Currently we need to either call IHOLD or xfs_trans_ihold on an inode when
joining it to a transaction via xfs_trans_ijoin.

This patches instead makes xfs_trans_ijoin usable on it's own by doing
an implicity xfs_trans_ihold, which also allows us to drop the third
argument.  For the case where we want to hold a reference on the inode
a xfs_trans_ijoin_ref wrapper is added which does the IHOLD and marks
the inode for needing an xfs_iput.  In addition to the cleaner interface
to the caller this also simplifies the implementation.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <dchinner@redhat.com>

Get rid of the xfs_buf_pin/xfs_buf_unpin/xfs_buf_ispin helpers and opencode
them in their only callers, just like we did for the inode pinning a while
ago.  Also remove duplicate trace points - the bufitem tracepoints cover
all the information that is present in a buffer tracepoint.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <dchinner@redhat.com>

Stop the function pointer casting madness and give all the li_cb instances
correct prototype.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <dchinner@redhat.com>

Stop the function pointer casting madness and give all the xfs_item_ops the
correct prototypes.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <dchinner@redhat.com>

The unpin_remove item operation instances always share most of the
implementation with the respective unpin implementation.  So instead
of keeping two different entry points add a remove flag to the unpin
operation and share the code more easily.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <dchinner@redhat.com>

Currently we track log item descriptor belonging to a transaction using a
complex opencoded chunk allocator.  This code has been there since day one
and seems to work around the lack of an efficient slab allocator.

This patch replaces it with dynamically allocated log item descriptors
from a dedicated slab pool, linked to the transaction by a linked list.

This allows to greatly simplify the log item descriptor tracking to the
point where it's just a couple hundred lines in xfs_trans.c instead of
a separate file.  The external API has also been simplified while we're
at it - the xfs_trans_add_item and xfs_trans_del_item functions to add/
delete items from a transaction have been simplified to the bare minium,
and the xfs_trans_find_item function is replaced with a direct dereference
of the li_desc field.  All debug code walking the list of log items in
a transaction is down to a simple list_for_each_entry.

Note that we could easily use a singly linked list here instead of the
double linked list from list.h as the fastpath only does deletion from
sequential traversal.  But given that we don't have one available as
a library function yet I use the list.h functions for simplicity.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <dchinner@redhat.com>

Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <david@fromorbit.com>

Dmapi support was never merged upstream, but we still have a lot of hooks
bloating XFS for it, all over the fast pathes of the filesystem.

This patch drops over 700 lines of dmapi overhead.  If we'll ever get HSM
support in mainline at least the namespace events can be done much saner
in the VFS instead of the individual filesystem, so it's not like this
is much help for future work.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <dchinner@redhat.com>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: synaptics - relax capability ID checks on newer hardware
  Input: twl40300-keypad - fix handling of "all ground" rows
  Input: gamecon - reference correct pad in gc_psx_command()
  Input: gamecon - reference correct input device in NES mode
  Input: w90p910_keypad - change platfrom driver name to 'nuc900-kpi'
  Input: i8042 - add Gigabyte Spring Peak to dmi_noloop_table
  Input: qt2160 - rename kconfig symbol name

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: add quirk to make HP DV5000 laptop resume
  drm/radeon/kms: fix RADEON_INFO_CRTC_FROM_ID info ioctl
  Fix ttm_page_alloc.c build breakage
  drm/radeon/kms: fix legacy LVDS dpms sequence
  drm/radeon/kms: drop taking lock around crtc lookup.

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: talitos - fix bug in sg_copy_end_to_buffer

Merge branch 'x86/auditsyscall' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland

* 'x86/auditsyscall' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland:
  x86: auditsyscall: fix fastpath return value after reschedule

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
  sysrq,kdb: Use __handle_sysrq() for kdb's sysrq function
  debug_core,kdb: fix kgdb_connected bit set in the wrong place
  Fix merge regression from external kdb to upstream kdb
  repair gdbstub to match the gdbserial protocol specification
  kdb: break out of kdb_ll() when command is terminated

Fix the security problem in the CIFS filesystem DNS lookup code in which a
malicious redirect could be installed by a random user by simply adding a
result record into one of their keyrings with add_key() and then invoking a
CIFS CFS lookup [CVE-2010-2524].

This is done by creating an internal keyring specifically for the caching of
DNS lookups.  To enforce the use of this keyring, the module init routine
creates a set of override credentials with the keyring installed as the thread
keyring and instructs request_key() to only install lookup result keys in that
keyring.

The override is then applied around the call to request_key().

This has some additional benefits when a kernel service uses this module to
request a key:

 (1) The result keys are owned by root, not the user that caused the lookup.

 (2) The result keys don't pop up in the user's keyrings.

 (3) The result keys don't come out of the quota of the user that caused the
     lookup.

The keyring can be viewed as root by doing cat /proc/keys:

2a0ca6c3 I-----     1 perm 1f030000     0     0 keyring   .dns_resolver: 1/4

It can then be listed with 'keyctl list' by root.

	# keyctl list 0x2a0ca6c3
	1 key in keyring:
	726766307: --alswrv     0     0 dns_resolver: foo.bar.com
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Reviewed-and-Tested-by: NJeff Layton <jlayton@redhat.com>
Acked-by: NSteve French <smfrench@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=29062Reported-by: NAndres Cimmarusti <acimmarusti@gmail.com>
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Older firmwares fixed the middle byte of the Synaptics capabilities
query to 0x47, but starting with firmware 7.5 the middle byte
represents submodel ID, sometimes also called "dash number".
Reported-and-tested-by: NMiroslav Šulc <fordfrog@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

In the CONFIG_AUDITSYSCALL fast-path for x86 64-bit system calls,
we can pass a bad return value and/or error indication for the
system call to audit_syscall_exit().  This happens when
TIF_NEED_RESCHED was set as the system call returned, so we went
out to schedule() and came back to the exit-audit fast-path.  The
fix is to reload the user return value register from the pt_regs
before using it for audit_syscall_exit().

Both the 32-bit kernel's fast path and the 64-bit kernel's 32-bit
system call fast paths work slightly differently, so that they
always leave the fast path entirely to reschedule and don't return
there, so they don't have the analogous bugs.
Reported-by: NAlexander Viro <aviro@redhat.com>
Signed-off-by: NRoland McGrath <roland@redhat.com>

The kdb code should not toggle the sysrq state in case an end user
wants to try and resume the normal kernel execution.
Signed-off-by: NJason Wessel <jason.wessel@windriver.com>
Acked-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Immediately following an exit from the kdb shell the kgdb_connected
variable should be set to zero, unless there are breakpoints planted.
If the kgdb_connected variable is not zeroed out with kdb, it is
impossible to turn off kdb.

This patch is merely a work around for now, the real fix will check
for the breakpoints.
Signed-off-by: NJason Wessel <jason.wessel@windriver.com>

In the process of merging kdb to the mainline, the kdb lsmod command
stopped printing the base load address of kernel modules.  This is
needed for using kdb in conjunction with external tools such as gdb.

Simply restore the functionality by adding a kdb_printf for the base
load address of the kernel modules.
Signed-off-by: NJason Wessel <jason.wessel@windriver.com>

The gdbserial protocol handler should return an empty packet instead
of an error string when ever it responds to a command it does not
implement.

The problem cases come from a debugger client sending
qTBuffer, qTStatus, qSearch, qSupported.

The incorrect response from the gdbstub leads the debugger clients to
not function correctly.  Recent versions of gdb will not detach correctly as a result of this behavior.
Signed-off-by: NJason Wessel <jason.wessel@windriver.com>
Signed-off-by: NDongdong Deng <dongdong.deng@windriver.com>

Without this patch the "ll" linked-list traversal command won't
terminate when you hit q/Q.
Signed-off-by: NMartin Hicks <mort@sgi.com>
Signed-off-by: NJason Wessel <jason.wessel@windriver.com>

Return the crtc_id, not the counter value.  They are not
necessarily the same.

Cc: Jerome Glisse <glisse@freedesktop.org>
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

The commit 1e8655f8
    drm/ttm: Fix build on architectures without AGP

looks at TTM_HAS_AGP before it has been set in ttm_bo_driver.h

Move the conditional inclusion of <asm/agp.h> *after* we have included
ttm_bo_driver.h
Signed-of-by: NTony Luck <tony.luck@intel.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Add delay after turning off the LVDS encoder.

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=16389Tested-by: NJan Kreuzer <kontrollator@gmx.de>
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>

We only add/remove crtcs at driver load, you cannot remove when
the GPU is running a CS packet since the fd is open, when
GPU hotplugging on radeons actually is needed all this locking
needs a review and I've started re-working kms core locking to deal
with this better. But for now avoid long delays in CS processing when
hotplug detect is happening in a different thread.

this fixes a regression introduced with hotplug detection.
Signed-off-by: NDave Airlie <airlied@redhat.com>

* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
  pcmcia: fix 'driver ... did not release config properly' warning

* 'shrinker' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/xfsdev:
  mm: add context argument to shrinker callback to remaining shrinkers

* 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ASoC: Select wm_hubs automatically for WM8994
  ASoC: Remove duplicate AUX definition from WM8776
  ASoC:: remove a redundant snd_soc_unregister_codec call in wm8988_register
  ASoC: wm8727: add a missing return in wm8727_platform_probe
  ASoC: fsi: fixup wrong value setting order of TDM
  ASoC: fsi: fixup clock inversion operation

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  math-emu: correct test for downshifting fraction in _FP_FROM_INT()
  perf: Add DWARF register lookup for sparc
  MAINTAINERS: Add SBUS driver path to sparc entry.
  drivers/sbus: Remove unnecessary casts of private_data
  sparc: remove homegrown L1_CACHE_ALIGN macro
  sparc64: fix the build error due to smp_kgdb_capture_client()
  sparc64: Fix maybe_change_configuration() PCR setting.
  arch/sparc/kernel: Eliminate what looks like a NULL pointer dereference
  sparc64: Update defconfig.
  sunsu: Fix use after free in su_remove().
  sunserial: Don't call add_preferred_console() when console= is specified.
  sparc32: Kill none_mask, it's bogus.

Pointed out by Lucas who found the new one in a comment in
setup_percpu.c. And then I fixed the others that I grepped
for.
Reported-by: NLucas <canolucas@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Up to 2.6.34 pcmcia_release_irq() reset p_dev->_irq to 0 after releasing
the irq.  The IRQ is now released in pcmcia_disable_device(), however
p_dev->_irq is not reset, triggering a warning in pcmcia_device_remove().
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>

Add the shrinkers missed in the first conversion of the API in
commit 7f8275d0 ("mm: add context argument to
shrinker callback").
Signed-off-by: NDave Chinner <dchinner@redhat.com>

The Nokia RX51 board code (arch/arm/mach-omap2/board-rx51-peripherals.c)
defines a key map for the matrix keypad keyboard. The hardware seems to
use all of the 8 rows and 8 columns of the keypad, although not all
possible locations are used.

The TWL4030 supports keypads with at most 8 rows and 8 columns. Most keys
are defined with a row and column number between 0 and 7, except

        KEY(0xff, 2, KEY_F9),
        KEY(0xff, 4, KEY_F10),
        KEY(0xff, 5, KEY_F11),

which represent keycodes that should be emitted when entire row is
connected to the ground.  since the driver handles this case as if we
had an extra column in the key matrix. Unfortunately we do not allocate
enough space and end up owerwriting some random memory.
Reported-and-tested-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Otherwise we won't see any events from the gamepad.
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=16408Reported-and-tested-by: NEugene Yudin <eugene.yudin@gmail.com>
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

We moved input devices from 'struct gc' to individial pads (struct
gc-pad), but gc_nes_process_packet() was still trying to use old
ones and crashing.

Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The kernel's math-emu code contains a macro _FP_FROM_INT() which is
used to convert an integer to a raw normalized floating-point value.
It does this basically in three steps:

1. Compute the exponent from the number of leading zero bits.
2. Downshift large fractions to put the MSB in the right position
   for normalized fractions.
3. Upshift small fractions to put the MSB in the right position.

There is an boundary error in step 2, causing a fraction with its
MSB exactly one bit above the normalized MSB position to not be
downshifted.  This results in a non-normalized raw float, which when
packed becomes a massively inaccurate representation for that input.

The impact of this depends on a number of arch-specific factors,
but it is known to have broken emulation of FXTOD instructions
on UltraSPARC III, which was originally reported as GCC bug 44631
<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44631>.

Any arch which uses math-emu to emulate conversions from integers to
same-size floats may be affected.

The fix is simple: the exponent comparison used to determine if the
fraction should be downshifted must be "<=" not "<".

I'm sending a kernel module to test this as a reply to this message.
There are also SPARC user-space test cases in the GCC bug entry.
Signed-off-by: NMikael Pettersson <mikpe@it.uu.se>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/r600: fix possible NULL pointer derefernce
  drm/radeon/kms: add quirk for ASUS HD 3600 board
  include/linux/vgaarb.h: add missing part of include guard
  drm/nouveau: Fix crashes during fbcon init on single head cards.
  drm/nouveau: fix pcirom vbios shadow breakage from acpi rom patch
  drm/radeon/kms: fix shared ddc harder
  drm/i915: enable low power render writes on GEN3 hardware.
  drm/i915: Define MI_ARB_STATE bits
  vmwgfx: return -EFAULT if copy_to_user fails
  fb: handle allocation failure in alloc_apertures()
  drm: radeon: check kzalloc() result
  drm/ttm: Fix build on architectures without AGP
  drm/radeon/kms: fix gtt MC base alignment on rs4xx/rs690/rs740 asics
  drm/radeon/kms: fix possible mis-detection of sideport on rs690/rs740
  drm/radeon/kms: fix legacy tv-out pal mode

Reported-by: NAlexander Y. Fomichev <git.user@gmail.com>
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>