Yinghai Lu [Sun, 18 Dec 2011 02:33:37 +0000 (18:33 -0800)]
pci: Fix hotplug of Express Module with pci bridges
I noticed that hotplug of one setup does not work with recent change in
pci tree.
After checking the bridge conf setup, I noticed that the bridges get
assigned but do not get enabled.
The reason is the following commit, while simply ignores bridge
resources when enabling a pci device:
| commit bbef98ab0f019f1b0c25c1acdf1683c68933d41b
| Author: Ram Pai <linuxram@us.ibm.com>
| Date: Sun Nov 6 10:33:10 2011 +0800
|
| PCI: defer enablement of SRIOV BARS
|...
| NOTE: Note, there is subtle change in the pci_enable_device() API. Any
| driver that depends on SRIOV BARS to be enabled in pci_enable_device()
| can fail.
Put back bridge resource and ROM resource checking to fix the problem.
That should fix regression like BIOS does not assign correct resource to
bridge.
Discussion can be found at:
http://www.spinics.net/lists/linux-pci/msg12874.html
Paul Bolle [Sat, 5 Nov 2011 11:21:30 +0000 (12:21 +0100)]
kconfig: adapt update-po-config to new UML layout
Commit 5c48b108 ("um: take arch/um/sys-x86 to arch/x86/um") broke the
make target update-po-config, as its symlink trick (again) fails.
(Previous breakage was fixed with commit bdc69ca4 ("kconfig: change
update-po-config to reflect new layout of arch/um").)
The new UML layout allows to drop the symlick trick entirely. And if,
one day, another architecture supports UML too, that should now work
without again breaking this make target.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Michal Marek <mmarek@suse.cz>
Linus Torvalds [Sat, 17 Dec 2011 22:03:50 +0000 (14:03 -0800)]
Merge branches 'perf-urgent-for-linus' and 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf events: Fix ring_buffer_wakeup() brown paperbag bug
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Fix select_idle_sibling() regression in selecting an idle SMT sibling
MAINTAINERS: Update tip.git related git trees
Linus Torvalds [Sat, 17 Dec 2011 18:40:51 +0000 (10:40 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci:
PCI: Set device power state to PCI_D0 for device without native PM support
PCI hotplug: Always allow acpiphp to handle non-PCIe bridges
PCI: fix ats compile failure
PCI: defer enablement of SRIOV BARS
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc32: Be less strict in matching %lo part of relocation.
sbus: convert drivers/sbus/char/* to use module_platform_driver()
bbc_i2c: Remove unneeded err variable
sparc: Use kmemdup rather than duplicating its implementation
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
ipv6: Check dest prefix length on original route not copied one in rt6_alloc_cow().
sch_gred: should not use GFP_KERNEL while holding a spinlock
ipip, sit: copy parms.name after register_netdevice
ipv6: Fix for adding multicast route for loopback device automatically.
ssb: fix init regression with SoCs
rtl8192{ce,cu,de,se}: avoid problems because of possible ERFOFF -> ERFSLEEP transition
mac80211: fix another race in aggregation start
fsl_pq_mdio: Clean up tbi address configuration
ppp: fix pptp double release_sock in pptp_bind()
net/fec: fix the use of pdev->id
ath9k: fix check for antenna diversity support
batman-adv: delete global entry in case of roaming
batman-adv: in case of roaming mark the client with TT_CLIENT_ROAM
Bluetooth: Correct version check in hci_setup
btusb: fix a memory leak in btusb_send_frame()
Bluetooth: bnep: Fix module reference
Bluetooth: cmtp: Fix module reference
Bluetooth: btmrvl: support Marvell Bluetooth device SD8797
Linus Torvalds [Fri, 16 Dec 2011 20:15:50 +0000 (12:15 -0800)]
Merge branches 'for-linus' and 'for-linus-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: unplug every once and a while
Btrfs: deal with NULL srv_rsv in the delalloc inode reservation code
Btrfs: only set cache_generation if we setup the block group
Btrfs: don't panic if orphan item already exists
Btrfs: fix leaked space in truncate
Btrfs: fix how we do delalloc reservations and how we free reservations on error
Btrfs: deal with enospc from dirtying inodes properly
Btrfs: fix num_workers_starting bug and other bugs in async thread
BTRFS: Establish i_ops before calling d_instantiate
Btrfs: add a cond_resched() into the worker loop
Btrfs: fix ctime update of on-disk inode
btrfs: keep orphans for subvolume deletion
Btrfs: fix inaccurate available space on raid0 profile
Btrfs: fix wrong disk space information of the files
Btrfs: fix wrong i_size when truncating a file to a larger size
Btrfs: fix btrfs_end_bio to deal with write errors to a single mirror
* 'for-linus-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: lower the dirty balance poll interval
Linus Torvalds [Fri, 16 Dec 2011 19:27:56 +0000 (11:27 -0800)]
Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linux
* 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linux:
drm/i915/dp: Dither down to 6bpc if it makes the mode fit
drm/i915: enable semaphores on per-device defaults
drm/i915: don't set unpin_work if vblank_get fails
drm/i915: By default, enable RC6 on IVB and SNB when reasonable
iommu: Export intel_iommu_enabled to signal when iommu is in use
drm/i915/sdvo: Include LVDS panels for the IS_DIGITAL check
drm/i915: prevent division by zero when asking for chipset power
drm/i915: add PCH info to i915_capabilities
drm/i915: set the right SDVO transcoder for CPT
drm/i915: no-lvds quirk for ASUS AT5NM10T-I
drm/i915: Treat pre-gen4 backlight duty cycle value consistently
drm/i915: Hook up Ivybridge eDP
drm/i915: add multi-threaded forcewake support
Linus Torvalds [Fri, 16 Dec 2011 19:14:42 +0000 (11:14 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: HDA: Use LPIB Position fix for Intel SCH Poulsbo
ALSA: hda: fix mute led polarity for HP laptops with buggy BIOS
ALSA: HDA: Set position fix to LPIB for an Atom/Poulsbo based device
ASoC: Fix hx4700 error handling to free gpios if snd_soc_register_card fails
ASoC: WM8958: correctly show firmware magic on mismatch
ASoC: mxs: Add appropriate MODULE_ALIAS()
ASoC: mxs: Add missing MODULE_LICENSE("GPL")
ASoC: Fix WM8996 24.576MHz clock operation
ASoC: Include linux/module.h for smdk2443_wm9710
ASoC: Fix a typo in jive_wm8750
ASoC: Fix build dependency for SND_SOC_JZ4740_CODEC
ASoC: Include linux/io.h for jz4740 codec
Linus Torvalds [Fri, 16 Dec 2011 19:13:49 +0000 (11:13 -0800)]
Merge branch 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6
* 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6:
gpio: Fix DA9052 GPIO build errors.
gpio: mpc8xxx: don't allow input-only pins to be output for MPC5121
gpio-ml-ioh: Add the irq_disable/irq_enable hooks for ml-ioh irq chip
gpio-ml-ioh: fix a bug in the interrupt handler
gpio: pl061: drop extra check for NULL platform_data
Linus Torvalds [Fri, 16 Dec 2011 18:07:50 +0000 (10:07 -0800)]
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: OMAP: rx51: fix USB
ARM: OMAP: mcbsp: Fix possible memory corruption
arm/imx: fix power button on imx51 babbage board
ARM: imx: fix cpufreq build errors
ARM: mx5: add __initconst for fec pdata
MXC PWM: should active during DOZE/WAIT/DBG mode
ARM: EXYNOS: Fix build error without CONFIG_LOCAL_TIMERS
ARM: EXYNOS: Fix for stall in case of cpu hotplug or sleep
ARM: S5PV210: Set 1000ns as PWM backlight period on SMDKV210
ARM: SAMSUNG: remove duplicated header include
Wu Fengguang [Fri, 16 Dec 2011 17:32:57 +0000 (12:32 -0500)]
btrfs: lower the dirty balance poll interval
Tests show that the original large intervals can easily make the dirty
limit exceeded on 100 concurrent dd's. So adapt to as large as the
next check point selected by the dirty throttling algorithm.
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
v2: Rebased to current code, resulting in the fix applying to EDP panels as
well. Also changed from spatio-temporal to just spatial dithering on
pre-ironlake, to be conssitent (and less visual flicker)
Signed-off-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Eric Anholt <eric@anholt.net> Tested-by: Eric Anholt <eric@anholt.net> Tested-by: Dirk Hohndel <hohndel@infradead.org> Signed-off-by: Keith Packard <keithp@keithp.com>
Eugeni Dodonov [Sat, 10 Dec 2011 01:16:37 +0000 (17:16 -0800)]
drm/i915: enable semaphores on per-device defaults
This adds a default setting for semaphores parameter, and enables
semaphores by default on IVB.
For now, as semaphores interaction with VTd causes random issues on
SNB, we do not enable them by default. But they can still be enabled
via the semaphores=1 kernel parameter.
v2: enables semaphores on SNB when IO remapping is disabled, with base
on Keith Packard patch.
CC: Daniel Vetter <daniel.vetter@ffwll.ch> CC: Ben Widawsky <ben@bwidawsk.net> CC: Keith Packard <keithp@keithp.com> CC: Jesse Barnes <jbarnes@virtuousgeek.org> CC: Chris Wilson <chris@chris-wilson.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=42696
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=40564
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41353
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38862 Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com> Signed-off-by: Keith Packard <keithp@keithp.com>
Jesse Barnes [Mon, 29 Aug 2011 16:45:28 +0000 (09:45 -0700)]
drm/i915: don't set unpin_work if vblank_get fails
This fixes a race where we may try to finish a page flip and decrement
the refcount even if our vblank_get failed and we ended up with a
spurious flip pending interrupt.
Keith Packard [Thu, 17 Nov 2011 06:24:52 +0000 (22:24 -0800)]
drm/i915: By default, enable RC6 on IVB and SNB when reasonable
RC6 should always work on IVB, and should work on SNB whenever IO
remapping is disabled. RC6 never works on Ironlake. Make the default
value for the parameter follow these guidelines. Setting the value
to either 0 or 1 will force the specified behavior.
Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38567 Cc: Ted Phelps <phelps@gnusto.com> Cc: Peter <pab1612@gmail.com> Cc: Lukas Hejtmanek <xhejtman@fi.muni.cz> Cc: Andrew Lutomirski <luto@mit.edu>
Eugeni Dodonov [Wed, 23 Nov 2011 18:42:14 +0000 (16:42 -0200)]
iommu: Export intel_iommu_enabled to signal when iommu is in use
In i915 driver, we do not enable either rc6 or semaphores on SNB when dmar
is enabled. The new 'intel_iommu_enabled' variable signals when the
iommu code is in operation.
Cc: Ted Phelps <phelps@gnusto.com> Cc: Peter <pab1612@gmail.com> Cc: Lukas Hejtmanek <xhejtman@fi.muni.cz> Cc: Andrew Lutomirski <luto@mit.edu> CC: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Eugeni Dodonov <eugeni.dodonov@intel.com> Signed-off-by: Keith Packard <keithp@keithp.com>
Chris Wilson [Mon, 20 Jun 2011 13:45:50 +0000 (14:45 +0100)]
drm/i915/sdvo: Include LVDS panels for the IS_DIGITAL check
We were checking whether the supplied edid matched the connector it was
read from. We do this in case a DDC read returns an EDID for another
device on a multifunction or otherwise interesting card. However, we
failed to include LVDS as a digital device and so rejecting an otherwise
valid EDID.
Fixes the detection of the secondary SDVO LVDS panel on the Libretto
W105.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Adam Jackson <ajax@redhat.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=39216 Signed-off-by: Keith Packard <keithp@keithp.com>
Eugeni Dodonov [Thu, 10 Nov 2011 15:55:15 +0000 (13:55 -0200)]
drm/i915: prevent division by zero when asking for chipset power
This prevents an in-kernel division by zero which happens when we are
asking for i915_chipset_val too quickly, or within a race condition
between the power monitoring thread and userspace accesses via debugfs.
The issue can be reproduced easily via the following command:
while ``; do cat /sys/kernel/debug/dri/0/i915_emon_status; done
This is particularly dangerous because it can be triggered by
a non-privileged user by just reading the debugfs entry.
This issue was also found independently by Konstantin Belousov
<kostikbel@gmail.com>, who proposed a similar patch.
Reported-by: Konstantin Belousov <kostikbel@gmail.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Acked-by: Keith Packard <keithp@keithp.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: <stable@vger.kernel.org> Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com> Signed-off-by: Keith Packard <keithp@keithp.com>
Paulo Zanoni [Fri, 14 Oct 2011 21:17:41 +0000 (18:17 -0300)]
drm/i915: add PCH info to i915_capabilities
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Keith Packard <keithp@keithp.com>
Paulo Zanoni [Fri, 14 Oct 2011 21:16:22 +0000 (18:16 -0300)]
drm/i915: set the right SDVO transcoder for CPT
v2: add a CPT-specific macro, make code cleaner
v3: fix commit message
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41272 Cc: stable@kernel.org Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Keith Packard <keithp@keithp.com>
Nicolas Ferre [Thu, 24 Nov 2011 21:21:14 +0000 (22:21 +0100)]
net/at91_ether: use gpio_is_valid for phy IRQ line
Use the generic gpiolib gpio_is_valid() function to test
if the phy IRQ line GPIO is actually provided.
For non-connected or non-existing phy IRQ lines, -EINVAL
value is used for phy_irq_pin field of struct at91_eth_data.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: David S. Miller <davem@davemloft.net>
sched: Avoid SMT siblings in select_idle_sibling() if possible
stopped selecting an idle SMT sibling when there are no idle
cores in a single socket system.
Intent of the select_idle_sibling() was to fallback to an idle
SMT sibling, if it fails to identify an idle core. But this
fallback was not happening on systems where all the scheduler
domains had `SD_SHARE_PKG_RESOURCES' flag set.
Fix it. Slightly bigger patch of cleaning all these goto's etc
is queued up for the next release.
Reported-by: Mike Galbraith <efault@gmx.de> Reported-by: Alex Shi <alex.shi@intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Link: http://lkml.kernel.org/r/1323978421.1984.244.camel@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
Linus Torvalds [Thu, 15 Dec 2011 22:15:01 +0000 (14:15 -0800)]
Merge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: r8712u: Add new USB ID
staging: tidspbridge: request dmtimer clocks on init
staging: tidspbridge: include module.h by default
ARM: unwinder: fix bisection to find origin in .idx section
The bisection implemented in unwind_find_origin() stopped to early. If
there is only a single entry left to check the original code just took
the end point as origin which might be wrong.
This was introduced in commit de66a979012d ("ARM: 7187/1: fix unwinding
for XIP kernels").
Tejun Heo [Thu, 15 Dec 2011 19:03:04 +0000 (20:03 +0100)]
block: don't kick empty queue in blk_drain_queue()
While probing, fd sets up queue, probes hardware and tears down the
queue if probing fails. In the process, blk_drain_queue() kicks the
queue which failed to finish initialization and fd is unhappy about
that.
Linus Torvalds [Thu, 15 Dec 2011 18:52:40 +0000 (10:52 -0800)]
Merge branch 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/swiotlb: Use page alignment for early buffer allocation.
xen: only limit memory map to maximum reservation for domain 0.
xen/swiotlb: Use page alignment for early buffer allocation.
This fixes an odd bug found on a Dell PowerEdge 1850/0RC130
(BIOS A05 01/09/2006) where all of the modules doing pci_set_dma_mask
would fail with:
ata_piix 0000:00:1f.1: enabling device (0005 -> 0007)
ata_piix 0000:00:1f.1: can't derive routing for PCI INT A
ata_piix 0000:00:1f.1: BMDMA: failed to set dma mask, falling back to PIO
The issue was the Xen-SWIOTLB was allocated such as that the end of
buffer was stradling a page (and also above 4GB). The fix was
spotted by Kalev Leonid which was to piggyback on git commit e79f86b2ef9c0a8c47225217c1018b7d3d90101c "swiotlb: Use page alignment
for early buffer allocation" which:
We could call free_bootmem_late() if swiotlb is not used, and
it will shrink to page alignment.
So alloc them with page alignment at first, to avoid lose two pages
Ian Campbell [Wed, 14 Dec 2011 12:16:08 +0000 (12:16 +0000)]
xen: only limit memory map to maximum reservation for domain 0.
d312ae878b6a "xen: use maximum reservation to limit amount of usable RAM"
clamped the total amount of RAM to the current maximum reservation. This is
correct for dom0 but is not correct for guest domains. In order to boot a guest
"pre-ballooned" (e.g. with memory=1G but maxmem=2G) in order to allow for
future memory expansion the guest must derive max_pfn from the e820 provided by
the toolstack and not the current maximum reservation (which can reflect only
the current maximum, not the guest lifetime max). The existing algorithm
already behaves this correctly if we do not artificially limit the maximum
number of pages for the guest case.
With this change "xl mem-set <domain> 512M" will successfully increase the
guest RAM (by reducing the balloon).
There is no change for dom0.
Reported-and-Tested-by: George Shuklin <george.shuklin@gmail.com> Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: stable@kernel.org Reviewed-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Josef Bacik [Tue, 13 Dec 2011 21:04:54 +0000 (16:04 -0500)]
Btrfs: only set cache_generation if we setup the block group
A user reported a problem booting into a new kernel with the old format inodes.
He was panicing in cow_file_range while writing out the inode cache. This is
because if the block group is not cached we'll just skip writing out the cache,
however if it gets dirtied again in the same transaction and it finished caching
we'd go ahead and write it out, but since we set cache_generation to the transid
we think we've already truncated it and will just carry on, running into
cow_file_range and blowing up. We need to make sure we only set
cache_generation if we've done the truncate. The user tested this patch and
verified that the panic no longer occured. Thanks,
Reported-and-Tested-by: Klaus Bitto <klaus.bitto@gmail.com> Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Tue, 13 Dec 2011 17:55:58 +0000 (12:55 -0500)]
Btrfs: don't panic if orphan item already exists
I've been hitting this BUG_ON() in btrfs_orphan_add when running xfstest 269 in
a loop. This is because we will add an orphan item, do the truncate, the
truncate will fail for whatever reason (*cough*ENOSPC*cough*) and then we're
left with an orphan item still in the fs. Then we come back later to do another
truncate and it blows up because we already have an orphan item. This is ok so
just fix the BUG_ON() to only BUG() if ret is not EEXIST. Thanks,
Josef Bacik [Fri, 9 Dec 2011 18:26:22 +0000 (13:26 -0500)]
Btrfs: fix leaked space in truncate
We were occasionaly leaking space when running xfstest 269. This is because if
we failed to start the transaction in the truncate loop we'd just goto out, but
we need to break so that the inode is removed from the orphan list and the space
is properly freed. Thanks,
Josef Bacik [Fri, 9 Dec 2011 16:18:51 +0000 (11:18 -0500)]
Btrfs: fix how we do delalloc reservations and how we free reservations on error
Running xfstests 269 with some tracing my scripts kept spitting out errors about
releasing bytes that we didn't actually have reserved. This took me down a huge
rabbit hole and it turns out the way we deal with reserved_extents is wrong,
we need to only be setting it if the reservation succeeds, otherwise the free()
method will come in and unreserve space that isn't actually reserved yet, which
can lead to other warnings and such. The math was all working out right in the
end, but it caused all sorts of other issues in addition to making my scripts
yell and scream and generally make it impossible for me to track down the
original issue I was looking for. The other problem is with our error handling
in the reservation code. There are two cases that we need to deal with
1) We raced with free. In this case free won't free anything because csum_bytes
is modified before we dro the lock in our reservation path, so free rightly
doesn't release any space because the reservation code may be depending on that
reservation. However if we fail, we need the reservation side to do the free at
that point since that space is no longer in use. So as it stands the code was
doing this fine and it worked out, except in case #2
2) We don't race with free. Nobody comes in and changes anything, and our
reservation fails. In this case we didn't reserve anything anyway and we just
need to clean up csum_bytes but not free anything. So we keep track of
csum_bytes before we drop the lock and if it hasn't changed we know we can just
decrement csum_bytes and carry on.
Because of the case where we can race with free()'s since we have to drop our
spin_lock to do the reservation, I'm going to serialize all reservations with
the i_mutex. We already get this for free in the heavy use paths, truncate and
file write all hold the i_mutex, just needed to add it to page_mkwrite and
various ioctl/balance things. With this patch my space leak scripts no longer
scream bloody murder. Thanks,
Josef Bacik [Wed, 30 Nov 2011 15:45:38 +0000 (10:45 -0500)]
Btrfs: deal with enospc from dirtying inodes properly
Now that we're properly keeping track of delayed inode space we've been getting
a lot of warnings out of btrfs_dirty_inode() when running xfstest 83. This is
because a bunch of people call mark_inode_dirty, which is void so we can't
return ENOSPC. This needs to be fixed in a few areas
1) file_update_time - this updates the mtime and such when writing to a file,
which will call mark_inode_dirty. So copy file_update_time into btrfs so we can
call btrfs_dirty_inode directly and return an error if we get one appropriately.
2) fix symlinks to use btrfs_setattr for ->setattr. For some reason we weren't
setting ->setattr for symlinks, even though we should have been. This catches
one of the cases where we were getting errors in mark_inode_dirty.
3) Fix btrfs_setattr and btrfs_setsize to call btrfs_dirty_inode directly
instead of mark_inode_dirty. This lets us return errors properly for truncate
and chown/anything related to setattr.
4) Add a new btrfs_fs_dirty_inode which will just call btrfs_dirty_inode and
print an error if we have one. The only remaining user we can't control for
this is touch_atime(), but we don't really want to keep people from walking
down the tree if we don't have space to save the atime update, so just complain
but don't worry about it.
With this patch xfstests 83 complains a handful of times instead of hundreds of
times. Thanks,
Josef Bacik [Fri, 18 Nov 2011 19:37:27 +0000 (14:37 -0500)]
Btrfs: fix num_workers_starting bug and other bugs in async thread
Al pointed out we have some random problems with the way we account for
num_workers_starting in the async thread stuff. First of all we need to make
sure to decrement num_workers_starting if we fail to start the worker, so make
__btrfs_start_workers do this. Also fix __btrfs_start_workers so that it
doesn't call btrfs_stop_workers(), there is no point in stopping everybody if we
failed to create a worker. Also check_pending_worker_creates needs to call
__btrfs_start_work in it's work function since it already increments
num_workers_starting.
People only start one worker at a time, so get rid of the num_workers argument
everywhere, and make btrfs_queue_worker a void since it will always succeed.
Thanks,
Casey Schaufler [Thu, 15 Dec 2011 15:09:07 +0000 (10:09 -0500)]
BTRFS: Establish i_ops before calling d_instantiate
The Smack LSM hook for security_d_instantiate checks
the inode's i_op->getxattr value to determine if the
containing filesystem supports extended attributes.
The BTRFS filesystem sets the inode's i_op value only
after it has instantiated the inode. This results in
Smack incorrectly giving new BTRFS inodes attributes
from the filesystem defaults on the assumption that
values can't be stored on the filesystem. This patch
moves the assignment of inode operation vectors ahead
of the calls to d_instantiate, letting Smack know that
the filesystem supports extended attributes. There
should be no impact on the performance or behavior of
BTRFS.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 15 Dec 2011 14:29:43 +0000 (09:29 -0500)]
Btrfs: add a cond_resched() into the worker loop
If we have a constant stream of end_io completions or crc work,
we can hit softlockup messages from the async helper threads. This
adds a cond_resched() into the loop to avoid them.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Arne Jansen [Thu, 15 Dec 2011 01:12:02 +0000 (20:12 -0500)]
btrfs: keep orphans for subvolume deletion
Since we have the free space caches, btrfs_orphan_cleanup also runs for
the tree_root. Unfortunately this also cleans up the orphans used to mark
subvol deletions in progress.
Currently if a subvol deletion gets interrupted twice by umount/mount, the
deletion will not be continued and the space permanently lost, though it
would be possible to write a tool to recover those lost subvol deletions.
This patch checks if the orphan belongs to a subvol (dead root) and skips
the deletion.
Signed-off-by: Arne Jansen <sensille@gmx.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Miao Xie [Thu, 15 Dec 2011 01:12:02 +0000 (20:12 -0500)]
Btrfs: fix inaccurate available space on raid0 profile
When we use raid0 as the data profile, df command may show us a very
inaccurate value of the available space, which may be much less than the
real one. It may make the users puzzled. Fix it by changing the calculation
of the available space, and making it be more similar to a fake chunk
allocation.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Miao Xie [Thu, 15 Dec 2011 01:12:02 +0000 (20:12 -0500)]
Btrfs: fix wrong disk space information of the files
Btrfsck report errors after the 83th case of xfstests was run, The error
number is 400, it means the used disk space of the file is wrong.
The reason of this bug is that:
The file truncation may fail when the space of the file system is not enough,
and leave some file extents, whose offset are beyond the end of the files.
When we want to expand those files, we will drop those file extents, and
put in dummy file extents, and then we should update the i-node. But btrfs
forgets to do it.
This patch adds the forgotten i-node update.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Miao Xie [Thu, 15 Dec 2011 01:12:01 +0000 (20:12 -0500)]
Btrfs: fix wrong i_size when truncating a file to a larger size
Btrfsck report error 100 after the 83th case of xfstests was run, it means
the i_size of the file is wrong.
The reason of this bug is that:
Btrfs increased i_size of the file at the beginning, but it failed to expand
the file, and failed to update the i_size to the old size because there is no
enough space in the file system, so we found a wrong i_size.
This patch fixes this bug by updating the i_size just when we pass the file
expanding and get enough space to update i-node.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Paul Gortmaker [Thu, 8 Dec 2011 01:47:29 +0000 (20:47 -0500)]
ARM: at91: delete the pcontrol_g20_defconfig
In routine testing I found this file should not specify a site
specific toolchain path. I suggested that the defconfigs should
not be calling out site specific toolchain locations, so we should
delete the setting of CROSS_COMPILE. In response, it was indicated
that this is an obsolete defconfig and it should simply be deleted.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
ALSA: HDA: Use LPIB Position fix for Intel SCH Poulsbo
Several people with this chipset have reported inconsistent/sloppy
values for position reporting when the DMA position buffer is used,
and that setting position_fix=1 have fixed their problems.
BugLink: https://bugs.launchpad.net/bugs/825709 Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
john fastabend [Fri, 18 Nov 2011 21:35:56 +0000 (13:35 -0800)]
[SCSI] fcoe: fix fcoe in a DCB environment by adding DCB notifiers to set skb priority
Use DCB notifiers to set the skb priority to allow packets
to be steered and tagged correctly over DCB enabled drivers
that setup traffic classes.
This allows queue_mapping() routines to be removed in these
drivers that were previously inspecting the ethertype of
every skb to mark FCoE/FIP frames.
Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Linus Torvalds [Thu, 15 Dec 2011 02:25:58 +0000 (18:25 -0800)]
Merge tag 'tytso-for-linus-20111214' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* tag 'tytso-for-linus-20111214' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: handle EOF correctly in ext4_bio_write_page()
ext4: remove a wrong BUG_ON in ext4_ext_convert_to_initialized
ext4: correctly handle pages w/o buffers in ext4_discard_partial_buffers()
ext4: avoid potential hang in mpage_submit_io() when blocksize < pagesize
ext4: avoid hangs in ext4_da_should_update_i_disksize()
ext4: display the correct mount option in /proc/mounts for [no]init_itable
ext4: Fix crash due to getting bogus eh_depth value on big-endian systems
ext4: fix ext4_end_io_dio() racing against fsync()
.. using the new signed tag merge of git that now verifies the gpg
signature automatically. Yay. The branchname was just 'dev', which is
prettier. I'll tell Ted to use nicer tag names for future cases.
Linus Torvalds [Thu, 15 Dec 2011 02:22:55 +0000 (18:22 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs/ncpfs: fix error paths and goto statements in ncp_fill_super()
configfs: register_filesystem() called too early
fuse: register_filesystem() called too early
ubifs: too early register_filesystem()
... and the same kind of leak for mqueue
procfs: fix a vfsmount longterm reference leak
David S. Miller [Wed, 14 Dec 2011 18:05:22 +0000 (10:05 -0800)]
sparc32: Be less strict in matching %lo part of relocation.
The "(insn & 0x01800000) != 0x01800000" test matches 'restore'
but that is a legitimate place to see the %lo() part of a 32-bit
symbol relocation, particularly in tail calls.
Signed-off-by: David S. Miller <davem@davemloft.net> Tested-by: Sergei Trofimovich <slyfox@gentoo.org>
Fix the case of HT40 after association on specified AP, but it break the
association for some APs and cause not able to establish connection.
We need to address HT40 before and after addociation.
CC: stable@vger.kernel.org #3.0+ Reported-by: Andrej Gelenberg <andrej.gelenberg@udo.edu> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Tested-by: Andrej Gelenberg <andrej.gelenberg@udo.edu> Signed-off-by: John W. Linville <linville@tuxdriver.com>
projects / karo-tx-linux.git / log