9 years agomemcg: fix prepare migration
Andrea Arcangeli [Fri, 23 Apr 2010 17:17:39 +0000]
memcg: fix prepare migration

If a signal is pending (task being killed by sigkill)
__mem_cgroup_try_charge will write NULL into &mem, and css_put will oops
on null pointer dereference.

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
  IP: [<ffffffff810fc6cc>] mem_cgroup_prepare_migration+0x7c/0xc0
  PGD a5d89067 PUD a5d8a067 PMD 0
  Oops: 0000 [#1] SMP
  last sysfs file: /sys/devices/platform/microcode/firmware/microcode/loading
  CPU 0
  Modules linked in: nfs lockd nfs_acl auth_rpcgss sunrpc acpi_cpufreq pcspkr sg [last unloaded: microcode]

  Pid: 5299, comm: largepages Tainted: G        W  2.6.34-rc3 #3 Penryn1600SLI-110dB/To Be Filled By O.E.M.
  RIP: 0010:[<ffffffff810fc6cc>]  [<ffffffff810fc6cc>] mem_cgroup_prepare_migration+0x7c/0xc0

[nishimura@mxp.nes.nec.co.jp: fix merge issues]
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoreiserfs: fix permissions on .reiserfs_priv
Jeff Mahoney [Fri, 23 Apr 2010 17:17:37 +0000]
reiserfs: fix permissions on .reiserfs_priv

Commit 677c9b2e393a0cd203bd54e9c18b012b2c73305a ("reiserfs: remove
privroot hiding in lookup") removed the magic from the lookup code to hide
the .reiserfs_priv directory since it was getting loaded at mount-time
instead.  The intent was that the entry would be hidden from the user via
a poisoned d_compare, but this was faulty.

This introduced a security issue where unprivileged users could access and
modify extended attributes or ACLs belonging to other users, including
root.

This patch resolves the issue by properly hiding .reiserfs_priv.  This was
the intent of the xattr poisoning code, but it appears to have never
worked as expected.  This is fixed by using d_revalidate instead of
d_compare.

This patch makes -oexpose_privroot a no-op.  I'm fine leaving it this way.
The effort involved in working out the corner cases wrt permissions and
caching outweigh the benefit of the feature.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: Edward Shishkin <edward.shishkin@gmail.com>
Reported-by: Matt McCutchen <matt@mattmccutchen.net>
Tested-by: Matt McCutchen <matt@mattmccutchen.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Fri, 23 Apr 2010 17:40:36 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda: Use STAC_DELL_M6_BOTH quirk for Dell Studio 1558
  ALSA: hda: Use LPIB quirk for DG965OT board version AAD63733-203
  ALSA: snd-meastro3: Ignore spurious HV interrupts during suspend / resume
  ALSA: snd-meastro3: Add amp_gpio quirk for Compaq EVO N600C
  ALSA: hda: Use ALC880_F1734 quirk for Fujitsu Siemens AMILO Xi 1526
  ALSA: hda: Use STAC_DELL_M6_BOTH quirk for Dell Studio XPS 1645
  ALSA: hda - Fix resume from StR of HP 2510p with docking-station

9 years agoCleanup generic block based fiemap
Josef Bacik [Fri, 23 Apr 2010 16:17:17 +0000]
Cleanup generic block based fiemap

This cleans up a few of the complaints of __generic_block_fiemap.  I've
fixed all the typing stuff, used inline functions instead of macros,
gotten rid of a couple of variables, and made sure the size and block
requests are all block aligned.  It also fixes a problem where sometimes
FIEMAP_EXTENT_LAST wasn't being set properly.

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agodrm/i915: fix non-Ironlake 965 class crashes
Jesse Barnes [Fri, 23 Apr 2010 16:32:23 +0000]
drm/i915: fix non-Ironlake 965 class crashes

My PIPE_CONTROL fix (just sent via Eric's tree) was buggy; I was
testing a whole set of patches together and missed a conversion to the
new HAS_PIPE_CONTROL macro, which will cause breakage on non-Ironlake
965 class chips.  Fortunately, the fix is trivial and has been tested.

Be sure to use the HAS_PIPE_CONTROL macro in i915_get_gem_seqno, or
we'll end up reading the wrong graphics memory, likely causing hangs,
crashes, or worse.

Reported-by: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Reported-by: Toralf Förster <toralf.foerster@gmx.de>
Tested-by: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge branch 'fix/misc' into for-linus
Takashi Iwai [Fri, 23 Apr 2010 15:10:48 +0000]
Merge branch 'fix/misc' into for-linus

9 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Fri, 23 Apr 2010 15:10:44 +0000]
Merge branch 'fix/hda' into for-linus

9 years agoALSA: hda: Use STAC_DELL_M6_BOTH quirk for Dell Studio 1558
Daniel T Chen [Thu, 22 Apr 2010 21:54:45 +0000]
ALSA: hda: Use STAC_DELL_M6_BOTH quirk for Dell Studio 1558

BugLink: https://launchpad.net/bugs/568600

The OR has verified that the dell-m6 model quirk is necessary for audio
to be audible by default on the Dell Studio XPS 1645.

This change is necessary for 2.6.32.11 and 2.6.33.2 alike.

Reported-by: Andy Ross <andy@plausible.org>
Tested-by: Andy Ross <andy@plausible.org>
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years agoALSA: hda: Use LPIB quirk for DG965OT board version AAD63733-203
Daniel T Chen [Wed, 21 Apr 2010 23:55:43 +0000]
ALSA: hda: Use LPIB quirk for DG965OT board version AAD63733-203

BugLink: https://launchpad.net/bugs/459083

The OR has verified with 2.6.32.11 and the latest alsa-driver stable
daily snapshot that position_fix=1 is necessary for the external mic
to work and for PulseAudio not to crash constantly.

This patch is necessary also for 2.6.32.11 and 2.6.33.2.

Reported-by: <imwithid@yahoo.com>
Tested-by: <imwithid@yahoo.com>
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Fri, 23 Apr 2010 02:46:29 +0000]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: ensure NCQ error result taskfile is fully initialized before returning it via qc->result_tf.
  libata: fix docs, RE port and device of libata.force ID separated by point
  pata_pcmcia/ide-cs: add IDs for transcend and kingston cards
  libata: fix locking around blk_abort_request()

9 years agolibata: ensure NCQ error result taskfile is fully initialized
Jeff Garzik [Fri, 23 Apr 2010 01:59:13 +0000]
libata: ensure NCQ error result taskfile is fully initialized
before returning it via qc->result_tf.

Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

9 years agolibata: fix docs, RE port and device of libata.force ID separated by point
Roman Fietze [Wed, 21 Apr 2010 10:17:12 +0000]
libata: fix docs, RE port and device of libata.force ID separated by point

According to libata-core correctly around line 6572:

/* parse id */
p = strchr(id, '.');
...

the optional device is separated from the port in the libata.force ID
by a point or dot instead of by a colon.

Fix documentation to reflect this.

Signed-off-by: Roman Fietze <roman.fietze@telemotive.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

9 years agopata_pcmcia/ide-cs: add IDs for transcend and kingston cards
Kristoffer Ericson [Mon, 19 Apr 2010 17:54:11 +0000]
pata_pcmcia/ide-cs: add IDs for transcend and kingston cards

This patch adds idstrings for Kingston 1GB/4GB and Transcend 4GB/8GB.

Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

9 years agolibata: fix locking around blk_abort_request()
Tejun Heo [Wed, 14 Apr 2010 23:57:37 +0000]
libata: fix locking around blk_abort_request()

blk_abort_request() expectes queue lock to be held by the caller.
Grab it before calling the function.

Lack of this synchronization led to infinite loop on corrupt
q->timeout_list.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
Linus Torvalds [Fri, 23 Apr 2010 01:24:37 +0000]
Merge git://git./linux/kernel/git/gregkh/usb-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  usb: Increase timeout value for device reset
  USB: put claimed interfaces in the "suspended" state
  USB: EHCI: defer reclamation of siTDs
  USB: fix remote wakeup settings during system sleep
  USB: pl2303: add AdLink ND-6530 USB IDs
  USB: Add id for HP ev2210 a.k.a Sierra MC5725 miniPCI-e Cell Modem.
  USB: OHCI: DA8xx/OMAP-L1x: fix up macro rename
  USB: qcaux: add LG Rumor and Sanyo Katana LX device IDs
  usb: wusb: don't overflow the Keep Alive IE buffer
  USB: ehci: omap: fix kernel panic with rmmod
  USB: fixed bug in usbsevseg using USB autosuspend incorrectly
  USB: ti_usb_3410_5052: adding multitech dialup fax/modem devices

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
Linus Torvalds [Fri, 23 Apr 2010 01:24:27 +0000]
Merge git://git./linux/kernel/git/gregkh/driver-core-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  sysfs: use sysfs_attr_init in ASUS atk0110 driver
  Documentation/HOWTO: update git home URL
  Documentation: -stable rules: upstream commit ID requirement reworded

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt...
Linus Torvalds [Fri, 23 Apr 2010 01:24:06 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/anholt/drm-intel

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel:
  drm/i915: use PIPE_CONTROL instruction on Ironlake and Sandy Bridge
  drm/i915: cleanup FBC buffers at unload time
  drm/i915: fix tiling limits for i915 class hw v2
  drm/i915: set DIDL using the ACPI video output device _ADR method return.
  drm/i915: Fix 82854 PCI ID, and treat it like other 85X
  drm/i915: Attempt to fix watermark setup on 85x (v2)

9 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Fri, 23 Apr 2010 01:21:38 +0000]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md/raid5: fix previous patch.

9 years agosysfs: use sysfs_attr_init in ASUS atk0110 driver
Jiri Kosina [Thu, 15 Apr 2010 00:45:25 +0000]
sysfs: use sysfs_attr_init in ASUS atk0110 driver

Annotate dynamic sysfs attribute in atk_create_files(). This gets
rid of the following lockdep warning:

 BUG: key ffff8800379ca670 not in .data!
 ------------[ cut here ]------------
 WARNING: at kernel/lockdep.c:2696 lockdep_init_map+0xd2/0x108()
 Hardware name: P5K PRO
 Modules linked in: asus_atk0110(+) pata_acpi firewire_ohci ata_generic
 dm_multipath firewire_core crc_itu_t pata_marvell floppy
 Pid: 599, comm: modprobe Not tainted 2.6.34-rc4 #27
 Call Trace:
  [<ffffffff8104cdb0>] warn_slowpath_common+0x7c/0x94
  [<ffffffff8104cddc>] warn_slowpath_null+0x14/0x16
  [<ffffffff81077c4d>] lockdep_init_map+0xd2/0x108
  [<ffffffff81165873>] sysfs_add_file_mode+0x66/0xa2
  [<ffffffff811658c0>] sysfs_add_file+0x11/0x13
  [<ffffffff8116594b>] sysfs_create_file+0x2a/0x2c
  [<ffffffff812c1f9c>] device_create_file+0x19/0x1b
  [<ffffffffa005b4fd>] atk_add+0x58b/0x72e [asus_atk0110]
  [<ffffffff812572a1>] acpi_device_probe+0x50/0x122
  [<ffffffff812c46af>] driver_probe_device+0xa2/0x127
  [<ffffffff812c4783>] __driver_attach+0x4f/0x6b
  [<ffffffff812c4734>] ? __driver_attach+0x0/0x6b
  [<ffffffff812c3c94>] bus_for_each_dev+0x59/0x8e
  [<ffffffff812c4519>] driver_attach+0x1e/0x20
  [<ffffffff812c4152>] bus_add_driver+0xb9/0x207
  [<ffffffff812c4a5f>] driver_register+0x9d/0x10e
  [<ffffffffa005f000>] ? atk0110_init+0x0/0x31 [asus_atk0110]
  [<ffffffff81257c7c>] acpi_bus_register_driver+0x43/0x45
  [<ffffffffa005f015>] atk0110_init+0x15/0x31 [asus_atk0110]
  [<ffffffffa005f000>] ? atk0110_init+0x0/0x31 [asus_atk0110]
  [<ffffffff81002069>] do_one_initcall+0x5e/0x15e
  [<ffffffff81085075>] sys_init_module+0xd8/0x239
  [<ffffffff81009cf2>] system_call_fastpath+0x16/0x1b
 ---[ end trace 4d0c84007055efb9 ]---
 BUG: key ffff8800379ca638 not in .data!
 BUG: key ffff8800379ca6a8 not in .data!
 BUG: key ffff8800379ca6e0 not in .data!
 BUG: key ffff880036f73670 not in .data!
 BUG: key ffff880036f73638 not in .data!
 BUG: key ffff880036f736a8 not in .data!
 BUG: key ffff880036f736e0 not in .data!
 BUG: key ffff880036f76c70 not in .data!
 BUG: key ffff880036f76c38 not in .data!
 BUG: key ffff880036f76ca8 not in .data!
 BUG: key ffff880036f76ce0 not in .data!
 BUG: key ffff8800368e7670 not in .data!
 BUG: key ffff8800368e7638 not in .data!
 BUG: key ffff8800368e76a8 not in .data!
 BUG: key ffff8800368e76e0 not in .data!
 BUG: key ffff880036ef7670 not in .data!
 BUG: key ffff880036ef7638 not in .data!
 BUG: key ffff880036ef76a8 not in .data!
 BUG: key ffff880036ef76e0 not in .data!
 BUG: key ffff8800373ccc70 not in .data!
 BUG: key ffff8800373ccc38 not in .data!
 BUG: key ffff8800373ccca8 not in .data!
 BUG: key ffff8800373ccce0 not in .data!
 BUG: key ffff880037a60870 not in .data!
 BUG: key ffff880037a60838 not in .data!
 BUG: key ffff880037a608a8 not in .data!
 BUG: key ffff880037a608e0 not in .data!
 BUG: key ffff880037355070 not in .data!
 BUG: key ffff880037355038 not in .data!
 BUG: key ffff8800373550a8 not in .data!
 BUG: key ffff8800373550e0 not in .data!
 BUG: key ffff8800378c2670 not in .data!
 BUG: key ffff8800378c2638 not in .data!
 BUG: key ffff8800378c26a8 not in .data!
 BUG: key ffff8800378c26e0 not in .data!
 BUG: key ffff880036ef7e70 not in .data!
 BUG: key ffff880036ef7e38 not in .data!
 BUG: key ffff880036ef7ea8 not in .data!
 BUG: key ffff880036ef7ee0 not in .data!

Cc: Eric W. Biederman <ebiederm@xmission.com>
Reported-by: Dhaval Giani <dhaval.giani@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Tested-by: Dhaval Giani <dhaval.giani@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoDocumentation/HOWTO: update git home URL
Randy Dunlap [Tue, 6 Apr 2010 23:16:59 +0000]
Documentation/HOWTO: update git home URL

Update git home page info.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoDocumentation: -stable rules: upstream commit ID requirement reworded
Stefan Richter [Thu, 1 Apr 2010 20:01:52 +0000]
Documentation: -stable rules: upstream commit ID requirement reworded

It is a hard requirement to include the upstream commit ID in the
changelog of a -stable submission, not just a courtesy to the stable
team.  This concerns only mail submission though, which is no longer
the only way into stable.  (Also, fix a double "the".)

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: Increase timeout value for device reset
Dinh Nguyen [Tue, 13 Apr 2010 16:13:15 +0000]
usb: Increase timeout value for device reset

It seems that for USB IP on Freescale MX5x processors, it needs >750
usec for the reset to complete. This change should not hurt any other
EHCI hardware.

Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: put claimed interfaces in the "suspended" state
Alan Stern [Fri, 9 Apr 2010 20:03:43 +0000]
USB: put claimed interfaces in the "suspended" state

This patch (as1370) fixes a bug in the USB runtime power management
code.  When a driver claims an interface, it doesn't expect to need to
call usb_autopm_get_interface() or usb_autopm_put_interface() for
runtime PM to work.  Runtime PM can be controlled by the driver's
primary interface; the additional interfaces it claims shouldn't
interfere.  As things stand, the claimed interfaces will prevent the
device from autosuspending.

To fix this problem, the patch sets interfaces to the suspended state
when they are claimed.

Also, although in theory this shouldn't matter, the patch changes the
suspend code so that interfaces are suspended in reverse order from
detection and resuming.  This is how the PM core works, and we ought
to use the same approach.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Debugged-and-tested-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: EHCI: defer reclamation of siTDs
Alan Stern [Thu, 8 Apr 2010 20:56:37 +0000]
USB: EHCI: defer reclamation of siTDs

This patch (as1369) fixes a problem in ehci-hcd.  Some controllers
occasionally run into trouble when the driver reclaims siTDs too
quickly.  This can happen while streaming audio; it causes the
controller to crash.

The patch changes siTD reclamation to work the same way as iTD
reclamation: Completed siTDs are stored on a list and not reused until
at least one frame has passed.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Nate Case <ncase@xes-inc.com>
CC: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: fix remote wakeup settings during system sleep
Alan Stern [Fri, 2 Apr 2010 17:20:11 +0000]
USB: fix remote wakeup settings during system sleep

This patch (as1363) changes the way USB remote wakeup is handled
during system sleeps.  It won't be enabled unless an interface driver
specifically needs it.  Also, it won't be enabled during the FREEZE or
QUIESCE phases of hibernation, when the system doesn't respond to
wakeup events anyway.  Finally, if the device is already
runtime-suspended with remote wakeup enabled, but wakeup is supposed
to be disabled for the system sleep, the device gets woken up so that
it can be suspended again with the proper wakeup setting.

This will fix problems people have reported with certain USB webcams
that generate wakeup requests when they shouldn't, and as a result
cause system suspends to fail.  See

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/515109

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Erik Andrén <erik.andren@gmail.com>
CC: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: pl2303: add AdLink ND-6530 USB IDs
Manuel Jander [Mon, 29 Mar 2010 21:51:57 +0000]
USB: pl2303: add AdLink ND-6530 USB IDs

I read a rumor that the AdLink ND6530 USB RS232, RS422 and RS485
isolated adapter is actually a PL2303 based usb serial adapter. I
tried it out, and as far as I can tell it works.

Signed-off-by: Manuel Jander <manuel.jander@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: Add id for HP ev2210 a.k.a Sierra MC5725 miniPCI-e Cell Modem.
William Lightning [Fri, 26 Mar 2010 17:51:20 +0000]
USB: Add id for HP ev2210 a.k.a Sierra MC5725 miniPCI-e Cell Modem.

Signed-off-by: William Lightning <kassah@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: OHCI: DA8xx/OMAP-L1x: fix up macro rename
Sergei Shtylyov [Fri, 26 Mar 2010 14:37:14 +0000]
USB: OHCI: DA8xx/OMAP-L1x: fix up macro rename

It appears that the DA8xx/OMAP-L1x glue layer went into the kernel uncompilable:
commit 1960e693ac12ae5fe518309d6a63a44c93fad9e7 (davinci: da8xx/omapl1: add
support for the second sysconfig module) has renamed DA8XX_SYSCFG_* macros to
DA8XX_SYSCFG0_* and it's been committed before the glue layer...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: qcaux: add LG Rumor and Sanyo Katana LX device IDs
Dan Williams [Tue, 23 Mar 2010 10:08:48 +0000]
USB: qcaux: add LG Rumor and Sanyo Katana LX device IDs

These phones also have the familiar ttyACM0/ttyUSB0 schizophrenia when
placed into "Dial-up Networking" mode after connecting a USB cable.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: wusb: don't overflow the Keep Alive IE buffer
David Vrabel [Mon, 22 Mar 2010 14:50:14 +0000]
usb: wusb: don't overflow the Keep Alive IE buffer

The Keep Alive IE only has space for WUIE_ELT_MAX (== 4) device addresses.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: ehci: omap: fix kernel panic with rmmod
Ajay Kumar Gupta [Thu, 18 Mar 2010 11:28:35 +0000]
USB: ehci: omap: fix kernel panic with rmmod

Sets the regulator values to NULL if they are not defined. This
is required to fix the kernel panic in exit path when EHCI module
is removed on the platforms where EHCI regulator are not set.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: fixed bug in usbsevseg using USB autosuspend incorrectly
Harrison Metzger [Tue, 9 Mar 2010 20:12:10 +0000]
USB: fixed bug in usbsevseg using USB autosuspend incorrectly

This patch fixes a bug with the usbsevseg driver which assumed that USB
autosuspend will always be used.

Signed-off-by: Harrison Metzger <harrisonmetz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: ti_usb_3410_5052: adding multitech dialup fax/modem devices
Alex Manoussakis [Thu, 22 Apr 2010 22:18:20 +0000]
USB: ti_usb_3410_5052: adding multitech dialup fax/modem devices

The following patch adds support for Multitech Systems' MT9234MU and
MT9234ZBA usb dialup fax modems. It is based on a patch and firmware
provided to me by Multitech Systems' support, after I reported to them
that my MT9234MU modem was not working with recent linux kernels.

Signed-off-by: Alex Manoussakis <alex@juniper.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agodrm/i915: use PIPE_CONTROL instruction on Ironlake and Sandy Bridge
Jesse Barnes [Wed, 21 Apr 2010 18:39:23 +0000]
drm/i915: use PIPE_CONTROL instruction on Ironlake and Sandy Bridge

Since 965, the hardware has supported the PIPE_CONTROL command, which
provides fine grained GPU cache flushing control.  On recent chipsets,
this instruction is required for reliable interrupt and sequence number
reporting in the driver.

So add support for this instruction, including workarounds, on Ironlake
and Sandy Bridge hardware.

https://bugs.freedesktop.org/show_bug.cgi?id=27108

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>

9 years agomd/raid5: fix previous patch.
NeilBrown [Thu, 22 Apr 2010 21:08:28 +0000]
md/raid5: fix previous patch.

Previous patch changes stripe and chunk_number to sector_t but
mistakenly did not update all of the divisions to use sector_dev().

This patch changes all the those divisions (actually the '%' operator)
to sector_div.

Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@kernel.org
Tested-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>

9 years agodrm/i915: cleanup FBC buffers at unload time
Jesse Barnes [Wed, 21 Apr 2010 18:39:22 +0000]
drm/i915: cleanup FBC buffers at unload time

This keeps the memory manager from complaining when we take it down.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Thu, 22 Apr 2010 19:54:54 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: ohci: wait for local CSR lock access to finish
  firewire: ohci: prevent aliasing of locally handled register addresses
  firewire: core: fw_iso_resource_manage: return -EBUSY when out of resources
  firewire: core: fix retries calculation in iso manage_channel()
  firewire: cdev: fix cut+paste mistake in disclaimer

9 years agodri-devel mailing list moved - update MAINTAINERS
Valdis.Kletnieks@vt.edu [Thu, 22 Apr 2010 18:29:10 +0000]
dri-devel mailing list moved - update MAINTAINERS

I posted to dri-devel@lists.sourceforge.net, and got a bounce back:

   The dri-devel list has moved to freedesktop.org (see
   http://lists.freedesktop.org/mailman/listinfo/dri-devel). If you were
   subscribed to the list here, the subscription should have been
   transferred to the new location.

   Please only post to the new list.

Fix MAINTAINERS to correspond.

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge branch 'slabh' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc
Linus Torvalds [Thu, 22 Apr 2010 18:15:33 +0000]
Merge branch 'slabh' of git://git./linux/kernel/git/tj/misc

* 'slabh' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc:
  uml: Fix build breakage after slab.h changes

9 years agoscsi: fix operator precedence warning
Randy Dunlap [Thu, 22 Apr 2010 18:02:14 +0000]
scsi: fix operator precedence warning

Fix operator precedence warning (from sparse), which results in the
data value always being 0:

drivers/scsi/qla4xxx/ql4_mbx.c:470:66: warning: right shift by bigger than source value

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Ravi Anand <ravi.anand@qlogic.com>
Cc: David C Somayajulu <david.somayajulu@qlogic.com>
Cc: Karen Higgins <karen.higgins@qlogic.com>
Cc: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Thu, 22 Apr 2010 15:43:59 +0000]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] zcore: Fix reipl device detection
  [S390] vdso: use ntp adjusted clock multiplier
  [S390] cio: use exception-save stsch
  [S390] add hook to reenable mss after hibernation
  [S390] cio: allow enable_facility from outside init functions
  [S390] dasd: fix endless loop in erp

9 years ago[S390] zcore: Fix reipl device detection
Michael Holzheu [Thu, 22 Apr 2010 15:17:07 +0000]
[S390] zcore: Fix reipl device detection

The reipl device information is passed from the kernel to zfcpdump
using a pointer in the lowcore (0xe00) that points to the reipl
information Currently if that pointer is not zero, we copy the reipl
information. If the pointer is not initialized and points outside
the accessible memory, it can happen that the memory copy fails.
In that case we currently stop the initialization of zcore which leads
to a failing kernel dump. The correct behavior is to disable the reipl
after dump and continue with zcore intialization.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

9 years ago[S390] vdso: use ntp adjusted clock multiplier
Hendrik Brueckner [Thu, 22 Apr 2010 15:17:06 +0000]
[S390] vdso: use ntp adjusted clock multiplier

Commit "timekeeping: Fix clock_gettime vsyscall time warp" (0696b711e)
introduced the new parameter "mult" to update_vsyscall(). This parameter
contains the internal NTP adjusted clock multiplier.

The s390x vdso did not use this adjusted multiplier.  Instead, it used
the constant clock multiplier for gettimeofday() and clock_gettime()
variants.  This may result in observable time warps as explained in
commit 0696b711e.

Make the NTP adjusted clock multiplier available to the s390x vdso
implementation and use it for time calculations.

Cc: <stable@kernel.org>
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

9 years ago[S390] cio: use exception-save stsch
Sebastian Ott [Thu, 22 Apr 2010 15:17:05 +0000]
[S390] cio: use exception-save stsch

Using stsch on schids with ssid != 0 can lead to an operand
exception. Use stsch_err to handle potential exceptions
if we fail to reenable mss after hibernation.

Cc: <stable@kernel.org>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

9 years ago[S390] add hook to reenable mss after hibernation
Sebastian Ott [Thu, 22 Apr 2010 15:17:04 +0000]
[S390] add hook to reenable mss after hibernation

Reenable multiple subchannel sets after hibernation,
prior to the device callbacks.

Cc: <stable@kernel.org>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

9 years ago[S390] cio: allow enable_facility from outside init functions
Sebastian Ott [Thu, 22 Apr 2010 15:17:03 +0000]
[S390] cio: allow enable_facility from outside init functions

Prepare chsc_enable_facility to be used from outside init functions.
Use static memory for the chsc call and protect its access by a
spinlock (although there is no concurrent usage).

Cc: <stable@kernel.org>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

9 years ago[S390] dasd: fix endless loop in erp
Stefan Haberland [Thu, 22 Apr 2010 15:17:02 +0000]
[S390] dasd: fix endless loop in erp

If not enough memory is available to build a new erp request it ended
up in an endless loop trying to build erp requests. Fixed the loop to
proceed the next request instead.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

9 years agoALSA: snd-meastro3: Ignore spurious HV interrupts during suspend / resume
Hans de Goede [Wed, 21 Apr 2010 15:04:08 +0000]
ALSA: snd-meastro3: Ignore spurious HV interrupts during suspend / resume

Ignore spurious HV interrupts during suspend / resume, this avoids
mistaking them for a mute button press. This is not very pretty but
it seems the only way to fix the master volume control gets muted
after suspend issue I'm seeing. Note that the es1968 driver is doing
exactly the same.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years agoALSA: snd-meastro3: Add amp_gpio quirk for Compaq EVO N600C
Hans de Goede [Wed, 21 Apr 2010 15:04:06 +0000]
ALSA: snd-meastro3: Add amp_gpio quirk for Compaq EVO N600C

Without this quirk sound stops working after suspend resume. With this quirk,
one still needs to manually unmute the master volume control after a suspend /
/ resume cycle. That is fixed in another patch in this set.

Note that this patch was submitted to the alsa bug tracker a long time ago:
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4319

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
CC: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
Linus Torvalds [Thu, 22 Apr 2010 14:50:11 +0000]
Merge git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] bnx2i: Bug fixes related to MTU change issue when there are active iscsi sessions
  [SCSI] ibmvscsi: fix DMA API misuse
  [SCSI] wd7000: fix reset handler typo spin_unlock_irq() => spin_lock_irq()
  [SCSI] zfcp: Fix tracing of requests with error status
  [SCSI] zfcp: Update MAINTAINERS entry
  [SCSI] iscsi_tcp: fix relogin/shutdown hang
  [SCSI] qla2xxx: fix lock imbalance
  [SCSI] lpfc: fix lock imbalances
  [SCSI] be2iscsi: fix lock imbalance
  [SCSI] dpt_i2o: several use after free issues

9 years agovirtio: Fix GFP flags passed from the virtio balloon driver
Balbir Singh [Thu, 22 Apr 2010 02:52:34 +0000]
virtio: Fix GFP flags passed from the virtio balloon driver

The virtio balloon driver can dig into the reservation pools of the OS
to satisfy a balloon request.  This is not advisable and other balloon
drivers (drivers/xen/balloon.c) avoid this as well.

The patch also adds changes to avoid printing a warning if allocation
fails, since we retry after sometime anyway.

Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: kvm <kvm@vger.kernel.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge branch 'for-linus/i2c' of git://git.fluff.org/bjdooks/linux
Linus Torvalds [Thu, 22 Apr 2010 14:20:30 +0000]
Merge branch 'for-linus/i2c' of git://git.fluff.org/bjdooks/linux

* 'for-linus/i2c' of git://git.fluff.org/bjdooks/linux:
  i2c-stu300: off by one issue
  i2c-pnx: Add stop conditions for end of transfer
  i2c-pnx: Limit maximum divider to 1023
  i2c-omap: fix OOPS in omap_i2c_unidle() during probe
  i2c-imx: fix error handling

9 years agostaging: fix dt3155 build
Randy Dunlap [Wed, 21 Apr 2010 21:32:47 +0000]
staging: fix dt3155 build

When the dt3155 driver is built-in (not as a loadable module),
these build errors happen:

  drivers/staging/dt3155/dt3155_drv.c:1047: error: implicit declaration of function 'request_irq'
  drivers/staging/dt3155/dt3155_drv.c:1048: error: 'IRQF_SHARED' undeclared (first use in this function)
  drivers/staging/dt3155/dt3155_drv.c:1048: error: 'IRQF_DISABLED' undeclared (first use in this function)
  drivers/staging/dt3155/dt3155_drv.c:1091: error: implicit declaration of function 'free_irq'

so remove the #ifdef MODULE check since it's not needed.  Also remove
the CONFIG_PCI check since the Kconfig file already requires that.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Scott Smedley <ss@aao.gov.au>
Tested-by: Jan III Sobieski <jan3sobi3ski@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Thu, 22 Apr 2010 14:17:09 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  security: testing the wrong variable in create_by_name()
  CRED: Fix a race in creds_are_invalid() in credentials debugging
  CRED: Fix double free in prepare_usermodehelper_creds() error handling

9 years agoALSA: hda: Use ALC880_F1734 quirk for Fujitsu Siemens AMILO Xi 1526
Daniel T Chen [Thu, 22 Apr 2010 11:15:26 +0000]
ALSA: hda: Use ALC880_F1734 quirk for Fujitsu Siemens AMILO Xi 1526

BugLink: https://launchpad.net/bugs/567494

The OR has verified that the existing model quirk, ALC880_UNIWILL,
is insufficient for audible playback and capture by default. Instead,
the ALC880_F1734 model quirk needs to be used.

This change is necessary for both 2.6.32.11 and 2.6.33.2.

Reported-by: Arnaud Malpeyre <amalpeyre@gmail.com>
Tested-by: Arnaud Malpeyre <amalpeyre@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years agosecurity: testing the wrong variable in create_by_name()
Dan Carpenter [Thu, 22 Apr 2010 10:05:35 +0000]
security: testing the wrong variable in create_by_name()

There is a typo here.  We should be testing "*dentry" instead of
"dentry".  If "*dentry" is an ERR_PTR, it gets dereferenced in either
mkdir() or create() which would cause an OOPs.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: James Morris <jmorris@namei.org>

9 years agoALSA: hda: Use STAC_DELL_M6_BOTH quirk for Dell Studio XPS 1645
Daniel T Chen [Thu, 22 Apr 2010 00:41:52 +0000]
ALSA: hda: Use STAC_DELL_M6_BOTH quirk for Dell Studio XPS 1645

BugLink: https://launchpad.net/bugs/553002

The OR has verified that the dell-m6 model quirk is necessary for audio
to be audible by default on the Dell Studio XPS 1645.

This change is necessary for 2.6.32.11 and 2.6.33.2 alike.

Reported-by: Robert Chambers
Tested-by: Robert Chambers
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years agoCRED: Fix a race in creds_are_invalid() in credentials debugging
David Howells [Wed, 21 Apr 2010 09:28:25 +0000]
CRED: Fix a race in creds_are_invalid() in credentials debugging

creds_are_invalid() reads both cred->usage and cred->subscribers and then
compares them to make sure the number of processes subscribed to a cred struct
never exceeds the refcount of that cred struct.

The problem is that this can cause a race with both copy_creds() and
exit_creds() as the two counters, whilst they are of atomic_t type, are only
atomic with respect to themselves, and not atomic with respect to each other.

This means that if creds_are_invalid() can read the values on one CPU whilst
they're being modified on another CPU, and so can observe an evolving state in
which the subscribers count now is greater than the usage count a moment
before.

Switching the order in which the counts are read cannot help, so the thing to
do is to remove that particular check.

I had considered rechecking the values to see if they're in flux if the test
fails, but I can't guarantee they won't appear the same, even if they've
changed several times in the meantime.

Note that this can only happen if CONFIG_DEBUG_CREDENTIALS is enabled.

The problem is only likely to occur with multithreaded programs, and can be
tested by the tst-eintr1 program from glibc's "make check".  The symptoms look
like:

CRED: Invalid credentials
CRED: At include/linux/cred.h:240
CRED: Specified credentials: ffff88003dda5878 [real][eff]
CRED: ->magic=43736564, put_addr=(null)
CRED: ->usage=766, subscr=766
CRED: ->*uid = { 0,0,0,0 }
CRED: ->*gid = { 0,0,0,0 }
CRED: ->security is ffff88003d72f538
CRED: ->security {359, 359}
------------[ cut here ]------------
kernel BUG at kernel/cred.c:850!
...
RIP: 0010:[<ffffffff81049889>]  [<ffffffff81049889>] __invalid_creds+0x4e/0x52
...
Call Trace:
 [<ffffffff8104a37b>] copy_creds+0x6b/0x23f

Note the ->usage=766 and subscr=766.  The values appear the same because
they've been re-read since the check was made.

Reported-by: Roland McGrath <roland@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Linus Torvalds [Wed, 21 Apr 2010 19:33:12 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/gerg/m68knommu

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: allow 4 coldfire serial ports
  m68knommu: fix coldfire tcdrain
  m68knommu: remove a duplicate vector setting line for 68360
  Fix m68k-uclinux's rt_sigreturn trampoline
  m68knommu: correct the CC flags for Coldfire M5272 targets
  uclinux: error message when FLAT reloc symbol is invalid, v2

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
Linus Torvalds [Wed, 21 Apr 2010 19:31:52 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/lrg/voltage-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  mc13783-regulator: fix a memory leak in mc13783_regulator_remove
  regulator: Let drivers know when they use the stub API

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs
Linus Torvalds [Wed, 21 Apr 2010 19:31:12 +0000]
Merge git://git./linux/kernel/git/joern/logfs

* git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs:
  [LogFS] Split large truncated into smaller chunks
  [LogFS] Set s_bdi
  [LogFS] Prevent mempool_destroy NULL pointer dereference
  [LogFS] Move assertion
  [LogFS] Plug 8 byte information leak
  [LogFS] Prevent memory corruption on large deletes
  [LogFS] Remove unused method

Fix trivial conflict with added header includes in fs/logfs/super.c

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy...
Linus Torvalds [Wed, 21 Apr 2010 19:30:07 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/shaggy/jfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6:
  jfs: add jfs specific ->setattr call
  jfs: fix diAllocExt error in resizing filesystem
  jfs_dmap.[ch]: trivial typo fix: s/heigth/height/g

9 years agoMerge branch 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 21 Apr 2010 19:29:46 +0000]
Merge branch 'kvm-updates/2.6.34' of git://git./virt/kvm/kvm

* 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: Fix TSS size check for 16-bit tasks
  KVM: Add missing srcu_read_lock() for kvm_mmu_notifier_release()
  KVM: Increase NR_IOBUS_DEVS limit to 200
  KVM: fix the handling of dirty bitmaps to avoid overflows
  KVM: MMU: fix kvm_mmu_zap_page() and its calling path
  KVM: VMX: Save/restore rflags.vm correctly in real mode
  KVM: allow bit 10 to be cleared in MSR_IA32_MC4_CTL
  KVM: Don't spam kernel log when injecting exceptions due to bad cr writes
  KVM: SVM: Fix memory leaks that happen when svm_create_vcpu() fails
  KVM: take srcu lock before call to complete_pio()

9 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Wed, 21 Apr 2010 19:28:44 +0000]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md/raid5: allow for more than 2^31 chunks.

9 years agoAFS: Don't pass error value to page_cache_release() in error handling
David Howells [Wed, 21 Apr 2010 11:01:23 +0000]
AFS: Don't pass error value to page_cache_release() in error handling

In the error handling in afs_mntpt_do_automount(), we pass an error
pointer to page_cache_release() if read_mapping_page() failed.  Instead,
we should extend the gotos around the error handling we don't need.

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoKVM: x86: Fix TSS size check for 16-bit tasks
Jan Kiszka [Wed, 14 Apr 2010 14:57:11 +0000]
KVM: x86: Fix TSS size check for 16-bit tasks

A 16-bit TSS is only 44 bytes long. So make sure to test for the correct
size on task switch.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Add missing srcu_read_lock() for kvm_mmu_notifier_release()
Lai Jiangshan [Tue, 20 Apr 2010 06:29:29 +0000]
KVM: Add missing srcu_read_lock() for kvm_mmu_notifier_release()

I got this dmesg due to srcu_read_lock() is missing in
kvm_mmu_notifier_release().

===================================================
[ INFO: suspicious rcu_dereference_check() usage. ]
---------------------------------------------------
arch/x86/kvm/x86.h:72 invoked rcu_dereference_check() without protection!

other info that might help us debug this:

rcu_scheduler_active = 1, debug_locks = 0
2 locks held by qemu-system-x86/3100:
 #0:  (rcu_read_lock){.+.+..}, at: [<ffffffff810d73dc>] __mmu_notifier_release+0x38/0xdf
 #1:  (&(&kvm->mmu_lock)->rlock){+.+...}, at: [<ffffffffa0130a6a>] kvm_mmu_zap_all+0x21/0x5e [kvm]

stack backtrace:
Pid: 3100, comm: qemu-system-x86 Not tainted 2.6.34-rc3-22949-gbc8a97a-dirty #2
Call Trace:
 [<ffffffff8106afd9>] lockdep_rcu_dereference+0xaa/0xb3
 [<ffffffffa0123a89>] unalias_gfn+0x56/0xab [kvm]
 [<ffffffffa0119600>] gfn_to_memslot+0x16/0x25 [kvm]
 [<ffffffffa012ffca>] gfn_to_rmap+0x17/0x6e [kvm]
 [<ffffffffa01300c1>] rmap_remove+0xa0/0x19d [kvm]
 [<ffffffffa0130649>] kvm_mmu_zap_page+0x109/0x34d [kvm]
 [<ffffffffa0130a7e>] kvm_mmu_zap_all+0x35/0x5e [kvm]
 [<ffffffffa0122870>] kvm_arch_flush_shadow+0x16/0x22 [kvm]
 [<ffffffffa01189e0>] kvm_mmu_notifier_release+0x15/0x17 [kvm]
 [<ffffffff810d742c>] __mmu_notifier_release+0x88/0xdf
 [<ffffffff810d73dc>] ? __mmu_notifier_release+0x38/0xdf
 [<ffffffff81040848>] ? exit_mm+0xe0/0x115
 [<ffffffff810c2cb0>] exit_mmap+0x2c/0x17e
 [<ffffffff8103c472>] mmput+0x2d/0xd4
 [<ffffffff81040870>] exit_mm+0x108/0x115
[...]

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agom68knommu: allow 4 coldfire serial ports
Philippe De Muyter [Thu, 18 Mar 2010 10:37:13 +0000]
m68knommu: allow 4 coldfire serial ports

Fix driver/serial/mcf.c for 4-ports coldfire's (e.g. MCF5484).

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

9 years agom68knommu: fix coldfire tcdrain
Philippe De Muyter [Fri, 2 Apr 2010 15:56:08 +0000]
m68knommu: fix coldfire tcdrain

Fix tcdrain on coldfire uarts.
Currently with coldfire uarts tcdrain returns without waiting for txempty,
because (tx)fifosize is 0.  Fix that and call uart_update_timeout when
setting the baud rate, otherwise tcdrain will wait for an half our :)
Also constify mcf_uart_ops.

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

9 years agom68knommu: remove a duplicate vector setting line for 68360
Greg Ungerer [Fri, 19 Feb 2010 01:27:37 +0000]
m68knommu: remove a duplicate vector setting line for 68360

Remove a duplicate vector setting line for the 68360 interrupt
setup. Pointed out by Roel Kluin <roel.kluin@gmail.com>

Signed-off-by: Greg Ungerer <gerg@uclinux.org>

9 years agoFix m68k-uclinux's rt_sigreturn trampoline
Maxim Kuvyrkov [Tue, 22 Sep 2009 21:25:44 +0000]
Fix m68k-uclinux's rt_sigreturn trampoline

Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

9 years agom68knommu: correct the CC flags for Coldfire M5272 targets
Philip Nye [Tue, 12 Jan 2010 00:18:03 +0000]
m68knommu: correct the CC flags for Coldfire M5272 targets

Signed-off-by: Philip Nye <philipn@engarts.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

9 years agouclinux: error message when FLAT reloc symbol is invalid, v2
Jun Sun [Fri, 1 Jan 2010 01:28:52 +0000]
uclinux: error message when FLAT reloc symbol is invalid, v2

This patch fixes a cosmetic error in printk. Text segment and data/bss
segment are allocated from two different areas. It is not meaningful to
give the diff between them in the error reporting messages.

Signed-off-by: Jun Sun <jsun@junsun.net>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

9 years agoCRED: Fix double free in prepare_usermodehelper_creds() error handling
David Howells [Tue, 20 Apr 2010 21:41:18 +0000]
CRED: Fix double free in prepare_usermodehelper_creds() error handling

Patch 570b8fb505896e007fd3bb07573ba6640e51851d:

Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date:   Tue Mar 30 00:04:00 2010 +0100
Subject: CRED: Fix memory leak in error handling

attempts to fix a memory leak in the error handling by making the offending
return statement into a jump down to the bottom of the function where a
kfree(tgcred) is inserted.

This is, however, incorrect, as it does a kfree() after doing put_cred() if
security_prepare_creds() fails.  That will result in a double free if 'error'
is jumped to as put_cred() will also attempt to free the new tgcred record by
virtue of it being pointed to by the new cred record.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>

9 years ago[LogFS] Split large truncated into smaller chunks
Joern Engel [Tue, 20 Apr 2010 19:44:10 +0000]
[LogFS] Split large truncated into smaller chunks

Truncate would do an almost limitless amount of work without invoking
the garbage collector in between.  Split it up into more manageable,
though still large, chunks.

Signed-off-by: Joern Engel <joern@logfs.org>

9 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...
Linus Torvalds [Tue, 20 Apr 2010 16:39:40 +0000]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-fs-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6:
  quota: Convert __DQUOT_PARANOIA symbol to standard config option

9 years agoquota: Convert __DQUOT_PARANOIA symbol to standard config option
Jan Kara [Mon, 19 Apr 2010 14:47:20 +0000]
quota: Convert __DQUOT_PARANOIA symbol to standard config option

Make __DQUOT_PARANOIA define from the old days a standard config option
and turn it off by default.

This gets rid of a quota warning about writes before quota is turned on
for systems with ext4 root filesystem. Currently there's no way to legally
solve this because /etc/mtab has to be written before quota is turned on
on most systems.

Signed-off-by: Jan Kara <jack@suse.cz>

9 years agoMerge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
Linus Torvalds [Tue, 20 Apr 2010 16:21:19 +0000]
Merge branch 'urgent' of git://git./linux/kernel/git/brodo/pcmcia-2.6

* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
  pcmcia: fix error handling in cm4000_cs.c
  drivers/pcmcia: Add missing local_irq_restore
  serial_cs: MD55x support (PCMCIA GPRS/EDGE modem) (kernel 2.6.33)
  pcmcia: avoid late calls to pccard_validate_cis
  pcmcia: fix ioport size calculation in rsrc_nonstatic
  pcmcia: re-start on MFC override
  pcmcia: fix io_probe due to parent (PCI) resources
  pcmcia: use previously assigned IRQ for all card functions

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Tue, 20 Apr 2010 16:20:55 +0000]
Merge git://git./linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Fix hardirq tracing in trap return path.
  sparc64: Use correct pt_regs in decode_access_size() error paths.
  sparc64: Fix PREEMPT_ACTIVE value.
  sparc64: Run NMIs on the hardirq stack.
  sparc64: Allocate sufficient stack space in ftrace stubs.
  sparc: Fix forgotten kmemleak headers inclusion

9 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Tue, 20 Apr 2010 16:20:23 +0000]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf: Fix unsafe frame rewinding with hot regs fetching

9 years agoMerge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Tue, 20 Apr 2010 16:20:11 +0000]
Merge branch 'drm-linus' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm: delay vblank cleanup until after driver unload

9 years agox86: correctly wire up the newuname system call
Christoph Hellwig [Tue, 20 Apr 2010 03:31:02 +0000]
x86: correctly wire up the newuname system call

Before commit e28cbf22933d0c0ccaf3c4c27a1a263b41f73859 ("improve
sys_newuname() for compat architectures") 64-bit x86 had a private
implementation of sys_uname which was just called sys_uname, which other
architectures used for the old uname.

Due to some merge issues with the uname refactoring patches we ended up
calling the old uname version for both the old and new system call
slots, which lead to the domainname filed never be set which caused
failures with libnss_nis.

Reported-and-tested-by: Andy Isaacson <adi@hexapodia.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoKVM: Increase NR_IOBUS_DEVS limit to 200
Sridhar Samudrala [Tue, 30 Mar 2010 23:48:25 +0000]
KVM: Increase NR_IOBUS_DEVS limit to 200

This patch increases the current hardcoded limit of NR_IOBUS_DEVS
from 6 to 200. We are hitting this limit when creating a guest with more
than 1 virtio-net device using vhost-net backend. Each virtio-net
device requires 2 such devices to service notifications from rx/tx queues.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: fix the handling of dirty bitmaps to avoid overflows
Takuya Yoshikawa [Mon, 12 Apr 2010 10:35:35 +0000]
KVM: fix the handling of dirty bitmaps to avoid overflows

Int is not long enough to store the size of a dirty bitmap.

This patch fixes this problem with the introduction of a wrapper
function to calculate the sizes of dirty bitmaps.

Note: in mark_page_dirty(), we have to consider the fact that
  __set_bit() takes the offset as int, not long.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: MMU: fix kvm_mmu_zap_page() and its calling path
Xiao Guangrong [Fri, 16 Apr 2010 08:34:42 +0000]
KVM: MMU: fix kvm_mmu_zap_page() and its calling path

This patch fix:

- calculate zapped page number properly in mmu_zap_unsync_children()
- calculate freeed page number properly kvm_mmu_change_mmu_pages()
- if zapped children page it shoud restart hlist walking

KVM-Stable-Tag.
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: VMX: Save/restore rflags.vm correctly in real mode
Avi Kivity [Thu, 8 Apr 2010 15:19:35 +0000]
KVM: VMX: Save/restore rflags.vm correctly in real mode

Currently we set eflags.vm unconditionally when entering real mode emulation
through virtual-8086 mode, and clear it unconditionally when we enter protected
mode.  The means that the following sequence

  KVM_SET_REGS  (rflags.vm=1)
  KVM_SET_SREGS (cr0.pe=1)

Ends up with rflags.vm clear due to KVM_SET_SREGS triggering enter_pmode().

Fix by shadowing rflags.vm (and rflags.iopl) correctly while in real mode:
reads and writes to those bits access a shadow register instead of the actual
register.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: allow bit 10 to be cleared in MSR_IA32_MC4_CTL
Andre Przywara [Wed, 24 Mar 2010 16:46:42 +0000]
KVM: allow bit 10 to be cleared in MSR_IA32_MC4_CTL

There is a quirk for AMD K8 CPUs in many Linux kernels (see
arch/x86/kernel/cpu/mcheck/mce.c:__mcheck_cpu_apply_quirks()) that
clears bit 10 in that MCE related MSR. KVM can only cope with all
zeros or all ones, so it will inject a #GP into the guest, which
will let it panic.
So lets add a quirk to the quirk and ignore this single cleared bit.
This fixes -cpu kvm64 on all machines and -cpu host on K8 machines
with some guest Linux kernels.

Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: Don't spam kernel log when injecting exceptions due to bad cr writes
Avi Kivity [Thu, 11 Mar 2010 10:20:03 +0000]
KVM: Don't spam kernel log when injecting exceptions due to bad cr writes

These are guest-triggerable.

Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: SVM: Fix memory leaks that happen when svm_create_vcpu() fails
Takuya Yoshikawa [Tue, 9 Mar 2010 05:55:19 +0000]
KVM: SVM: Fix memory leaks that happen when svm_create_vcpu() fails

svm_create_vcpu() does not free the pages allocated during the creation
when it fails to complete the allocations. This patch fixes it.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: take srcu lock before call to complete_pio()
Gleb Natapov [Tue, 9 Mar 2010 10:01:10 +0000]
KVM: take srcu lock before call to complete_pio()

complete_pio() may use slot table which is protected by srcu.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agosparc64: Fix hardirq tracing in trap return path.
David S. Miller [Tue, 20 Apr 2010 07:48:37 +0000]
sparc64: Fix hardirq tracing in trap return path.

We can overflow the hardirq stack if we set the %pil here
so early, just let the normal control flow do it.

This is fine as we are allowed to do the actual IRQ enable
at any point after we call trace_hardirqs_on.

Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agodrm: delay vblank cleanup until after driver unload
Jesse Barnes [Fri, 26 Mar 2010 18:07:16 +0000]
drm: delay vblank cleanup until after driver unload

Drivers may use vblank calls now (e.g. drm_vblank_off) in their unload
paths, so don't clean up the vblank related structures until after
driver unload.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agomd/raid5: allow for more than 2^31 chunks.
NeilBrown [Tue, 20 Apr 2010 04:13:34 +0000]
md/raid5: allow for more than 2^31 chunks.

With many large drives and small chunk sizes it is possible
to create a RAID5 with more than 2^31 chunks.  Make sure this
works.

Reported-by: Brett King <king.br@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@kernel.org

9 years agoi2c-stu300: off by one issue
Dan Carpenter [Wed, 7 Apr 2010 09:22:58 +0000]
i2c-stu300: off by one issue

If we don't find the correct rate, we want to end the loop with "i"
pointing to the last element in the array.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

9 years agoi2c-pnx: Add stop conditions for end of transfer
Kevin Wells [Tue, 16 Mar 2010 22:55:37 +0000]
i2c-pnx: Add stop conditions for end of transfer

Add a stop condition bit flag to the last byte in the transfer.
This will generate an extra clock to handle the stop condition
and prevent devices from staying in an ACK'd state.

Signed-off-by: Kevin Wells <wellsk40@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

9 years agoi2c-pnx: Limit maximum divider to 1023
Kevin Wells [Tue, 16 Mar 2010 22:55:36 +0000]
i2c-pnx: Limit maximum divider to 1023

Limit maximum divider to 0x3ff to divider computations. On high I2C
parent clock rates, the divider can exceed 0x3ff. This will help
prevent some very odd clock rates.

Signed-off-by: Kevin Wells <wellsk40@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

9 years agoi2c-omap: fix OOPS in omap_i2c_unidle() during probe
Mika Westerberg [Tue, 23 Mar 2010 10:12:56 +0000]
i2c-omap: fix OOPS in omap_i2c_unidle() during probe

Commit d84d3ea317ce0db89ce0903b4037f800c5d4c477 added register shift to allow
also 16-bit register access. However, omap_i2c_unidle() is called before these
are set which causes the following OOPS:

    Unhandled fault: alignment exception (0x801) at 0xfa070009
    Internal error: : 801 [#1]
    last sysfs file:
    Modules linked in:
    CPU: 0    Not tainted  (2.6.34-rc2-00052-gae6be51 #3)
    PC is at omap_i2c_unidle+0x44/0x138
    LR is at trace_hardirqs_on_caller+0x158/0x18c
    pc : [<c01cd2c4>]    lr : [<c00743f8>]    psr: 20000013
    sp : cfc2bf10  ip : 00000009  fp : 00000000
    r10: 00000000  r9 : 00000000  r8 : c0378560
    r7 : c0378b88  r6 : c0378558  r5 : cfcadc00  r4 : cfcadc00
    r3 : 00000009  r2 : fa070000  r1 : 00000000  r0 : 00000000
    Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
    Control: 10c5387f  Table: 80004019  DAC: 00000017
    Process swapper (pid: 1, stack limit = 0xcfc2a2e8)
    Stack: (0xcfc2bf10 to 0xcfc2c000)
    bf00:                                     c0372cf8 c027225c 00000000 c0a69678
    bf20: cfc3e508 c0500898 c0378560 c0378560 c0500898 cfcac8c0 c04fc280 c017d4f4
    bf40: c0378560 c017c63c c0378560 c0378594 c0500898 cfcac8c0 c04fc280 c017c754
    bf60: 00000000 c017c6f4 c0500898 c017beac cfc16a5c cfc3fd94 c0023448 c0500898
    bf80: c0500898 c017b7d4 c032dc7f 00000093 cfc28d40 c0023448 00000000 c0500898
    bfa0: 00000000 00000000 00000000 c017ca48 c0023448 00000000 c001d274 00000000
    bfc0: 00000000 c002b344 00000031 00000000 00000000 00000192 00000000 c0023448
    bfe0: 00000000 00000000 00000000 c0008578 00000000 c002c304 ffdfffff ffffffff
    [<c01cd2c4>] (omap_i2c_unidle+0x44/0x138) from [<c027225c>] (omap_i2c_probe+0x1a4/0x398)
    [<c027225c>] (omap_i2c_probe+0x1a4/0x398) from [<c017d4f4>] (platform_drv_probe+0x18/0x1c)
    [<c017d4f4>] (platform_drv_probe+0x18/0x1c) from [<c017c63c>] (driver_probe_device+0xc0/0x178)
    [<c017c63c>] (driver_probe_device+0xc0/0x178) from [<c017c754>] (__driver_attach+0x60/0x84)
    [<c017c754>] (__driver_attach+0x60/0x84) from [<c017beac>] (bus_for_each_dev+0x44/0x74)
    [<c017beac>] (bus_for_each_dev+0x44/0x74) from [<c017b7d4>] (bus_add_driver+0x9c/0x218)
    [<c017b7d4>] (bus_add_driver+0x9c/0x218) from [<c017ca48>] (driver_register+0xa8/0x130)
    [<c017ca48>] (driver_register+0xa8/0x130) from [<c002b344>] (do_one_initcall+0x5c/0x1b8)
    [<c002b344>] (do_one_initcall+0x5c/0x1b8) from [<c0008578>] (kernel_init+0x90/0x144)
    [<c0008578>] (kernel_init+0x90/0x144) from [<c002c304>] (kernel_thread_exit+0x0/0x8)
    Code: e5942004 e3a0c009 e1a0331c e3a01000 (e18210b3)
    ---[ end trace 1b75b31a2719ed1c ]---

This patch moves register shift setting before any register accesses are done.

Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@nokia.com>
Cc: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

9 years agoi2c-imx: fix error handling
Arnaud Patard [Tue, 23 Mar 2010 16:28:28 +0000]
i2c-imx: fix error handling

- Return -ETIMEDOUT on bus busy error
- Fix timeout test "time_after(jiffies, orig_jiffies + HZ / 1000)" :
  By default, HZ=100 on arm. This means that this test has no chances to
  work and may result in a dead loop. Set timeout to 500ms.
- Don't try to send a new message if we failed to transmit
  previous one. This was preventing to recover from error on my system

Signed-off-by: Arnaud Patard <apatard@mandriva.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

9 years agoLinux 2.6.34-rc5
Linus Torvalds [Mon, 19 Apr 2010 23:29:56 +0000]
Linux 2.6.34-rc5

9 years agormap: add exclusively owned pages to the newest anon_vma
Rik van Riel [Wed, 14 Apr 2010 21:59:28 +0000]
rmap: add exclusively owned pages to the newest anon_vma

The recent anon_vma fixes cause many anonymous pages to end up
in the parent process anon_vma, even when the page is exclusively
owned by the current process.

Adding exclusively owned anonymous pages to the top anon_vma
reduces rmap scanning overhead, especially in workloads with
forking servers.

This patch adds a parameter to __page_set_anon_rmap that can
be used to indicate whether or not the added page is exclusively
owned by the current process.

Pages added through page_add_new_anon_rmap are exclusively
owned by the current process, and can be added to the top
anon_vma.

Pages added through page_add_anon_rmap can be either shared
or exclusively owned, so we do the conservative thing and
add it to the oldest anon_vma.

A next step would be to add the exclusive parameter to
page_add_anon_rmap, to be used from functions where we do
know for sure whether a page is exclusively owned.

Signed-off-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Lightly-tested-by: Borislav Petkov <bp@alien8.de>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
[ Edited to look nicer  - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>