gumstix Pepper
  ARM: dts: omap3: overo: Update LCD panel names
  ARM: dts: cros-ec-keyboard: Add support for some Japanese keys
  ARM: imx6: gpc: always enable PU domain if CONFIG_PM is not set
  ARM: dts: imx53-qsb: fix TVE entry
  ARM: dts: mx23: fix iio-hwmon support
  ARM: dts: imx27: Adjust the GPT compatible string
  ARM: socfpga: dts: Fix entries order
  ARM: socfpga: dts: Fix adxl34x formating and compatible string

Commit 6134d949 ("MIPS: asm: fpu: Allow 64-bit FPU on MIPS32 R6")
added support for 64-bit FPU on a 32-bit MIPS R6 processor but it missed
the 64-bit CPU case leading to FPU failures when requesting FR=1 mode
(which is always the case for MIPS R6 userland) when running a 32-bit
kernel on a 64-bit CPU. We also fix the MIPS R2 case.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Fixes: 6134d949 ("MIPS: asm: fpu: Allow 64-bit FPU on MIPS32 R6")
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: <stable@vger.kernel.org> # 4.0+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10734/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Commit 0e0da48d ("parisc: mm: don't count preallocated pmds")
introduced a memory leak.

After this commit, the 'return' statement in pmd_free is executed in all
cases. Even for pmd that are not attached to the pgd.  So 'free_pages'
can never be called anymore, leading to a memory leak.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org  # v4.0+
Signed-off-by: Helge Deller <deller@gmx.de>

Merge "pxa fixes for v4.2" from Robert Jarzmik:

ARM: pxa: fixes for v4.2-rc2

This single fix reenables ethernet cards for several pxa boards,
broken by regulator addition to dm9000 driver.

* tag 'pxa-fixes-v4.2-rc2' of https://github.com/rjarzmik/linux:
  ARM: pxa: fix dm9000 platform data regression

Pull ARM fixes from Russell King:
 "A small set of ARM fixes for -rc3, most of them not far off
  one-liners, with the exception of fixing the V7 cache invalidation for
  incoming SMP processors which was causing problems for SoCFPGA
  devices"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: fix __virt_to_idmap build error on !MMU
  ARM: invalidate L1 before enabling coherency
  ARM: 8404/1: dma-mapping: fix off-by-one error in bitmap size check
  ARM: 8402/1: perf: Don't use of_node after putting it
  ARM: 8400/1: use virt_to_idmap to get phys_reset address

Pull x86 fixes from Ingo Molnar:
 "Two families of fixes:

   - Fix an FPU context related boot crash on newer x86 hardware with
     larger context sizes than what most people test.  To fix this
     without ugly kludges or extensive reverts we had to touch core task
     allocator, to allow x86 to determine the task size dynamically, at
     boot time.

     I've tested it on a number of x86 platforms, and I cross-built it
     to a handful of architectures:

                                        (warns)               (warns)
       testing     x86-64:  -git:  pass (    0),  -tip:  pass (    0)
       testing     x86-32:  -git:  pass (    0),  -tip:  pass (    0)
       testing        arm:  -git:  pass ( 1359),  -tip:  pass ( 1359)
       testing       cris:  -git:  pass ( 1031),  -tip:  pass ( 1031)
       testing       m32r:  -git:  pass ( 1135),  -tip:  pass ( 1135)
       testing       m68k:  -git:  pass ( 1471),  -tip:  pass ( 1471)
       testing       mips:  -git:  pass ( 1162),  -tip:  pass ( 1162)
       testing    mn10300:  -git:  pass ( 1058),  -tip:  pass ( 1058)
       testing     parisc:  -git:  pass ( 1846),  -tip:  pass ( 1846)
       testing      sparc:  -git:  pass ( 1185),  -tip:  pass ( 1185)

     ... so I hope the cross-arch impact 'none', as intended.

     (by Dave Hansen)

   - Fix various NMI handling related bugs unearthed by the big asm code
     rewrite and generally make the NMI code more robust and more
     maintainable while at it.  These changes are a bit late in the
     cycle, I hope they are still acceptable.

     (by Andy Lutomirski)"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu, sched: Introduce CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT and use it on x86
  x86/fpu, sched: Dynamically allocate 'struct fpu'
  x86/entry/64, x86/nmi/64: Add CONFIG_DEBUG_ENTRY NMI testing code
  x86/nmi/64: Make the "NMI executing" variable more consistent
  x86/nmi/64: Minor asm simplification
  x86/nmi/64: Use DF to avoid userspace RSP confusing nested NMI detection
  x86/nmi/64: Reorder nested NMI checks
  x86/nmi/64: Improve nested NMI comments
  x86/nmi/64: Switch stacks on userspace NMI entry
  x86/nmi/64: Remove asm code that saves CR2
  x86/nmi: Enable nested do_nmi() handling for 64-bit kernels

Pull timer fix from Ingo Molnar:
 "Fix for a misplaced export that can cause build failures in certain
  (rare) Kconfig situations"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tick: Move the export of tick_broadcast_oneshot_control to the proper place

Pull scheduler fix from Ingo Molnar:
 "A oneliner rq throttling fix"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Test list head instead of list entry in throttle_cfs_rq()

Pull perf fixes from Ingo Molnar:
 "Mostly tooling fixes, plus a static key fix fixing /sys/devices/cpu/rdpmc"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools: Really allow to specify custom CC, AR or LD
  perf auxtrace: Fix misplaced check for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT
  perf hists browser: Take the --comm, --dsos, etc filters into account
  perf symbols: Store if there is a filter in place
  x86, perf: Fix static_key bug in load_mm_cr4()
  tools: Copy lib/hweight.c from the kernel sources
  perf tools: Fix the detached tarball wrt rbtree copy
  perf thread_map: Fix the sizeof() calculation for map entries
  tools lib: Improve clean target
  perf stat: Fix shadow declaration of close
  perf tools: Fix lockup using 32-bit compat vdso

Pull irq fixes from Ingo Molnar:
 "Misc irq fixes:

   - two driver fixes
   - a Xen regression fix
   - a nested irq thread crash fix"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/gicv3-its: Fix mapping of LPIs to collections
  genirq: Prevent resend to interrupts marked IRQ_NESTED_THREAD
  genirq: Revert sparse irq locking around __cpu_up() and move it to x86 for now
  gpio/davinci: Fix race in installing chained irq handler

Merge fixes from Andrew Morton:
 "25 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (25 commits)
  lib/decompress: set the compressor name to NULL on error
  mm/cma_debug: correct size input to bitmap function
  mm/cma_debug: fix debugging alloc/free interface
  mm/page_owner: set correct gfp_mask on page_owner
  mm/page_owner: fix possible access violation
  fsnotify: fix oops in fsnotify_clear_marks_by_group_flags()
  /proc/$PID/cmdline: fixup empty ARGV case
  dma-debug: skip debug_dma_assert_idle() when disabled
  hexdump: fix for non-aligned buffers
  checkpatch: fix long line messages about patch context
  mm: clean up per architecture MM hook header files
  MAINTAINERS: uclinux-h8-devel is moderated for non-subscribers
  mailmap: update Sudeep Holla's email id
  Update Viresh Kumar's email address
  mm, meminit: suppress unused memory variable warning
  configfs: fix kernel infoleak through user-controlled format string
  include, lib: add __printf attributes to several function prototypes
  s390/hugetlb: add hugepages_supported define
  mm: hugetlb: allow hugepages_supported to be architecture specific
  revert "s390/mm: make hugepages_supported a boot time decision"
  ...

Pull btrfs fixes from Chris Mason:
 "These are all from Filipe, and cover a few problems we've had reported
  on the list recently (along with ones he found on his own)"

* 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix file corruption after cloning inline extents
  Btrfs: fix order by which delayed references are run
  Btrfs: fix list transaction->pending_ordered corruption
  Btrfs: fix memory leak in the extent_same ioctl
  Btrfs: fix shrinking truncate when the no_holes feature is enabled

Pull rtc fixes from Alexandre Belloni:
 "A few fixes for the RTC susbsystem for 4.2.

  The mt6397 driver was introduce in 4.2 so it is worth fixing before
  the final release.  I though the compilation warning for armada38x was
  fixed by akpm in commit f98b733e ("rtc-armada38x.c: remove unused
  local `flags'") but he actually missed some occurrences of the
  variables.  Since I received 4 patches for that, I think we can
  include it now.

  Summary:
   - fix mt6397 wakealarm creation
   - remove a compilation warning for armada38x that was forgotten"

* tag 'rtc-v4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  rtc: armada38x: Remove unused variable from armada38x_rtc_set_time()
  rtc: mt6397: enable wakeup before registering rtc device

Pull device mapper fixes from Mike Snitzer:

 - revert a request-based DM core change that caused IO latency to
   increase and adversely impact both throughput and system load

 - fix for a use after free bug in DM core's device cleanup

 - a couple DM btree removal fixes (used by dm-thinp)

 - a DM thinp fix for order-5 allocation failure

 - a DM thinp fix to not degrade to read-only metadata mode when in
   out-of-data-space mode for longer than the 'no_space_timeout'

 - fix a long-standing oversight in both dm-thinp and dm-cache by now
   exporting 'needs_check' in status if it was set in metadata

 - fix an embarrassing dm-cache busy-loop that caused worker threads to
   eat cpu even if no IO was actively being issued to the cache device

* tag 'dm-4.2-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm cache: avoid calls to prealloc_free_structs() if possible
  dm cache: avoid preallocation if no work in writeback_some_dirty_blocks()
  dm cache: do not wake_worker() in free_migration()
  dm cache: display 'needs_check' in status if it is set
  dm thin: display 'needs_check' in status if it is set
  dm thin: stay in out-of-data-space mode once no_space_timeout expires
  dm: fix use after free crash due to incorrect cleanup sequence
  Revert "dm: only run the queue on completion if congested or no requests pending"
  dm btree: silence lockdep lock inversion in dm_btree_del()
  dm thin: allocate the cell_sort_array dynamically
  dm btree remove: fix bug in redistribute3

Don't burden architectures without dynamic task_struct sizing
with the overhead of dynamic sizing.

Also optimize the x86 code a bit by caching task_struct_size.
Acked-and-Tested-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1437128892-9831-3-git-send-email-mingo@kernel.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>

The FPU rewrite removed the dynamic allocations of 'struct fpu'.
But, this potentially wastes massive amounts of memory (2k per
task on systems that do not have AVX-512 for instance).

Instead of having a separate slab, this patch just appends the
space that we need to the 'task_struct' which we dynamically
allocate already.  This saves from doing an extra slab
allocation at fork().

The only real downside here is that we have to stick everything
and the end of the task_struct.  But, I think the
BUILD_BUG_ON()s I stuck in there should keep that from being too
fragile.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1437128892-9831-2-git-send-email-mingo@kernel.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>

Without this we end up using the previous name of the compressor in the
loop in unpack_rootfs.  For example we get errors like "compression
method gzip not configured" even when we have CONFIG_DECOMPRESS_GZIP
enabled.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

In CMA, 1 bit in bitmap means 1 << order_per_bits pages so size of
bitmap is cma->count >> order_per_bits rather than just cma->count.
This patch fixes it.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Stefan Strogin <stefan.strogin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>