Currently, the 'chunk_size' of an array must be at-least PAGE_SIZE.

This makes moving an array to a machine with a larger PAGE_SIZE, or
changing the kernel to use a larger PAGE_SIZE, can stop an array from
working.

For RAID10 and RAID4/5/6, this is non-trivial to fix as the resync
process works on whole pages at a time, and assumes them to be wholly
within a stripe.  For other raid personalities, this restriction is
not needed at all and can be dropped.

So remove the test on chunk_size from common can, and add it in just
the places where it is needed: raid10 and raid4/5/6.
Signed-off-by: NNeilBrown <neilb@suse.de>

Having
   function (args)
instead of
   function(args)

make is harder to search for calls of particular functions.
So remove all those spaces.
Signed-off-by: NNeilBrown <neilb@suse.de>

A lot of cruft has gathered over the years.  Time to remove it.
Signed-off-by: NNeilBrown <neilb@suse.de>

This patch renames hash_spacing and preshift to  spacing and
sector_shift respectively with the following change of semantics:

Case 1: (sizeof(sector_t) <= sizeof(u32)).
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

In this case, we have sector_shift = preshift = 0 and spacing =
2 * hash_spacing.

Hence, the index for the hash table which is computed by the new code
in which_dev() as sector / spacing equals the old value which was
(sector/2) / hash_spacing.

Note also that the value of nb_zone stays the same because both sz
and base double.

Case 2: (sizeof(sector_t) > sizeof(u32)).
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

(aka the shifting dance case). Here we have sector_shift = preshift +
1 and

spacing = 2 * hash_spacing

during the computation of nb_zone and curr_sector, but

spacing = hash_spacing

in which_dev() because in the last hunk of the patch for linear.c we
shift down conf->spacing (= 2 * hash_spacing) by one more bit than
in the old code.

Hence in the computation of nb_zone, sz and base have the same value
as before, so nb_zone is not affected. Also curr_sector in the next
hunk stays the same.

In which_dev() the hash table index is computed as

(sector >> sector_shift) / spacing

In view of sector_shift = preshift + 1 and spacing = hash_spacing,
this equals

((sector/2) >> preshift) / hash_spacing

which is the value computed by the old code.
Signed-off-by: NAndre Noll <maan@systemlinux.org>
Signed-off-by: NNeilBrown <neilb@suse.de>

This is a preparation for representing also the remaining fields of struct
linear_private_data as sectors.
Signed-off-by: NAndre Noll <maan@systemlinux.org>
Signed-off-by: NNeilBrown <neilb@suse.de>

Rename them to num_sectors and start_sector which is more descriptive.
Signed-off-by: NAndre Noll <maan@systemlinux.org>
Signed-off-by: NNeilBrown <neilb@suse.de>

conf->smallest_size is undefined since day one of the git repo..
Signed-off-by: NAndre Noll <maan@systemlinux.org>
Signed-off-by: NNeilBrown <neilb@suse.de>

Signed-off-by: NAndre Noll <maan@systemlinux.org>
Signed-off-by: NNeilBrown <neilb@suse.de>

Signed-off-by: NAndre Noll <maan@systemlinux.org>
Signed-off-by: NNeilBrown <neilb@suse.de>

'read-auto' is a variant of 'readonly' which will switch to writable
on the first write attempt.

Calling do_md_stop to set the array readonly when it is already readonly
returns an error.  So make sure not to do that.
Signed-off-by: NNeilBrown <neilb@suse.de>

For externally managed metadata, the 'metadata_version' sysfs
attribute is really just a channel for user-space programs to
communicate about how the array is being managed.
It can be useful for this to be changed while the array is active.

Normally changes to metadata_version are not permitted while the array
is active.  Change that so that if the metadata is externally managed,
the metadata_version can be changed to a different flavour of external
management.
Signed-off-by: NNeilBrown <neilb@suse.de>

Fix rdev_size_store with size == 0.
size == 0 means to use the largest size allowed by the
underlying device and is used when modifying an active array.

This fixes a regression introduced by
 commit d7027458

Cc: <stable@kernel.org>
Signed-off-by: NChris Webb <chris@arachsys.com>
Signed-off-by: NNeilBrown <neilb@suse.de>

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (43 commits)
  ext4: Rename ext4dev to ext4
  ext4: Avoid double dirtying of super block in ext4_put_super()
  Update ext4 MAINTAINERS file
  Hook ext4 to the vfs fiemap interface.
  generic block based fiemap implementation
  ocfs2: fiemap support
  vfs: vfs-level fiemap interface
  ext4: fix xattr deadlock
  jbd2: Fix buffer head leak when writing the commit block
  ext4: Add debugging markers that can be used by systemtap
  jbd2: abort instead of waiting for nonexistent transaction
  ext4: fix initialization of UNINIT bitmap blocks
  ext4: Remove old legacy block allocator
  ext4: Use readahead when reading an inode from the inode table
  ext4: Improve the documentation for ext4's /proc tunables
  ext4: Combine proc file handling into a single set of functions
  ext4: move /proc setup and teardown out of mballoc.c
  ext4: Don't use 'struct dentry' for internal lookups
  ext4/jbd2: Avoid WARN() messages when failing to write to the superblock
  ext4: use percpu data structures for lg_prealloc_list
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (71 commits)
  ide: Remove ide_spin_wait_hwgroup() and use special requests instead
  ide: move IDE{FLOPPY,TAPE}_WAIT_CMD defines to <linux/ide.h>
  ide: add ide_do_test_unit_ready() helper
  ide: add ide_do_start_stop() helper
  ide: add ide_set_media_lock() helper
  ide-floppy: move floppy ioctls handling to ide-floppy_ioctl.c
  ide-floppy: ->{srfp,wp} -> IDE_AFLAG_{SRFP,WP}
  ide: add ide_queue_pc_tail() helper
  ide: add ide_queue_pc_head() helper
  ide: add ide_init_pc() helper
  ide-tape: add ide_tape_set_media_lock() helper
  ide-floppy: add ide_floppy_set_media_lock() helper
  ide: add ide_io_buffers() helper
  ide-scsi: cleanup ide_scsi_io_buffers()
  ide-floppy: remove MODE_SENSE_* defines
  ide-{floppy,tape}: remove packet command stack
  ide-{floppy,tape}: remove request stack
  ide-generic: handle probing of legacy io-ports v5
  ide-floppy: use scatterlists for pio transfers
  ide-tape: remove idetape_init_rq()
  ...

Merge phase #4 (X2APIC, APIC unification, CPU identification unification) of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-v28-for-linus-phase4-D' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (186 commits)
  x86, debug: print more information about unknown CPUs
  x86 setup: handle more than 8 CPU flag words
  x86: cpuid, fix typo
  x86: move transmeta cap read to early_init_transmeta()
  x86: identify_cpu_without_cpuid v2
  x86: extended "flags" to show virtualization HW feature in /proc/cpuinfo
  x86: move VMX MSRs to msr-index.h
  x86: centaur_64.c remove duplicated setting of CONSTANT_TSC
  x86: intel.c put workaround for old cpus together
  x86: let intel 64-bit use intel.c
  x86: make intel_64.c the same as intel.c
  x86: make intel.c have 64-bit support code
  x86: little clean up of intel.c/intel_64.c
  x86: make 64 bit to use amd.c
  x86: make amd_64 have 32 bit code
  x86: make amd.c have 64bit support code
  x86: merge header in amd_64.c
  x86: add srat_detect_node for amd64
  x86: remove duplicated force_mwait
  x86: cpu make amd.c more like amd_64.c v2
  ...

Conflicts:
	arch/x86/kernel/cpu/common.c
	arch/x86/kernel/signal_64.c
	include/asm-x86/cpufeature.h

Conflicts:
	arch/x86/kernel/apic_32.c
	arch/x86/kernel/apic_64.c
	arch/x86/kernel/setup.c
	drivers/pci/intel-iommu.c
	include/asm-x86/cpufeature.h
	include/asm-x86/dma-mapping.h

* 'x86-v28-for-linus-phase3-B' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (74 commits)
  AMD IOMMU: use iommu_device_max_index, fix
  AMD IOMMU: use iommu_device_max_index
  x86: add PCI IDs for AMD Barcelona PCI devices
  x86/iommu: use __GFP_ZERO instead of memset for GART
  x86/iommu: convert GART need_flush to bool
  x86/iommu: make GART driver checkpatch clean
  x86 gart: remove unnecessary initialization
  x86: restore old GART alloc_coherent behavior
  revert "x86: make GART to respect device's dma_mask about virtual mappings"
  x86: export pci-nommu's alloc_coherent
  iommu: remove fullflush and nofullflush in IOMMU generic option
  x86: remove set_bit_string()
  iommu: export iommu_area_reserve helper function
  AMD IOMMU: use coherent_dma_mask in alloc_coherent
  add AMD IOMMU tree to MAINTAINERS file
  AMD IOMMU: use cmd_buf_size when freeing the command buffer
  AMD IOMMU: calculate IVHD size with a function
  AMD IOMMU: remove unnecessary cast to u64 in the init code
  AMD IOMMU: free domain bitmap with its allocation order
  AMD IOMMU: simplify dma_mask_to_pages
  ...

* 'x86-v28-for-linus-phase2-B' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)
  x86, cpa: make the kernel physical mapping initialization a two pass sequence, fix
  x86, pat: cleanups
  x86: fix pagetable init 64-bit breakage
  x86: track memtype for RAM in page struct
  x86, cpa: srlz cpa(), global flush tlb after splitting big page and before doing cpa
  x86, cpa: remove cpa pool code
  x86, cpa: no need to check alias for __set_pages_p/__set_pages_np
  x86, cpa: dont use large pages for kernel identity mapping with DEBUG_PAGEALLOC
  x86, cpa: make the kernel physical mapping initialization a two pass sequence
  x86, cpa: remove USER permission from the very early identity mapping attribute
  x86, cpa: rename PTE attribute macros for kernel direct mapping in early boot
  x86: make sure the CPA test code's use of _PAGE_UNUSED1 is obvious
  linux-next: fix x86 tree build failure
  x86: have set_memory_array_{uc,wb} coalesce memtypes, fix
  agp: enable optimized agp_alloc_pages methods
  x86: have set_memory_array_{uc,wb} coalesce memtypes.
  x86: {reverve,free}_memtype() take a physical address
  x86: fix pageattr-test
  agp: add agp_generic_destroy_pages()
  agp: generic_alloc_pages()
  ...

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (236 commits)
  [ARM] 5300/1: fixup spitz reset during boot
  [ARM] 5295/1: make ZONE_DMA optional
  [ARM] 5239/1: Palm Zire 72 power management support
  [ARM] 5298/1: Drop desc_handle_irq()
  [ARM] 5297/1: [KS8695] Fix two compile-time warnings
  [ARM] 5296/1: [KS8695] Replace macro's with trailing underscores.
  [ARM] pxa: allow multi-machine PCMCIA builds
  [ARM] pxa: add preliminary CPUFREQ support for PXA3xx
  [ARM] pxa: add missing ACCR bit definitions to pxa3xx-regs.h
  [ARM] pxa: rename cpu-pxa.c to cpufreq-pxa2xx.c
  [ARM] pxa/zylonite: add support for USB OHCI
  [ARM] ohci-pxa27x: use ioremap() and offset for register access
  [ARM] ohci-pxa27x: introduce pxa27x_clear_otgph()
  [ARM] ohci-pxa27x: use platform_get_{irq,resource} for the resource
  [ARM] ohci-pxa27x: move OHCI controller specific registers into the driver
  [ARM] ohci-pxa27x: introduce flags to avoid direct access to OHCI registers
  [ARM] pxa: move I2S register and bit definitions into pxa2xx-i2s.c
  [ARM] pxa: simplify DMA register definitions
  [ARM] pxa: make additional DCSR bits valid for PXA3xx
  [ARM] pxa: move i2c register and bit definitions into i2c-pxa.c
  ...

Fixed up conflicts in
	arch/arm/mach-versatile/core.c
	sound/soc/pxa/pxa2xx-ac97.c
	sound/soc/pxa/pxa2xx-i2s.c
manually.

NULL function pointers are very bad security wise. This one got caught by
kerneloops.org quite a few times, so it's happening in the field....

Fix is simple, check the function pointer for NULL, like 6 other places
in the same function are already doing.
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The dummy version of 'nf_conntrack_event_cache()' (used when the
NF_CONNTRACK_EVENTS config option is not enabled) had not been updated
when the calling convention changed.

This was introduced by commit a71996fc
("netfilter: netns nf_conntrack: pass conntrack to
nf_conntrack_event_cache() not skb")

Tssk.

Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1075 commits)
  myri10ge: update driver version number to 1.4.3-1.369
  r8169: add shutdown handler
  r8169: preliminary 8168d support
  r8169: support additional 8168cp chipset
  r8169: change default behavior for mildly identified 8168c chipsets
  r8169: add a new 8168cp flavor
  r8169: add a new 8168c flavor (bis)
  r8169: add a new 8168c flavor
  r8169: sync existing 8168 device hardware start sequences with vendor driver
  r8169: 8168b Tx performance tweak
  r8169: make room for more specific 8168 hardware start procedure
  r8169: shuffle some registers handling around (8168 operation only)
  r8169: new phy init parameters for the 8168b
  r8169: update phy init parameters
  r8169: wake up the PHY of the 8168
  af_key: fix SADB_X_SPDDELETE response
  ath9k: Fix return code when ath9k_hw_setpower() fails on reset
  ath9k: remove nasty FAIL macro from ath9k_hw_reset()
  gre: minor cleanups in netlink interface
  gre: fix copy and paste error
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] Check that last search entry resume key is valid
  [CIFS] make sure we have the right resume info before calling CIFSFindNext
  [CIFS]  clean up error handling in cifs_unlink
  [CIFS] fix some settings of cifsAttrs after calling SetFileInfo and SetPathInfo
  cifs: explicitly revoke SPNEGO key after session setup
  cifs: Convert cifs to new aops.
  [CIFS] update DOS attributes in cifsInode if we successfully changed them
  cifs: remove NULL termination from rename target in CIFSSMBRenameOpenFIle
  cifs: work around samba returning -ENOENT on SetFileDisposition call
  cifs: fix inverted NULL check after kmalloc
  [CIFS] clean up upcall handling for dns_resolver keys
  [CIFS]  fix busy-file renames and refactor cifs_rename logic
  cifs: add function to set file disposition
  [CIFS] add constants for string lengths of keynames in SPNEGO upcall string
  cifs: move rename and delete-on-close logic into helper function
  cifs: have find_writeable_file prefer filehandles opened by same task
  cifs: don't use GFP_KERNEL with GFP_NOFS
  [CIFS] use common code for turning off ATTR_READONLY in cifs_unlink
  cifs: clean up variables in cifs_unlink

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (49 commits)
  MIPS: RB532: provide GPIO_BUILTIN_NR and irq_to_gpio/gpio_to_irq
  MIPS: Move ptrace prototypes to ptrace.h
  MIPS: Ptrace support for HARDWARE_WATCHPOINTS
  MIPS: Scheduler support for HARDWARE_WATCHPOINTS.
  MIPS: Watch exception handling for HARDWARE_WATCHPOINTS.
  MIPS: Probe watch registers and report configuration.
  MIPS: Add HARDWARE_WATCHPOINTS definitions and support code.
  MIPS: Add HARDWARE_WATCHPOINTS configure option.
  MIPS: Replace use of <asm-generic/uaccess.h> with native implementations.
  MIPS: TXx9: Add TX4939 ATA support (v2)
  MIPS: Rewrite spinlocks to ticket locks.
  MIPS: IP checksums: Optimize adjust of sum on buffers of odd alignment.
  MIPS: IP checksums: Remove unncessary .set pseudos
  MIPS: IP checksums: Remove unncessary folding of sum to 16 bit.
  MIPS: Move headfiles to new location below arch/mips/include
  MIPS: Alchemy: rename directory
  MIPS: Optimize get_user and put_user for 64-bit
  MIPS: TXx9: Implement prom_free_prom_memory
  MIPS: TXx9: Add RBTX4939 board support
  MIPS: TXx9: Add TX4939 SoC support
  ...

* 'for-linus' of git://git.alsa-project.org/alsa-kernel: (258 commits)
  ALSA: hda: VREF powerdown for headphones
  ALSA: hda: STAC_HP_M4
  ALSA: ASoC: Check for machine type in GTA01 machine driver
  ALSA: mtpav - Fix race in probe
  ALSA: usb-audio: dynamic detection of MIDI interfaces in uaxx-quirk
  ALSA: Add a note on dependency of RTC stuff
  ALSA: ASoC: add new param mux to dapm_mux_update_power
  ALSA: Increase components array size
  ALSA: ASoC: Correct inverted Mic PGA Switch control in wm8510 driver
  ALSA: hda: comment typo fix
  ALSA: hda: comment typo fix
  ALSA: hda - Fix PCI SSID for ASROCK K18N78FullHD-hSLI
  ALSA: snd-usb-audio: support for Edirol UA-4FX device
  ALSA: usb - Fix possible Oops at USB-MIDI disconnection
  ALSA: hda - Fix another ALC889A (rev 0x100101)
  ALSA: hda: add more board-specific information for Realtek ALC662 rev1
  ALSA: Correct Vladimir Barinov's e-mail address
  ALSA: cs46xx: Add PCI IDs for TerraTec and Hercules cards
  ALSA: hda: SPDIF stream muting support
  ALSA: hda: appletv support
  ...

* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (27 commits)
  [S390] Fix checkstack for s390
  [S390] fix initialization of stp
  [S390] 3215: Remove tasklet.
  [S390] console flush on panic / reboot
  [S390] introduce dirty bit for kvm live migration
  [S390] Add ioctl support for EMC Symmetrix Subsystem Control I/O
  [S390] xpram: per device block request queues.
  [S390] dasd: fix message flood for unsolicited interrupts
  [S390] Move private simple udelay function to arch/s390/lib/delay.c.
  [S390] dcssblk: add >2G DCSSs support and stacked contiguous DCSSs support.
  [S390] ptrace changes
  [S390] s390: use sys_pause for 31bit pause entry point
  [S390] qdio enhanced SIGA (iqdio) support.
  [S390] cio: fix cio_tpi.
  [S390] cio: Correct use of ! and &
  [S390] cio: inline assembly cleanup
  [S390] bus_id -> dev_set_name() for css and ccw busses
  [S390] bus_id ->dev_name() conversions in qdio
  [S390] Use s390_root_dev_* in kvm_virtio.
  [S390] more bus_id -> dev_name conversions
  ...

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Fix BUG: using smp_processor_id() in preemptible code
  [CPUFREQ] Don't export governors for default governor
  [CPUFREQ][6/6] cpufreq: Add idle microaccounting in ondemand governor
  [CPUFREQ][5/6] cpufreq: Changes to get_cpu_idle_time_us(), used by ondemand governor
  [CPUFREQ][4/6] cpufreq_ondemand: Parameterize down differential
  [CPUFREQ][3/6] cpufreq: get_cpu_idle_time() changes in ondemand for idle-microaccounting
  [CPUFREQ][2/6] cpufreq: Change load calculation in ondemand for software coordination
  [CPUFREQ][1/6] cpufreq: Add cpu number parameter to __cpufreq_driver_getavg()
  [CPUFREQ] use deferrable delayed work init in conservative governor
  [CPUFREQ] drivers/cpufreq/cpufreq.c: Adjust error handling code involving cpufreq_cpu_put
  [CPUFREQ] add error handling for cpufreq_register_governor() error
  [CPUFREQ] acpi-cpufreq: add error handling for cpufreq_register_driver() error
  [CPUFREQ] Coding style fixes to arch/x86/kernel/cpu/cpufreq/powernow-k6.c
  [CPUFREQ] Coding style fixes to arch/x86/kernel/cpu/cpufreq/elanfreq.c

This patchs defines the number of built-in the GPIOs present
on the SoC as Documentation/gpio.txt recommends to do.
Define irq_to_gpio/gpio_to_irq to return the right values so that
it fixes a compilation error on drivers/gpio/gpiolib.c
when enabling debugfs.
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This is the final part of the watch register patch.  Here we hook up
ptrace so that the user space debugger (gdb), can set and read the
registers.
Signed-off-by: NDavid Daney <ddaney@avtrex.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Here we hook up the scheduler.  Whenever we switch to a new process,
we check to see if the watch registers should be installed, and do it
if needed.
Signed-off-by: NDavid Daney <ddaney@avtrex.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Here we hook up the watch exception handler so that it sends SIGTRAP when
the hardware watch registers are triggered.
Signed-off-by: NDavid Daney <ddaney@avtrex.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Probe for watch register characteristics, and report them in /proc/cpuinfo.
Signed-off-by: NDavid Daney <ddaney@avtrex.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This is the main support code for the patch.  Here we just add the
code, the following patches hook it up.
Signed-off-by: NDavid Daney <ddaney@avtrex.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

 create mode 100644 arch/mips/include/asm/watch.h
 create mode 100644 arch/mips/kernel/watch.c

This is automatically set for all MIPS32 and MIPS64 processors.
Signed-off-by: NDavid Daney <ddaney@avtrex.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Add a helper routine to register tx4939ide driver and use it on
RBTX4939 board.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Based on patch by Chad Reese of Cavium Networks.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>