The code in xfs_free_buf() only attempts to free the b_pages array if the
buffer is a page cache backed or page allocated buffer. The extra log buffer
that is used when the log wraps uses pages that are allocated to a different
log buffer, but it still has a b_pages array allocated when those pages
are associated to with the extra buffer in xfs_buf_associate_memory.

Hence we need to always attempt to free the b_pages array when tearing
down a buffer, not just on buffers that are explicitly marked as page bearing
buffers. This fixes a leak detected by the kernel memory leak code.
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Alex Elder <aelder@sgi.com>

For a long time we've always stored bmap btree records in the 64bit format,
so kill off the dead 32bit type, and make sure the 64bit type is named just
xfs_bmbt_rec everywhere, without any size postfix.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>

Change all async metadata buffers to use [READ|WRITE]_META I/O types
so that the I/O doesn't get issued immediately. This allows merging of
adjacent metadata requests but still prioritises them over bulk data.
This shows a 10-15% improvement in sequential create speed of small
files.

Don't include the log buffers in this classification - leave them as
sync types so they are issued immediately.
Signed-off-by: Dave Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

Add an assert for inodes not added to the inode cache in xfs_ireclaim,
to make sure we're not going to introduce something like the
famous nfsd inode cache bug again.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: temporarily disable discard granularity

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (26 commits)
  net: sh_eth alignment fix for sh7724 using NET_IP_ALIGN V2
  ixgbe: allow tx of pre-formatted vlan tagged packets
  ixgbe: Fix 82598 premature copper PHY link indicatation
  ixgbe: Fix tx_restart_queue/non_eop_desc statistics counters
  bcm63xx_enet: fix compilation failure after get_stats_count removal
  packet: dont call sleeping functions while holding rcu_read_lock()
  tcp: Revert per-route SACK/DSACK/TIMESTAMP changes.
  ipvs: zero usvc and udest
  netfilter: fix crashes in bridge netfilter caused by fragment jumps
  ipv6: reassembly: use seperate reassembly queues for conntrack and local delivery
  sky2: leave PCI config space writeable
  sky2: print Optima chip name
  x25: Update maintainer.
  ipvs: fix synchronization on connection close
  netfilter: xtables: document minimal required version
  drivers/net/bonding/: : use pr_fmt
  can: CAN_MCP251X should depend on HAS_DMA
  drivers/net/usb: Correct code taking the size of a pointer
  drivers/net/cpmac.c: Correct code taking the size of a pointer
  drivers/net/sfc: Correct code taking the size of a pointer
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (45 commits)
  RDMA/cxgb3: Fix error paths in post_send and post_recv
  RDMA/nes: Fix stale ARP issue
  RDMA/nes: FIN during MPA startup causes timeout
  RDMA/nes: Free kmap() resources
  RDMA/nes: Check for zero STag
  RDMA/nes: Fix Xansation test crash on cm_node ref_count
  RDMA/nes: Abnormal listener exit causes loopback node crash
  RDMA/nes: Fix crash in nes_accept()
  RDMA/nes: Resource not freed for REJECTed connections
  RDMA/nes: MPA request/response error checking
  RDMA/nes: Fix query of ORD values
  RDMA/nes: Fix MAX_CM_BUFFER define
  RDMA/nes: Pass correct size to ioremap_nocache()
  RDMA/nes: Update copyright and branding string
  RDMA/nes: Add max_cqe check to nes_create_cq()
  RDMA/nes: Clean up struct nes_qp
  RDMA/nes: Implement IB_SIGNAL_ALL_WR as an iWARP extension
  RDMA/nes: Add additional SFP+ PHY uC status check and PHY reset
  RDMA/nes: Correct fast memory registration implementation
  IB/ehca: Fix error paths in post_send and post_recv
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (22 commits)
  Input: ALPS - add interleaved protocol support (Dell E6x00 series)
  Input: keyboard - don't override beep with a bell
  Input: altera_ps2 - fix test of unsigned in altera_ps2_probe()
  Input: add mc13783 touchscreen driver
  Input: ep93xx_keypad - update driver to new core support
  Input: wacom - separate pen from express keys on Graphire
  Input: wacom - add defines for data packet report IDs
  Input: wacom - add support for new LCD tablets
  Input: wacom - add defines for packet lengths of various devices
  Input: wacom - ensure the device is initialized properly upon resume
  Input: at32psif - do not sleep in atomic context
  Input: i8042 - add Gigabyte M1022M to the noloop list
  Input: i8042 - allow installing platform filters for incoming data
  Input: i8042 - fix locking in interrupt routine
  Input: ALPS - do not set REL_X/REL_Y capabilities on the touchpad
  Input: document use of input_event() function
  Input: sa1111ps2 - annotate probe() and remove() methods
  Input: ambakmi - annotate probe() and remove() methods
  Input: gscps2 - fix probe() and remove() annotations
  Input: altera_ps2 - add annotations to probe and remove methods
  ...

* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: fix r100->r500 CS checker for compressed textures. (v2)
  drm/radeon/kms: allow for texture tiling
  drm/radeon/kms: init pm on all chipsets
  drm/radeon/kms: HDMI support for R600 KMS
  drm/radeon/kms: make sure mc is initialized before mapping blit bo
  drm/radeon/kms: Return to userspace on ERESTARTSYS
  drm/radeon/gem: don't leak a gem object if reserve fails on get tiling (v2)
  drm/radeon/kms: don't report allocate failure on ERESTARTSYS
  drm/radeon/kms: Check if bo we got from ttm are radeon object or not
  drm/radeon/kms: If no placement is supplied fallback to system
  drm/ttm: Fix memory type manager debug information printing
  drm/ttm: Fix printk format & compute bo->mem.size at bo initialization
  drm/ttm: Fix potential ttm_mem_evict_first races.
  drm/ttm: Delayed delete fixes.
  drm/ttm: fix two bugs in new placement routines.
  drm/ttm: fix incorrect logic in ttm_bo_io path
  drm/nouveau: remove use of -ERESTART
  nouveau: Fix endianness with new context program loader
  drm/nouveau: fix build with CONFIG_AGP=n
  drm/nouveau: fix ch7006 build

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (33 commits)
  sh: Fix test of unsigned in se7722_irq_demux()
  sh: mach-ecovec24: Add FSI sound support
  sh: mach-ecovec24: Add mt9t112 camera support
  sh: mach-ecovec24: Add tw9910 support
  sh: MSIOF/mmc_spi platform data for the Ecovec24 board
  sh: ms7724se: Add ak4642 support
  sh: Fix up FPU build for SH5
  sh: Remove old early serial console code V2
  sh: sh5 scif pdata (sh5-101/sh5-103)
  sh: sh4a scif pdata (sh7757/sh7763/sh7770/sh7780/sh7785/sh7786/x3)
  sh: sh4a scif pdata (sh7343/sh7366/sh7722/sh7723/sh7724)
  sh: sh4 scif pdata (sh7750/sh7760/sh4-202)
  sh: sh3 scif pdata (sh7705/sh770x/sh7710/sh7720)
  sh: sh2a scif pdata (sh7201/sh7203/sh7206/mxg)
  sh: sh2 scif pdata (sh7616)
  sh-sci: Extend sh-sci driver with early console V2
  sh: Stub in P3 ioremap support for nommu parts.
  sh: wire up vmallocinfo support in ioremap() implementations.
  sh: Make the unaligned trap handler always obey notification levels.
  sh: Couple kernel and user write page perm bits for CONFIG_X2TLB
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6:
  fat: make discard a mount option

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
  ppc440spe-adma: adds updated ppc440spe adma driver
  iop-adma.c: use resource_size()
  dmaengine: clarify the meaning of the DMA_CTRL_ACK flag
  sh: stylistic improvements for the DMA driver
  dmaengine: fix dmatest to verify minimum transfer length and test buffer size
  sh: DMA driver has to specify its alignment requirements
  Add COH 901 318 DMA block driver v5

* git://git.infradead.org/mtd-2.6: (90 commits)
  jffs2: Fix long-standing bug with symlink garbage collection.
  mtd: OneNAND: Fix test of unsigned in onenand_otp_walk()
  mtd: cfi_cmdset_0002, fix lock imbalance
  Revert "mtd: move mxcnd_remove to .exit.text"
  mtd: m25p80: add support for Macronix MX25L4005A
  kmsg_dump: fix build for CONFIG_PRINTK=n
  mtd: nandsim: add support for 4KiB pages
  mtd: mtdoops: refactor as a kmsg_dumper
  mtd: mtdoops: make record size configurable
  mtd: mtdoops: limit the maximum mtd partition size
  mtd: mtdoops: keep track of used/unused pages in an array
  mtd: mtdoops: several minor cleanups
  core: Add kernel message dumper to call on oopses and panics
  mtd: add ARM pismo support
  mtd: pxa3xx_nand: Fix PIO data transfer
  mtd: nand: fix multi-chip suspend problem
  mtd: add support for switching old SST chips into QRY mode
  mtd: fix M29W800D dev_id and uaddr
  mtd: don't use PF_MEMALLOC
  mtd: Add bad block table overrides to Davinci NAND driver
  ...

Fixed up conflicts (mostly trivial) in
	drivers/mtd/devices/m25p80.c
	drivers/mtd/maps/pcmciamtd.c
	drivers/mtd/nand/pxa3xx_nand.c
	kernel/printk.c

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
  parisc: Fixup last users of irq_chip->typename
  parisc: convert /proc/pdc/{lcd,led} to seq_file
  parisc: Convert BUG() to use unreachable()
  parisc: Replace old style lock init in smp.c
  parisc: use sort() instead of home-made implementation (v2)
  parisc: add CALLER_ADDR{0-6} macros
  parisc: remove unused IRQSTAT_SIRQ_PEND and IRQSTAT_SZ defines
  parisc: remove duplicated #include

* git://git.infradead.org/iommu-2.6:
  implement early_io{re,un}map for ia64
  Revert "Intel IOMMU: Avoid memory allocation failures in dma map api calls"
  intel-iommu: ignore page table validation in pass through mode
  intel-iommu: Fix oops with intel_iommu=igfx_off
  intel-iommu: Check for an RMRR which ends before it starts.
  intel-iommu: Apply BIOS sanity checks for interrupt remapping too.
  intel-iommu: Detect DMAR in hyperspace at probe time.
  dmar: Fix build failure without NUMA, warn on bogus RHSA tables and don't abort
  iommu: Allocate dma-remapping structures using numa locality info
  intr_remap: Allocate intr-remapping table using numa locality info
  dmar: Allocate queued invalidation structure using numa locality info
  dmar: support for parsing Remapping Hardware Static Affinity structure

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  edac, mce, amd: silence GART TLB errors
  edac, mce: correct corenum reporting

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (116 commits)
  V4L/DVB (13698): pms: replace asm/uaccess.h to linux/uaccess.h
  V4L/DVB (13690): radio/si470x: #include <sched.h>
  V4L/DVB (13688): au8522: modify the attributes of local filter coefficients
  V4L/DVB (13687): cx231xx: use NULL when pointer is needed
  V4L/DVB: Davinci VPFE Capture: remove unused #include <linux/version.h>
  V4L/DVB (13685): Correct code taking the size of a pointer
  V4L/DVB (13684): Fix some cut-and-paste noise in dib0090.h
  V4L/DVB (13683): sanio-ms: clean up init, exit and id_table
  V4L/DVB (13682): dib8000: make some constant static
  V4L/DVB: lgs8gxx: Use shifts rather than multiply/divide when possible
  V4L/DVB (13680b): DocBook/media: create links for included sources
  V4L/DVB (13680a): DocBook/media: copy images after building HTML
  V4L/DVB (13678): Add support for yet another DvbWorld, TeVii and Prof USB devices
  V4L/DVB (13676): configurable IRQ mode on NetUP Dual DVB-S2 CI; IRQ from CAM processing (CI interface works faster)
  V4L/DVB (13674): stv090x: Add DiSEqC envelope mode
  V4L/DVB (13673): lnbp21: Implement 22 kHz tone control
  V4L/DVB (13671): sh_mobile_ceu_camera: Remove frame size page alignment
  V4L/DVB (13670): soc-camera: Add mt9t112 camera driver
  V4L/DVB (13669): tw9910: Add sync polarity support
  V4L/DVB (13668): tw9910: remove cropping
  ...

* akpm: (173 commits)
  genalloc: use bitmap_find_next_zero_area
  ia64: use bitmap_find_next_zero_area
  sparc: use bitmap_find_next_zero_area
  mlx4: use bitmap_find_next_zero_area
  isp1362-hcd: use bitmap_find_next_zero_area
  iommu-helper: use bitmap library
  bitmap: introduce bitmap_set, bitmap_clear, bitmap_find_next_zero_area
  qnx4: use hweight8
  qnx4fs: remove remains of the (defunct) write support
  resource: constify arg to resource_size() and resource_type()
  gru: send cross partition interrupts using the gru
  gru: function to generate chipset IPI values
  gru: update driver version number
  gru: improve GRU TLB dropin statistics
  gru: fix GRU interrupt race at deallocate
  gru: add hugepage support
  gru: fix bug in allocation of kernel contexts
  gru: update GRU structures to match latest hardware spec
  gru: check for correct GRU chiplet assignment
  gru: remove stray local_irq_enable
  ...

Although reporting of benign GART TLB errors is disabled in
__mcheck_cpu_apply_quirks, those are still being logged, and, as a
result, trip up amd64_edac. Pull up reporting check so that machines
with loaded edac module bail out early and don't spit fragments into
dmesg.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Roland Dreier <rolandd@cisco.com>
Cc: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Lothar Wassmann <LW@KARO-electronics.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Use bitmap library and kill some unused iommu helper functions.

1. s/iommu_area_free/bitmap_clear/

2. s/iommu_area_reserve/bitmap_set/

3. Use bitmap_find_next_zero_area instead of find_next_zero_area

  This cannot be simple substitution because find_next_zero_area
  doesn't check the last bit of the limit in bitmap

4. Remove iommu_area_free, iommu_area_reserve, and find_next_zero_area
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

This introduces new bitmap functions:

bitmap_set: Set specified bit area
bitmap_clear: Clear specified bit area
bitmap_find_next_zero_area: Find free bit area

These are mostly stolen from iommu helper. The differences are:

- Use find_next_bit instead of doing test_bit for each bit

- Rewrite bitmap_set and bitmap_clear

  Instead of setting or clearing for each bit.

- Check the last bit of the limit

  iommu-helper doesn't want to find such area

- The return value if there is no zero area

  find_next_zero_area in iommu helper: returns -1
  bitmap_find_next_zero_area: return >= bitmap size
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Lothar Wassmann <LW@KARO-electronics.de>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Use hweight8 instead of counting for each bit
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Anders Larsen <al@alarsen.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

commit 945ffe54 ("qnx4: remove write support") removed the (defunct)
write support but missed a chunk of related, dead code.
Signed-off-by: Anders Larsen <al@alarsen.net>
Cc: Jiri Kosina <jkosina@suse.cz>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

resource_size() doesn't change the resource it operates on, so the res
parameter can be marked const.  Same for resource_type().
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

GRU Message queue instructions are used to deliver messages to other SSIs
within the numalink domain.  In most cases, a single GRU mesq instruction
will deliver both the message AND an interrupt to notify the other SSI
that a messsage is present.  In some cases, however, the interrupt must be
sent explicitly.

To improve resilency, the GRU driver should send these explicit interrupts
using the GRU to write the remote chipset register.  Current code sends
the interrupt using a cpu instruction to write the chipset register.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Create a function to generate the value that is written to the UV hub MMR
to cause an IPI interrupt to be sent.  The function will be used in the
GRU message queue error recovery code that sends IPIs to nodes in remote
partitions.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Update the version number of the GRU driver.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Update the TLB dropin statistics kept for each GRU context.  Count TLB
dropins separate from the misses - some misses do not result in a TLB
dropin.  Some of the diagnostics need both counts.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Fix a race where an interrupt could be received for a GRU context that has
been deallocated.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Add support for hugepages. Easier than I originally thought.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Fix a bug in the assignment of GRU contexts used for kernel functions.  If
a sleep occurs on the wait for a semaphore, the thread could switch cpus
and allocate resources on the wrong blade.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Add a few new definitions for chipset MMR field names.  This matches rev
0.7 of the hardware spec.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Simplify the code that checks for correct assignment of GRU contexts to
users.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Remove a stray local_irq_enable() in the GRU TLB dropin code.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Use symbol names instead of numbers for error return values for the vtop
functions.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>