* tag 'v3.5-rc4': (9818 commits)
Linux 3.5-rc4
Fix typo in printed messages
ARM: Orion: Fix Virtual/Physical mixup with watchdog
ARM: Kirkwood: clk_register_gate_fn: add fn assignment
ARM: Orion5x - Restore parts of io.h, with rework
drm: drop comment about this header being autogenerated.
ARM: OMAP4: hwmod data: Force HDMI in no-idle while enabled
ARM: OMAP2+: mux: fix sparse warning
ARM: OMAP2+: CM: increase the module disable timeout
ARM: OMAP4: clock data: add clockdomains for clocks used as main clocks
ARM: OMAP4: hwmod data: fix 32k sync timer idle modes
ARM: OMAP4+: hwmod: fix issue causing IPs not going back to Smart-Standby
xfs: rename log structure to xlog
xfs: shutdown xfs_sync_worker before the log
xfs: Fix overallocation in xfs_buf_allocate_memory()
xfs: fix allocbt cursor leak in xfs_alloc_ag_vextent_near
xfs: check for stale inode before acquiring iflock on push
Btrfs: delay iput with async extents
Btrfs: add a missing spin_lock
Btrfs: don't assume to be on the correct extent in add_all_parents
...
* /home/v4l/v4l/patchwork: (42 commits)
[media] s5h1420: Unused variable clock_setting
[media] stv090x: variable 'no_signal' set but not used
[media] stv0367: variable 'tps_rcvd' set but not used
[media] saa7164: Variable set but not used
[media] pvrusb2: Variables set but not used
[media] cx231xx: Paranoic stack memory save
[media] [trivial] v4l drivers: typo, change ctruct to struct in comment
[media] stradis: remove unused V4L1 headers
[media] em28xx: Improve support for the Terratec Cinergy HTC Stick HD
[media] em28xx: Add the DRX-K at I2C address 0x29 to the list of known I2C devices
[media] Add support for downloading the firmware of the Terratec Cinergy HTC Stick HD's firmware
[media] radio-sf16fmi: Use LM7000 driver
[media] radio-aimslab: Use LM7000 driver
[media] radio: Add Sanyo LM7000 tuner driver
[media] em28xx: Make a few drxk_config structs static
[media] em28xx: Remove unused AC97 register definitions
[media] em28xx: Rename AC97 registers to use sound/ac97_codec.h definitions
[media] em28xx: Fix wrong AC97 mic register usage
[media] zr364xx: add suspend/resume support
[media] zr364xx: allow multiple opens
...
Linus Torvalds [Sun, 24 Jun 2012 18:02:09 +0000 (11:02 -0700)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Avi Kivity:
"Fixing a scheduling-while-atomic bug in the ppc code, and a bug which
allowed pci bridges to be assigned to guests."
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: PPC: Book3S HV: Drop locks around call to kvmppc_pin_guest_page
KVM: Fix PCI header check on device assignment
Linus Torvalds [Sun, 24 Jun 2012 18:00:07 +0000 (11:00 -0700)]
Merge tag 'rdma-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull InfiniBand/RDMA fixes from Roland Dreier:
- Fixes to new ocrdma driver
- Typo in test in CMA
* tag 'rdma-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
RDMA/cma: QP type check on received REQs should be AND not OR
RDMA/ocrdma: Fix off by one in ocrdma_query_gid()
RDMA/ocrdma: Fixed RQ error CQE polling
RDMA/ocrdma: Correct queue SGE calculation
RDMA/ocrdma: Correct reported max queue sizes
RDMA/ocrdma: Fixed GID table for vlan and events
Linus Torvalds [Sun, 24 Jun 2012 17:57:59 +0000 (10:57 -0700)]
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Nothing very controversial in here. Most of the fixes are for OMAP
this time around, with some orion/kirkwood and a tegra patch mixed in."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: Orion: Fix Virtual/Physical mixup with watchdog
ARM: Kirkwood: clk_register_gate_fn: add fn assignment
ARM: Orion5x - Restore parts of io.h, with rework
ARM: OMAP4: hwmod data: Force HDMI in no-idle while enabled
ARM: OMAP2+: mux: fix sparse warning
ARM: OMAP2+: CM: increase the module disable timeout
ARM: OMAP4: clock data: add clockdomains for clocks used as main clocks
ARM: OMAP4: hwmod data: fix 32k sync timer idle modes
ARM: OMAP4+: hwmod: fix issue causing IPs not going back to Smart-Standby
ARM: OMAP: Fix Beagleboard DVI reset gpio
arm/dts: OMAP2: Fix interrupt controller binding
ARM: OMAP2: Fix tusb6010 GPIO interrupt for n8x0
ARM: OMAP2+: Fix MUSB ifdefs for platform init code
ARM: tegra: make tegra_cpu_reset_handler_enable() __init
ARM: OMAP: PM: Lock clocks list while generating summary
ARM: iconnect: Remove include of removed linux/spi/orion_spi.h
Linus Torvalds [Sun, 24 Jun 2012 17:57:15 +0000 (10:57 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Nothing major in here, one radeon SI fix for tiling, and one uninit
var fix, two minor header file fixes."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm: drop comment about this header being autogenerated.
drm/edid: don't return stack garbage from supports_rb
vga_switcheroo: Add include guard
drm/radeon: SI tiling fixes for display
Andrew Lunn [Fri, 22 Jun 2012 06:54:02 +0000 (08:54 +0200)]
ARM: Orion: Fix Virtual/Physical mixup with watchdog
The orion watchdog is expecting to be passed the physcial address of
the hardware, and will ioremap() it to give a virtual address it will
use as the base address for the hardware. However, when creating the
platform resource record, a virtual address was being used.
Add the necassary #define's so we can pass the physical address as
expected.
Tested on Kirkwood and Orion5x.
Cc: stable <stable@vger.kernel.org> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Olof Johansson <olof@lixom.net>
In commit: 98d9986 ARM: Kirkwood: Replace clock gating
the kirkwood clock gating has been reworked. A custom variant of
clock gating, that calls a custom function before gating the clock
off, has been introduced. However in clk_register_gate_fn() this
custom function "fn" is never assigned.
This patch adds the missing fn assignment.
Cc: stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@blackshift.org> Tested-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Olof Johansson <olof@lixom.net>
Andrew Lunn [Fri, 22 Jun 2012 18:57:57 +0000 (20:57 +0200)]
ARM: Orion5x - Restore parts of io.h, with rework
Commit 4d5fc58dbe34b78157c05b319669bb3e064ba8bd (ARM: remove bunch of
now unused mach/io.h files) removed the orion5x io.h. Unfortunately,
this is still needed for the definition of IO_SPACE_LIMIT which
overrides the default 64K. All Orion based systems have 1Mbyte of IO
space per PCI[e] bus, and try to request_resource() this size. Orion5x
has two such PCI buses.
It is likely that the original, removed version, was broken. This
version might be less broken. However, it has not been tested on
hardware with a PCI card, let alone hardware with a PCI card with IO
capabilities.
Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Sat, 23 Jun 2012 23:16:29 +0000 (16:16 -0700)]
Merge tag 'omap-fixes-a-for-3.5rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into fixes
From Paul Walmsley (as per Tony Lindgren's request):
"Some uncontroversial OMAP clock, hwmod, and compiler warning fixes for 3.5-rc"
* tag 'omap-fixes-a-for-3.5rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending:
ARM: OMAP4: hwmod data: Force HDMI in no-idle while enabled
ARM: OMAP2+: mux: fix sparse warning
ARM: OMAP2+: CM: increase the module disable timeout
ARM: OMAP4: clock data: add clockdomains for clocks used as main clocks
ARM: OMAP4: hwmod data: fix 32k sync timer idle modes
ARM: OMAP4+: hwmod: fix issue causing IPs not going back to Smart-Standby
ARM: OMAP: PM: Lock clocks list while generating summary
Olof Johansson [Sat, 23 Jun 2012 23:11:50 +0000 (16:11 -0700)]
Merge tag 'omap-fixes-for-v3.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
From Tony Lindgren:
"Here are a few fixes with the biggest one being fix for Beagle DVI
reset. All of them are regression fixes, except for the missing omap2
interrupt controller binding that somehow got missed earlier."
* tag 'omap-fixes-for-v3.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP: Fix Beagleboard DVI reset gpio
arm/dts: OMAP2: Fix interrupt controller binding
ARM: OMAP2: Fix tusb6010 GPIO interrupt for n8x0
ARM: OMAP2+: Fix MUSB ifdefs for platform init code
Linus Torvalds [Sat, 23 Jun 2012 00:47:08 +0000 (17:47 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull Ceph fixes from Sage Weil:
"There are a couple of fixes from Yan for bad pointer dereferences in
the messenger code and when fiddling with page->private after page
migration, a fix from Alex for a use-after-free in the osd client
code, and a couple fixes for the message refcounting and shutdown
ordering."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
libceph: flush msgr queue during mon_client shutdown
rbd: Clear ceph_msg->bio_iter for retransmitted message
libceph: use con get/put ops from osd_client
libceph: osd_client: don't drop reply reference too early
ceph: check PG_Private flag before accessing page->private
Linus Torvalds [Fri, 22 Jun 2012 18:07:55 +0000 (11:07 -0700)]
Merge tag 'for-linus-Jun-21-2012' of git://oss.sgi.com/xfs/xfs
Pull XFS fixes from Ben Myers:
- Fix stale data exposure with unwritten extents
- Fix a warning in xfs_alloc_vextent with ODEBUG
- Fix overallocation and alignment of pages for xfs_bufs
- Fix a cursor leak
- Fix a log hang
- Fix a crash related to xfs_sync_worker
- Rename xfs log structure from struct log to struct xlog so we can use
crash dumps effectively
* tag 'for-linus-Jun-21-2012' of git://oss.sgi.com/xfs/xfs:
xfs: rename log structure to xlog
xfs: shutdown xfs_sync_worker before the log
xfs: Fix overallocation in xfs_buf_allocate_memory()
xfs: fix allocbt cursor leak in xfs_alloc_ag_vextent_near
xfs: check for stale inode before acquiring iflock on push
xfs: fix debug_object WARN at xfs_alloc_vextent()
xfs: xfs_vm_writepage clear iomap_valid when !buffer_uptodate (REV2)
Linus Torvalds [Fri, 22 Jun 2012 17:58:57 +0000 (10:58 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar.
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
ftrace: Make all inline tags also include notrace
perf: Use css_tryget() to avoid propping up css refcount
perf tools: Fix synthesizing tracepoint names from the perf.data headers
perf stat: Fix default output file
perf tools: Fix endianity swapping for adds_features bitmask
Ricardo Neri [Thu, 21 Jun 2012 08:08:53 +0000 (10:08 +0200)]
ARM: OMAP4: hwmod data: Force HDMI in no-idle while enabled
As per the OMAP4 documentation, audio over HDMI must be transmitted in
no-idle mode. This patch adds the HWMOD_SWSUP_SIDLE so that omap_hwmod uses
no-idle/force-idle settings instead of smart-idle mode.
This is required as the DSS interface clock is used as functional clock
for the HDMI wrapper audio FIFO. If no-idle mode is not used, audio could
be choppy, have bad quality or not be audible at all.
Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
[b-cousson@ti.com: Update the subject and align the .flags
location with the script template] Signed-off-by: Benoit Cousson <b-cousson@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
Paul Walmsley [Sun, 17 Jun 2012 17:57:53 +0000 (11:57 -0600)]
ARM: OMAP2+: CM: increase the module disable timeout
Increase the timeout for disabling an IP block to five milliseconds.
This is to handle the usb_host_fs idle latency, which takes almost
four milliseconds after a host controller reset.
This is the second of two patches needed to resolve the following
boot warning:
Paul Walmsley [Sun, 17 Jun 2012 17:57:52 +0000 (11:57 -0600)]
ARM: OMAP4: clock data: add clockdomains for clocks used as main clocks
Until the OMAP4 code is converted to disable the use of the clock
framework-based clockdomain enable/disable sequence, any clock used as
a hwmod main_clk must have a clockdomain associated with it. This
patch populates some clock structure clockdomain names to resolve the
following warnings during kernel init:
omap_hwmod: dpll_mpu_m2_ck: missing clockdomain for dpll_mpu_m2_ck.
omap_hwmod: trace_clk_div_ck: missing clockdomain for trace_clk_div_ck.
omap_hwmod: l3_div_ck: missing clockdomain for l3_div_ck.
omap_hwmod: ddrphy_ck: missing clockdomain for ddrphy_ck.
The 32k sync timer IP block target idle modes in the hwmod data are
incorrect. The IP block does not support any smart-idle modes.
Update the data to reflect the correct modes.
This problem was initially identified and a diff fragment posted to
the lists by Benoît Cousson <b-cousson@ti.com>. A patch description
bug in the first version was also identified by Benoît.
Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoît Cousson <b-cousson@ti.com> Cc: Tero Kristo <t-kristo@ti.com>
Djamil Elaidi [Sun, 17 Jun 2012 17:57:51 +0000 (11:57 -0600)]
ARM: OMAP4+: hwmod: fix issue causing IPs not going back to Smart-Standby
If an IP is configured in Smart-Standby-Wakeup, when disabling wakeup feature the
IP will not go back to Smart-Standby, but will remain in Smart-Standby-Wakeup.
Signed-off-by: Djamil Elaidi <d-elaidi@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
Linus Torvalds [Thu, 21 Jun 2012 23:05:43 +0000 (16:05 -0700)]
Merge tag 'nfs-for-3.5-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
- Fix a write hang due to an uninitalised variable when
!defined(CONFIG_NFS_V4)
- Address upcall races in the legacy NFSv4 idmapper
- Remove an O_DIRECT refcounting issue
- Fix a pNFS refcounting bug when the file layout metadata server is
also acting as a data server
- Fix a pNFS module loading race.
* tag 'nfs-for-3.5-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS: Force the legacy idmapper to be single threaded
NFS: Initialise commit_info.rpc_out when !defined(CONFIG_NFS_V4)
NFS: Fix a refcounting issue in O_DIRECT
NFSv4.1: Fix a race in set_pnfs_layoutdriver
NFSv4.1: Fix umount when filelayout DS is also the MDS
Linus Torvalds [Thu, 21 Jun 2012 20:41:07 +0000 (13:41 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"This is a small pull with btrfs fixes. The biggest of the bunch is
another fix for the new backref walking code.
We're still hammering out one btrfs dio vs buffered reads problem, but
that one will have to wait for the next rc."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: delay iput with async extents
Btrfs: add a missing spin_lock
Btrfs: don't assume to be on the correct extent in add_all_parents
Btrfs: introduce btrfs_next_old_item
Linus Torvalds [Thu, 21 Jun 2012 20:40:40 +0000 (13:40 -0700)]
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
"Two minor fixes in emc2103 and applesmc drivers."
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (emc2103) Fix use of an uninitilized variable in error case
hwmon: (applesmc) Limit key length in warning messages
Ben Myers [Fri, 25 May 2012 20:45:36 +0000 (15:45 -0500)]
xfs: shutdown xfs_sync_worker before the log
Revert commit 1307bbd, which uses the s_umount semaphore to provide
exclusion between xfs_sync_worker and unmount, in favor of shutting down
the sync worker before freeing the log in xfs_log_unmount. This is a
cleaner way of resolving the race between xfs_sync_worker and unmount
than using s_umount.
Signed-off-by: Ben Myers <bpm@sgi.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
Jan Kara [Tue, 5 Jun 2012 22:32:26 +0000 (00:32 +0200)]
xfs: Fix overallocation in xfs_buf_allocate_memory()
Commit de1cbee which removed b_file_offset in favor of b_bn introduced a bug
causing xfs_buf_allocate_memory() to overestimate the number of necessary
pages. The problem is that xfs_buf_alloc() sets b_bn to -1 and thus effectively
every buffer is straddling a page boundary which causes
xfs_buf_allocate_memory() to allocate two pages and use vmalloc() for access
which is unnecessary.
Dave says xfs_buf_alloc() doesn't need to set b_bn to -1 anymore since the
buffer is inserted into the cache only after being fully initialized now.
So just make xfs_buf_alloc() fill in proper block number from the beginning.
CC: David Chinner <dchinner@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Dave Chinner [Tue, 12 Jun 2012 04:20:26 +0000 (14:20 +1000)]
xfs: fix allocbt cursor leak in xfs_alloc_ag_vextent_near
When we fail to find an matching extent near the requested extent
specification during a left-right distance search in
xfs_alloc_ag_vextent_near, we fail to free the original cursor that
we used to look up the XFS_BTNUM_CNT tree and hence leak it.
Reported-by: Chris J Arges <chris.j.arges@canonical.com> Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ben Myers <bpm@sgi.com>
Brian Foster [Mon, 11 Jun 2012 14:39:43 +0000 (10:39 -0400)]
xfs: check for stale inode before acquiring iflock on push
An inode in the AIL can be flush locked and marked stale if
a cluster free transaction occurs at the right time. The
inode item is then marked as flushing, which causes xfsaild
to spin and leaves the filesystem stalled. This is
reproduced by running xfstests 273 in a loop for an
extended period of time.
Check for stale inodes before the flush lock. This marks
the inode as pinned, leads to a log flush and allows the
filesystem to proceed.
Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Paul Bolle [Wed, 13 Jun 2012 07:47:19 +0000 (04:47 -0300)]
[media] stradis: remove unused V4L1 headers
Commit 39c3d488452ae206cfc8afda0db041ee55d01c3c ("[media] cpia, stradis:
remove deprecated V4L1 drivers") removed the last file including these
five headers. Apparently it was just an oversight to keep them in the
tree. They can safely be removed now.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
[media] em28xx: Improve support for the Terratec Cinergy HTC Stick HD
The windows driver used different values for the GPIOs and analog
decoder configuration. The values from the windows driver are now
used.
It also seems that the windows driver has LNA always disabled.
Thus we are doing the same (using the same flags as on windows).
I (only) tested with DVB-T and it worked quite well.
[mchehab@redhat.com: Fix merge conflicts and tested with DVB-C] Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-/* freq is in 1/16 kHz to internal number, hw precision is 50 kHz */
-/* It is only useful to give freq in interval of 800 (=0.05Mhz),
- * other bits will be truncated, e.g 92.7400016 -> 92.7, but
- * 92.7400017 -> 92.75
- */
-#define RSF16_ENCODE(x) ((x) / 800 + 214)
#define RSF16_MINFREQ (87 * 16000)
#define RSF16_MAXFREQ (108 * 16000)
Randy Dunlap [Thu, 21 Jun 2012 00:30:30 +0000 (21:30 -0300)]
[media] media: pms.c needs linux/slab.h
drivers/media/video/pms.c uses kzalloc() and kfree() so it should
include <linux/slab.h> to fix build errors and a warning.
drivers/media/video/pms.c:1047:2: error: implicit declaration of function 'kzalloc'
drivers/media/video/pms.c:1047:6: warning: assignment makes pointer from integer without a cast
drivers/media/video/pms.c:1116:2: error: implicit declaration of function 'kfree'
Found in mmotm but applies to mainline.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Josef Bacik [Fri, 15 Jun 2012 18:19:48 +0000 (12:19 -0600)]
Btrfs: delay iput with async extents
There is some concern that these iput()'s could be the final iputs and could
induce lockups on people waiting on writeback. This would happen in the
rare case that we don't create ordered extents because of an error, but it
is theoretically possible and we already have a mechanism to deal with this
so just make them delayed iputs to negate any worry.
Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Josef Bacik [Mon, 18 Jun 2012 13:23:18 +0000 (07:23 -0600)]
Btrfs: add a missing spin_lock
When fixing up the locking in the delayed ref destruction work I accidently
broke the locking myself ;(. Add back a spin_lock that should be there and
we are now all set. Thanks,
Btrfs: add a missing spin_lock
When fixing up the locking in the delayed ref destruction work I accidently
broke the locking myself ;(. Add back a spin_lock that should be there and
we are now all set. Thanks,
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Alexander Block [Tue, 19 Jun 2012 13:42:26 +0000 (07:42 -0600)]
Btrfs: don't assume to be on the correct extent in add_all_parents
add_all_parents did assume that path is already at a correct extent data
item, which may not be true in case of data extents that were partly
rewritten and splitted.
We need to check if we're on a matching extent for every item and only
for the ones after the first. The loop is changed to do this now.
This patch also fixes a bug introduced with commit 3b127fd8 "Btrfs:
remove obsolete btrfs_next_leaf call from __resolve_indirect_ref".
The removal of next_leaf did sometimes result in slot==nritems when
the above described case happens, and thus resulting in invalid values
(e.g. wanted_obejctid) in add_all_parents (leading to missed backrefs
or even crashes).
Signed-off-by: Alexander Block <ablock84@googlemail.com> Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Daniel Vetter [Tue, 19 Jun 2012 09:33:06 +0000 (11:33 +0200)]
drm/edid: don't return stack garbage from supports_rb
We need to initialize this to false, because the is_rb callback only
ever sets it to true.
Noticed while reading through the code.
Cc: stable@vger.kernel.org Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Linus Torvalds [Thu, 21 Jun 2012 05:12:52 +0000 (22:12 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine fixes from Vinod Koul:
"A few fixes in pl330 and imx-sdma drivers."
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
DMA: PL330: Fix racy mutex unlock
DMA: PL330: Add missing static storage class specifier
dma: imx-sdma: buf_tail should be initialize in prepare function
dmaengine: pl330: dont complete descriptor for cyclic dma
Linus Torvalds [Thu, 21 Jun 2012 05:11:04 +0000 (22:11 -0700)]
Merge branch 'for-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull two cgroup fixes from Tejun Heo:
"This containes two patches fixing a refcnt race bug during css_put().
Decrementing and checking the value weren't atomic and two tasks could
think that they both pushed the counter to zero."
* 'for-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroups: Account for CSS_DEACT_BIAS in __css_put
cgroup: make sure that decisions in __css_put are atomic
David Rientjes [Thu, 21 Jun 2012 01:00:12 +0000 (18:00 -0700)]
mm, mempolicy: fix mbind() to do synchronous migration
If the range passed to mbind() is not allocated on nodes set in the
nodemask, it migrates the pages to respect the constraint.
The final formal of migrate_pages() is a mode of type enum migrate_mode,
not a boolean. do_mbind() is currently passing "true" which is the
equivalent of MIGRATE_SYNC_LIGHT. This should instead be MIGRATE_SYNC
for synchronous page migration.
Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Thu, 21 Jun 2012 01:30:30 +0000 (18:30 -0700)]
media: pms.c needs linux/slab.h
drivers/media/video/pms.c uses kzalloc() and kfree() so it should
include <linux/slab.h> to fix build errors and a warning.
drivers/media/video/pms.c:1047:2: error: implicit declaration of function 'kzalloc'
drivers/media/video/pms.c:1047:6: warning: assignment makes pointer from integer without a cast
drivers/media/video/pms.c:1116:2: error: implicit declaration of function 'kfree'
Found in mmotm but applies to mainline.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Wed, 20 Jun 2012 22:15:03 +0000 (15:15 -0700)]
Merge tag 'staging-3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging tree fixes from Greg Kroah-Hartman:
"Here are a number of small fixes for the drivers/staging tree, as well
as iio and pstore drivers (which came from the staging tree in the
3.5-rc1 merge). All of these are tiny, but resolve issues that people
have been reporting.
There's also a documentation update to reflect what the iio drivers
really are doing, which is good to get straightened out.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'staging-3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: r8712u: Add new USB IDs
staging: gdm72xx: Release netlink socket properly
iio: drop wrong reference from Kconfig
pstore/inode: Make pstore_fill_super() static
pstore/ram: Should zap persistent zone on unlink
pstore/ram_core: Factor persistent_ram_zap() out of post_init()
pstore/ram_core: Do not reset restored zone's position and size
pstore/ram: Should update old dmesg buffer before reading
staging:iio:ad7298: Fix linker error due to missing IIO kfifo buffer
Revert "staging: usbip: bugfix for stack corruption on 64-bit architectures"
staging: usbip: bugfix for stack corruption on 64-bit architectures
staging/comedi: fix build for USB not enabled
staging: omapdrm: fix crash when freeing bad fb
staging:iio:ad7606: Re-add missing scale attribute
iio: Fix potential use after free
staging:iio: remove num_interrupt_lines from documentation
iio: documentation: Add out_altvoltage and friends
Linus Torvalds [Wed, 20 Jun 2012 22:14:28 +0000 (15:14 -0700)]
Merge tag 'driver-core-3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and printk fixes from Greg Kroah-Hartman:
"Here are some fixes for 3.5-rc4 that resolve the kmsg problems that
people have reported showing up after the printk and kmsg changes went
into 3.5-rc1. There are also a smattering of other tiny fixes for the
extcon and hyper-v drivers that people have reported.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'driver-core-3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
extcon: max8997: Add missing kfree for info->edev in max8997_muic_remove()
extcon: Set platform drvdata in gpio_extcon_probe() and fix irq leak
extcon: Fix wrong index in max8997_extcon_cable[]
kmsg - kmsg_dump() fix CONFIG_PRINTK=n compilation
printk: return -EINVAL if the message len is bigger than the buf size
printk: use mutex lock to stop syslog_seq from going wild
kmsg - kmsg_dump() use iterator to receive log buffer content
vme: change maintainer e-mail address
Extcon: Don't try to create duplicate link names
driver core: fixup reversed deferred probe order
printk: Fix alignment of buf causing crash on ARM EABI
Tools: hv: verify origin of netlink connector message
Linus Torvalds [Wed, 20 Jun 2012 22:13:56 +0000 (15:13 -0700)]
Merge tag 'char-misc-3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull misc tree updates from Greg Kroah-Hartman:
"Here are some drivers/misc bugfixes (really just drivers/misc/mei/
fixes) for a few problems that have been reported.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'char-misc-3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
misc: mei: set WDIOF_ALARMONLY on mei watchdog
misc: mei: Disable MSI when IRQ registration fails
misc: mei: fix stalled read
misc: mei: unregister misc device in pci_remove function
misc: mei: set IRQF_ONESHOT for msi request_threaded_irq
Linus Torvalds [Wed, 20 Jun 2012 22:13:13 +0000 (15:13 -0700)]
Merge tag 'tty-3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull serial driver fixes from Greg Kroah-Hartman:
"Here are 3 patches resolving a boot regression (the mop500 fix), a
build warning fix, and a kernel-doc fix. All tiny, but should go into
the final 3.5 release.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'tty-3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial/amba-pl011: move custom pin control to driver
serial: fix serial_txx9.c build warning/typo
serial: fix kernel-doc warnings in 8250.c
Linus Torvalds [Wed, 20 Jun 2012 21:41:57 +0000 (14:41 -0700)]
Merge branch 'akpm' (Andrew's patch-bomb)
* emailed from Andrew Morton <akpm@linux-foundation.org>: (21 patches)
mm/memblock: fix overlapping allocation when doubling reserved array
c/r: prctl: Move PR_GET_TID_ADDRESS to a proper place
pidns: find_new_reaper() can no longer switch to init_pid_ns.child_reaper
pidns: guarantee that the pidns init will be the last pidns process reaped
fault-inject: avoid call to random32() if fault injection is disabled
Viresh has moved
get_maintainer: Fix --help warning
mm/memory.c: fix kernel-doc warnings
mm: fix kernel-doc warnings
mm: correctly synchronize rss-counters at exit/exec
mm, thp: print useful information when mmap_sem is unlocked in zap_pmd_range
h8300: use the declarations provided by <asm/sections.h>
h8300: fix use of extinct _sbss and _ebss
xtensa: use the declarations provided by <asm/sections.h>
xtensa: use "test -e" instead of bashism "test -a"
xtensa: replace xtensa-specific _f{data,text} by _s{data,text}
memcg: fix use_hierarchy css_is_ancestor oops regression
mm, oom: fix and cleanup oom score calculations
nilfs2: ensure proper cache clearing for gc-inodes
thp: avoid atomic64_read in pmd_read_atomic for 32bit PAE
...
Greg Pearson [Wed, 20 Jun 2012 19:53:05 +0000 (12:53 -0700)]
mm/memblock: fix overlapping allocation when doubling reserved array
__alloc_memory_core_early() asks memblock for a range of memory then try
to reserve it. If the reserved region array lacks space for the new
range, memblock_double_array() is called to allocate more space for the
array. If memblock is used to allocate memory for the new array it can
end up using a range that overlaps with the range originally allocated in
__alloc_memory_core_early(), leading to possible data corruption.
With this patch memblock_double_array() now calls memblock_find_in_range()
with a narrowed candidate range (in cases where the reserved.regions array
is being doubled) so any memory allocated will not overlap with the
original range that was being reserved. The range is narrowed by passing
in the starting address and size of the previously allocated range. Then
the range above the ending address is searched and if a candidate is not
found, the range below the starting address is searched.
Signed-off-by: Greg Pearson <greg.pearson@hp.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Tejun Heo <tj@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oleg Nesterov [Wed, 20 Jun 2012 19:53:04 +0000 (12:53 -0700)]
pidns: find_new_reaper() can no longer switch to init_pid_ns.child_reaper
find_new_reaper() changes pid_ns->child_reaper, see add0d4df ("pid_ns:
zap_pid_ns_processes: fix the ->child_reaper changing").
The original reason has gone away after the previous patch, ->children
list must be empty after zap_pid_ns_processes().
However now we can not switch to init_pid_ns.child_reaper.
__unhash_process() relies on the "->child_reaper == parent" check, but
this check does not work if the last exiting task is also the child
reaper.
As Eric sugested, we can change __unhash_process() to use the parent's
pid_ns and remove this code.
Also, with this change we can move detach_pid(PIDTYPE_PID) back, where it
was before the previous fix.
Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Louis Rilling <louis.rilling@kerlabs.com> Cc: Mike Galbraith <efault@gmx.de> Acked-by: Pavel Emelyanov <xemul@parallels.com> Tested-by: Andrew Wagin <avagin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
pidns: guarantee that the pidns init will be the last pidns process reaped
Today we have a twofold bug. Sometimes release_task on pid == 1 in a pid
namespace can run before other processes in a pid namespace have had
release task called. With the result that pid_ns_release_proc can be
called before the last proc_flus_task() is done using upid->ns->proc_mnt,
resulting in the use of a stale pointer. This same set of circumstances
can lead to waitpid(...) returning for a processes started with
clone(CLONE_NEWPID) before the every process in the pid namespace has
actually exited.
To fix this modify zap_pid_ns_processess wait until all other processes in
the pid namespace have exited, even EXIT_DEAD zombies.
The delay_group_leader and related tests ensure that the thread gruop
leader will be the last thread of a process group to be reaped, or to
become EXIT_DEAD and self reap. With the change to zap_pid_ns_processes
we get the guarantee that pid == 1 in a pid namespace will be the last
task that release_task is called on.
With pid == 1 being the last task to pass through release_task
pid_ns_release_proc can no longer be called too early nor can wait return
before all of the EXIT_DEAD tasks in a pid namespace have exited.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Louis Rilling <louis.rilling@kerlabs.com> Cc: Mike Galbraith <efault@gmx.de> Acked-by: Pavel Emelyanov <xemul@parallels.com> Tested-by: Andrew Wagin <avagin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 20 Jun 2012 19:53:02 +0000 (12:53 -0700)]
get_maintainer: Fix --help warning
Using --help emits a concatenation error. Fix it.
Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Paul Bolle <pebolle@tiscali.nl> Tested-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Wed, 20 Jun 2012 19:53:02 +0000 (12:53 -0700)]
mm/memory.c: fix kernel-doc warnings
Fix kernel-doc warnings in mm/memory.c:
Warning(mm/memory.c:1377): No description found for parameter 'start'
Warning(mm/memory.c:1377): Excess function parameter 'address' description in 'zap_page_range'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Wanpeng Li [Wed, 20 Jun 2012 19:53:01 +0000 (12:53 -0700)]
mm: fix kernel-doc warnings
Fix kernel-doc warnings such as
Warning(../mm/page_cgroup.c:432): No description found for parameter 'id'
Warning(../mm/page_cgroup.c:432): Excess function parameter 'mem' description in 'swap_cgroup_record'
Signed-off-by: Wanpeng Li <liwp@linux.vnet.ibm.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm: correctly synchronize rss-counters at exit/exec
do_exit() and exec_mmap() call sync_mm_rss() before mm_release() does
put_user(clear_child_tid) which can update task->rss_stat and thus make
mm->rss_stat inconsistent. This triggers the "BUG:" printk in check_mm().
Let's fix this bug in the safest way, and optimize/cleanup this later.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hughd@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Rientjes [Wed, 20 Jun 2012 19:53:00 +0000 (12:53 -0700)]
mm, thp: print useful information when mmap_sem is unlocked in zap_pmd_range
Andrea asked for addr, end, vma->vm_start, and vma->vm_end to be emitted
when !rwsem_is_locked(&tlb->mm->mmap_sem). Otherwise, debugging the
underlying issue is more difficult.
Suggested-by: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
h8300: use the declarations provided by <asm/sections.h>
Cleanups:
- Include <asm/sections.h>,
- Remove the (different) extern declarations,
- Remove the no longer needed address-of ('&') operators,
- Remove the superfluous casts, use proper printk formatting instead.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
xtensa: use the declarations provided by <asm/sections.h>
Cleanups:
- Include <asm/sections.h>,
- Remove the (different) extern declarations,
- Remove the no longer needed address-of ('&') operators,
- Use %p to format pointer differences.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
xtensa: replace xtensa-specific _f{data,text} by _s{data,text}
commit a2d063ac216c161 ("extable, core_kernel_data(): Make sure all archs
define _sdata") missed xtensa. Xtensa does have a start of data marker,
but calls it _fdata, causing
kernel/built-in.o:(.text+0x964): undefined reference to `_sdata'
_stext was already defined, but it was duplicated by _fdata.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If use_hierarchy is set, reclaim testing soon oopses in css_is_ancestor()
called from __mem_cgroup_same_or_subtree() called from page_referenced():
when processes are exiting, it's easy for mm_match_cgroup() to pass along
a NULL memcg coming from a NULL mm->owner.
Check for that in __mem_cgroup_same_or_subtree(). Return true or false?
False because we cannot know if it was in the hierarchy, but also false
because it's better not to count a reference from an exiting process.
Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Rientjes [Wed, 20 Jun 2012 19:52:58 +0000 (12:52 -0700)]
mm, oom: fix and cleanup oom score calculations
The divide in p->signal->oom_score_adj * totalpages / 1000 within
oom_badness() was causing an overflow of the signed long data type.
This adds both the root bias and p->signal->oom_score_adj before doing the
normalization which fixes the issue and also cleans up the calculation.
Tested-by: Dave Jones <davej@redhat.com> Signed-off-by: David Rientjes <rientjes@google.com> Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ryusuke Konishi [Wed, 20 Jun 2012 19:52:57 +0000 (12:52 -0700)]
nilfs2: ensure proper cache clearing for gc-inodes
A gc-inode is a pseudo inode used to buffer the blocks to be moved by
garbage collection.
Block caches of gc-inodes must be cleared every time a garbage collection
function (nilfs_clean_segments) completes. Otherwise, stale blocks
buffered in the caches may be wrongly reused in successive calls of the GC
function.
For user files, this is not a problem because their gc-inodes are
distinguished by a checkpoint number as well as an inode number. They
never buffer different blocks if either an inode number, a checkpoint
number, or a block offset differs.
However, gc-inodes of sufile, cpfile and DAT file can store different data
for the same block offset. Thus, the nilfs_clean_segments function can
move incorrect block for these meta-data files if an old block is cached.
I found this is really causing meta-data corruption in nilfs.
This fixes the issue by ensuring cache clear of gc-inodes and resolves
reported GC problems including checkpoint file corruption, b-tree
corruption, and the following warning during GC.
nilfs_palloc_freev: entry number 307234 already freed.
...
Andrea Arcangeli [Wed, 20 Jun 2012 19:52:57 +0000 (12:52 -0700)]
thp: avoid atomic64_read in pmd_read_atomic for 32bit PAE
In the x86 32bit PAE CONFIG_TRANSPARENT_HUGEPAGE=y case while holding the
mmap_sem for reading, cmpxchg8b cannot be used to read pmd contents under
Xen.
So instead of dealing only with "consistent" pmdvals in
pmd_none_or_trans_huge_or_clear_bad() (which would be conceptually
simpler) we let pmd_none_or_trans_huge_or_clear_bad() deal with pmdvals
where the low 32bit and high 32bit could be inconsistent (to avoid having
to use cmpxchg8b).
The only guarantee we get from pmd_read_atomic is that if the low part of
the pmd was found null, the high part will be null too (so the pmd will be
considered unstable). And if the low part of the pmd is found "stable"
later, then it means the whole pmd was read atomically (because after a
pmd is stable, neither MADV_DONTNEED nor page faults can alter it anymore,
and we read the high part after the low part).
In the 32bit PAE x86 case, it is enough to read the low part of the pmdval
atomically to declare the pmd as "stable" and that's true for THP and no
THP, furthermore in the THP case we also have a barrier() that will
prevent any inconsistent pmdvals to be cached by a later re-read of the
*pmd.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Jonathan Nieder <jrnieder@gmail.com> Cc: Ulrich Obergfell <uobergfe@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Hugh Dickins <hughd@google.com> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Petr Matousek <pmatouse@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Jan Beulich <jbeulich@suse.com> Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com> Tested-by: Andrew Jones <drjones@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pravin B Shelar [Wed, 20 Jun 2012 19:52:56 +0000 (12:52 -0700)]
mm: fix slab->page _count corruption when using slub
On arches that do not support this_cpu_cmpxchg_double() slab_lock is used
to do atomic cmpxchg() on double word which contains page->_count. The
page count can be changed from get_page() or put_page() without taking
slab_lock. That corrupts page counter.
Fix it by moving page->_count out of cmpxchg_double data. So that slub
does no change it while updating slub meta-data in struct page.
[akpm@linux-foundation.org: use standard comment layout, tweak comment text] Reported-by: Amey Bhide <abhide@nicira.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alain Renaud [Fri, 8 Jun 2012 19:34:46 +0000 (15:34 -0400)]
xfs: xfs_vm_writepage clear iomap_valid when !buffer_uptodate (REV2)
On filesytems with a block size smaller than PAGE_SIZE we currently have
a problem with unwritten extents. If a we have multi-block page for
which an unwritten extent has been allocated, and only some of the
buffers have been written to, and they are not contiguous, we can expose
stale data from disk in the blocks between the writes after extent
conversion.
Example of a page with unwritten and real data.
buffer content
0 empty b_state = 0
1 DATA b_state = 0x1023 Uptodate,Dirty,Mapped,Unwritten
2 DATA b_state = 0x1023 Uptodate,Dirty,Mapped,Unwritten
3 empty b_state = 0
4 empty b_state = 0
5 DATA b_state = 0x1023 Uptodate,Dirty,Mapped,Unwritten
6 DATA b_state = 0x1023 Uptodate,Dirty,Mapped,Unwritten
7 empty b_state = 0
Buffers 1, 2, 5, and 6 have been written to, leaving 0, 3, 4, and 7
empty. Currently buffers 1, 2, 5, and 6 are added to a single ioend,
and when IO has completed, extent conversion creates a real extent from
block 1 through block 6, leaving 0 and 7 unwritten. However buffers 3
and 4 were not written to disk, so stale data is exposed from those
blocks on a subsequent read.
Fix this by setting iomap_valid = 0 when we find a buffer that is not
Uptodate. This ensures that buffers 5 and 6 are not added to the same
ioend as buffers 1 and 2. Later these blocks will be converted into two
separate real extents, leaving the blocks in between unwritten.
Signed-off-by: Alain Renaud <arenaud@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Alex Deucher [Thu, 14 Jun 2012 19:58:25 +0000 (15:58 -0400)]
drm/radeon: SI tiling fixes for display
- Use the correct union for getting the tiling info
- Properly init the PIPE_CONFIG field for SI
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
projects / karo-tx-linux.git / log