-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJUzvgKAAoJEHm+PkMAQRiG8XQH/1qVbHI4pP0KcnzfZUHq/mXq
RuS4aJMwLm/Y6cXFraXBDaPde1A3CPtwtpob2C6giKcfu2zXGunY65haOEeJWNpX
lCbBsLkNC3oDNkygBpVr5Zd6yibaw63WBjjLnpAi7pn2G2Zm2zB8DfILWWWMb7yz
MH8ZXV+/xIYCTkjNWGWA1iMjmdYqu0PQHPeOgLsYQ+u7rxfM1zb/wHEkjqUZS6iu
IaaZv7PV2PnFYnqib/iIPYjAEDvSQ4vN/7b82zlFd2Culm9j/568KCCWUPhJTb2l
X0u4QYs49GnMTWVRa3bgYxS/nTUaE/6DeWs2y2WzqTt0/XDntVUnok0blUeDxGk=
=o2kS
-----END PGP SIGNATURE-----
Merge tag 'v3.19-rc7' into x86/asm, to refresh the branch before pulling in new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
One more week's worth of fixes. Worth pointing out here are:
- A patch fixing detaching of iommu registrations when a device is removed --
earlier the ops pointer wasn't managed properly
- Another set of Renesas boards get the same GIC setup fixup as others have in
previous -rcs
- Serial port aliases fixups for sunxi. We did the same to tegra but we
caught that in time before the merge window due to more machines being
affected. Here it took longer for anyone to notice.
- A couple more DT tweaks on sunxi
- A follow-up patch for the mvebu coherency disabling in last -rc batch
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=nw2v
-----END PGP SIGNATURE-----
Merge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"One more week's worth of fixes. Worth pointing out here are:
- A patch fixing detaching of iommu registrations when a device is
removed -- earlier the ops pointer wasn't managed properly
- Another set of Renesas boards get the same GIC setup fixup as
others have in previous -rcs
- Serial port aliases fixups for sunxi. We did the same to tegra but
we caught that in time before the merge window due to more machines
being affected. Here it took longer for anyone to notice.
- A couple more DT tweaks on sunxi
- A follow-up patch for the mvebu coherency disabling in last -rc
batch"
* tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm: dma-mapping: Set DMA IOMMU ops in arm_iommu_attach_device()
ARM: shmobile: r8a7790: Instantiate GIC from C board code in legacy builds
ARM: shmobile: r8a73a4: Instantiate GIC from C board code in legacy builds
ARM: mvebu: don't set the PL310 in I/O coherency mode when I/O coherency is disabled
ARM: sunxi: dt: Fix aliases
ARM: dts: sun4i: Add simplefb node with de_fe0-de_be0-lcd0-hdmi pipeline
ARM: dts: sun6i: ippo-q8h-v5: Fix serial0 alias
ARM: dts: sunxi: Fix usb-phy support for sun4i/sun5i
Pull input layer updates from Dmitry Torokhov:
"Just a few quirks for PS/2 this time"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: elantech - add more Fujtisu notebooks to force crc_enabled
Input: i8042 - add noloop quirk for Medion Akoya E7225 (MD98857)
Input: synaptics - adjust min/max for Lenovo ThinkPad X1 Carbon 2nd
Commit 8eb23b9f35 ("sched: Debug nested sleeps") added code to report
on nested sleep conditions, which we generally want to avoid because the
inner sleeping operation can re-set the thread state to TASK_RUNNING,
but that will then cause the outer sleep loop not actually sleep when it
calls schedule.
However, that's actually valid traditional behavior, with the inner
sleep being some fairly rare case (like taking a sleeping lock that
normally doesn't actually need to sleep).
And the debug code would actually change the state of the task to
TASK_RUNNING internally, which makes that kind of traditional and
working code not work at all, because now the nested sleep doesn't just
sometimes cause the outer one to not block, but will cause it to happen
every time.
In particular, it will cause the cardbus kernel daemon (pccardd) to
basically busy-loop doing scheduling, converting a laptop into a heater,
as reported by Bruno Prémont. But there may be other legacy uses of
that nested sleep model in other drivers that are also likely to never
get converted to the new model.
This fixes both cases:
- don't set TASK_RUNNING when the nested condition happens (note: even
if WARN_ONCE() only _warns_ once, the return value isn't whether the
warning happened, but whether the condition for the warning was true.
So despite the warning only happening once, the "if (WARN_ON(..))"
would trigger for every nested sleep.
- in the cases where we knowingly disable the warning by using
"sched_annotate_sleep()", don't change the task state (that is used
for all core scheduling decisions), instead use '->task_state_change'
that is used for the debugging decision itself.
(Credit for the second part of the fix goes to Oleg Nesterov: "Can't we
avoid this subtle change in behaviour DEBUG_ATOMIC_SLEEP adds?" with the
suggested change to use 'task_state_change' as part of the test)
Reported-and-bisected-by: Bruno Prémont <bonbons@linux-vserver.org>
Tested-by: Rafael J Wysocki <rjw@rjwysocki.net>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Cc: Ilya Dryomov <ilya.dryomov@inktank.com>,
Cc: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Hurley <peter@hurleysoftware.com>,
Cc: Davidlohr Bueso <dave@stgolabs.net>,
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add two more Fujitsu LIFEBOOK models that also ship with the Elantech
touchpad and don't work with crc_disabled to the quirk list.
Signed-off-by: Rainer Koenig <Rainer.Koenig@ts.fujitsu.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
* Instantiate GIC from C board code in legacy builds on r8a7790 and r8a73a4
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=/Oq9
-----END PGP SIGNATURE-----
Merge tag 'renesas-soc-fixes3-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
Merge "Third Round of Renesas ARM Based SoC Fixes for v3.19" from Simon Horman:
* Instantiate GIC from C board code in legacy builds on r8a7790 and r8a73a4
* tag 'renesas-soc-fixes3-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: r8a7790: Instantiate GIC from C board code in legacy builds
ARM: shmobile: r8a73a4: Instantiate GIC from C board code in legacy builds
Signed-off-by: Olof Johansson <olof@lixom.net>
Pull i2c fixes from Wolfram Sang:
"i2c driver bugfixes (s3c2410, slave-eeprom, sh_mobile), size
regression "bugfix" (i2c slave), documentation bugfix (st).
Also, one documentation update (da9063), so some devicetrees can now
be verified"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: sh_mobile: terminate DMA reads properly
i2c: Only include slave support if selected
i2c: s3c2410: fix ABBA deadlock by keeping clock prepared
i2c: slave-eeprom: fix boundary check when using sysfs
i2c: st: Rename clock reference to something that exists
DT: i2c: Add devices handled by the da9063 MFD driver
Here are two tiny patches, one fixing up the drivers/Kconfig file, and
one adding a MAINTAINERS entry for the UIO git tree.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iEYEABECAAYFAlTML2MACgkQMUfUDdst+ynVBQCfUDkF9rW1UziWD7z1suWoIb46
wa8An0Szv5VAQXctCojeRWDPqZHPyVlD
=Kje6
-----END PGP SIGNATURE-----
Merge tag 'char-misc-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are two tiny patches, one fixing up the drivers/Kconfig file, and
one adding a MAINTAINERS entry for the UIO git tree"
* tag 'char-misc-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
drivers/Kconfig: remove duplicate entry for soc
MAINTAINERS: add git url entry for UIO
Here are two tiny staging tree fixes. One for the nvec driver to
resolve a reported problem, and one to add a MAINTAINERS entry for the
Android drivers.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iEYEABECAAYFAlTML9gACgkQMUfUDdst+ylHaQCeKSr7xYfSFhLpm+Uulqddn6xS
FP0An1cX7t2NCj5glf69MmP6gIKD45Lx
=Xje7
-----END PGP SIGNATURE-----
Merge tag 'staging-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging tree fixes from Greg KH:
"Here are two tiny staging tree fixes. One for the nvec driver to
resolve a reported problem, and one to add a MAINTAINERS entry for the
Android drivers"
* tag 'staging-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
MAINTAINERS: add Android driver entries
staging: nvec: specify a platform-device base id
Here are some small USB fixes and quirk additions for 3.19-rc7.
All have been in linux-next for a while with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iEYEABECAAYFAlTMMEIACgkQMUfUDdst+ynPyQCfd95j9DLPlMpdDQJSzKfGRAvx
lvMAoIChCVtG8qMn6DuceGGADTKeAit6
=VqrZ
-----END PGP SIGNATURE-----
Merge tag 'usb-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB fixes and quirk additions for 3.19-rc7.
All have been in linux-next for a while with no reported problems"
* tag 'usb-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: Add OTG PET device to TPL
usb-storage/SCSI: blacklist FUA on JMicron 152d:2566 USB-SATA controller
uas: Add no-report-opcodes quirk for Simpletech devices with id 4971:8017
storage: Revise/fix quirk for 04E6:000F SCM USB-SCSI converter
usb: phy: never defer probe in non-OF case
usb: dwc2: call dwc2_is_controller_alive() under spinlock
Pull perf fixes from Ingo Molnar:
"Mostly tooling fixes, but also an event groups fix, two PMU driver
fixes and a CPU model variant addition"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Tighten (and fix) the grouping condition
perf/x86/intel: Add model number for Airmont
perf/rapl: Fix crash in rapl_scale()
perf/x86/intel/uncore: Move uncore_box_init() out of driver initialization
perf probe: Fix probing kretprobes
perf symbols: Introduce 'for' method to iterate over the symbols with a given name
perf probe: Do not rely on map__load() filter to find symbols
perf symbols: Introduce method to iterate symbols ordered by name
perf symbols: Return the first entry with a given name in find_by_name method
perf annotate: Fix memory leaks in LOCK handling
perf annotate: Handle ins parsing failures
perf scripting perl: Force to use stdbool
perf evlist: Remove extraneous 'was' on error message
Pull btrfs fix from Chris Mason:
"We have one more fix for btrfs in my for-linus branch - this was a bug
in the new raid5/6 scrubbing support"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: fix raid56 scrub failed in xfstests btrfs/072
Pull quota and UDF fix from Jan Kara:
"A fix for UDF to properly free preallocated blocks and a fix for quota
so that Q_GETQUOTA quotactl reports correct numbers for XFS filesystem
(and similarly Q_XGETQUOTA quotactl works properly for other
filesystems)"
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
quota: Switch ->get_dqblk() and ->set_dqblk() to use bytes as space units
udf: Release preallocation on last writeable close
for x86 (bug introduced in 3.19).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)
iQEcBAABAgAGBQJUy2ulAAoJEL/70l94x66D18kIAJhuh2k5Mt3TfP/zfhi2Y6ER
IAZqyFODs8txZ3v432PB8yWWvr2XfJ3gwfjvurLygQJ3jCGZqDrmucbUUXzEaPUk
mPnLpxV0ZEmNweS2HLGPX9HJ6zfsZ1dHRk55Tko9ynAO731q7yPjj6HC0th8wzvE
BRv5y/18rY2zyar+5Azpj5wpOSllq0ynMgjWXGSlaTLbQoyvgZtzbqNY6nsAGrKw
e8hSUPogfGUmZkBHHHVDYKpgHvWS1hARyuGFo8LeKXKPo7qhYxZHCDpch8TXnq2y
21IvQfYddGpcMsaTroA5qyXFigxCX+1j3po6MS3ZH9GGXS5fC3sI8t0EDxKiO6Q=
=O4X0
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"The ARM changes are largish, but not too scary. And a simple fix for
x86 (bug introduced in 3.19)"
(Paolo sayus these are the "Final" fixes. We'll see).
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: check LAPIC presence when building apic_map
arm/arm64: KVM: Use kernel mapping to perform invalidation on page fault
arm/arm64: KVM: Invalidate data cache on unmap
arm/arm64: KVM: Use set/way op trapping to track the state of the caches
Two small fixes for the Tegra GART IOMMU driver:
* Provide a .map_sg function for iommu_ops
* Do not register Tegra GART driver as a workaround because of
issues with it when used from DRM code
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=+61b
-----END PGP SIGNATURE-----
Merge tag 'iommu-fixes-v3.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
"Two small fixes for the Tegra GART IOMMU driver:
- provide a .map_sg function for iommu_ops
- do not register Tegra GART driver as a workaround because of issues
with it when used from DRM code"
* tag 'iommu-fixes-v3.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/tegra: gart: Provide default ->map_sg() callback
iommu/tegra: gart: Do not register with bus
Pull intel and dp mst drm fixes from Dave Airlie:
"Intel had a few more fixes lined up and no point me sitting on them,
along with a DP MST fix from Rob for a race at undock + vt switch"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm: fix fb-helper vs MST dangling connector ptrs (v2)
drm/i915: BDW Fix Halo PCI IDs marked as ULT.
drm/i915: Fix and clean BDW PCH identification
drm/i915: Only fence tiled region of object.
drm/i915: fix inconsistent brightness after resume
drm/i915: Init PPGTT before context enable
DMA read requests could miss proper termination, so two more bytes would
have been read via PIO overwriting the end of the buffer with wrong
data. Make DMA stop handling more readable while we are here.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
We forgot to re-check LAPIC after splitting the loop in commit
173beedc16 (KVM: x86: Software disabled APIC should still deliver
NMIs, 2014-11-02).
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Fixes: 173beedc16
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fixes memory corruption issues on APM platforms and swapping issues on
DMA-coherent systems.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJUyrVCAAoJEEtpOizt6ddy/rgH/1gFfX3zGryDYwbFz2BbnMk8
zJeQfeaOD4TF/6k8UZctrJatoqPgMCmVMAbT7uuZ+zwOYPYDGijGeJOYKS6IcIcj
Lhl0QjbwBUaC58jZhhKGStZTKV2w9L7JK3RFStw+cE2HAAKcZQSVdfnM7ZoyyaRC
qbFqPXLppSSZXD1R+/F17+mM8bogRmdS4we0o7J1KCT6hWbnK1CJkScxXLapbl5Y
tKZSMM+k+L7wvgDnuzepTY+rFna3LSLQXNli0nPX9ByRFR4nMjeJKwm68kOaTU1r
y1naOS3F6kl7S0OiCzyzekM4U330MAVmTyvlT9GHAHCVyjzavGQuuBFHdcdnvvc=
=rJUG
-----END PGP SIGNATURE-----
Merge tag 'kvm-arm-fixes-3.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
Second round of fixes for KVM/ARM for 3.19.
Fixes memory corruption issues on APM platforms and swapping issues on
DMA-coherent systems.
misc i915 fixes, mostly all stable material as well.
* tag 'drm-intel-fixes-2015-01-29' of git://anongit.freedesktop.org/drm-intel:
drm/i915: BDW Fix Halo PCI IDs marked as ULT.
drm/i915: Fix and clean BDW PCH identification
drm/i915: Only fence tiled region of object.
drm/i915: fix inconsistent brightness after resume
drm/i915: Init PPGTT before context enable
VT switch back/forth from console to xserver (for example) has potential
to go horribly wrong if a dynamic DP MST connector ends up in the saved
modeset that is restored when switching back to fbcon.
When removing a dynamic connector, don't forget to clean up the saved
state.
v1: original
v2: null out set->fb if no more connectors to avoid making i915 cranky
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1184968
Cc: stable@vger.kernel.org #v3.17+
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
dm-thin:
- fix DM cache metadata open/lookup error paths to properly use ERR_PTR
and IS_ERR (fixes: 3.19-rc6 "stable" commit 9b1cc9f251)
- fix DM thin-provisioning to disallow userspace from sending messages
to the thin-pool if the pool is in READ_ONLY or FAIL mode since no
metadata changes are not allowed in these modes.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJUyTJ8AAoJEMUj8QotnQNa4O0H/2f9FClhSdBUzohalVi6Vxd1
2S+b/EOVZGfQQhxNSoudJXxBAre3hxseQc17ofMBY1lzgDugkoRleH79fPacoqNX
oE+CfrFuabY/I7ubIepQunaSiJ/9Ypetba0UGHqktXNRdyQ+ezHplPNcOP3NUwfq
0BfBDCHNdRMIz1ptZoXaeRP96oCziI9gRhkx+ChNmb7XxwHgYp96Bmk/UdYvitUT
iThPkT5dXnHPMK09p7ZtrLfAk1QRWrkxJREAlR9df3FAn+kr+wZHz1CtL1m+05jC
7ADssIzeSldeeYcfLC0z5joVNxD0A+QKtPMz/gHvbzhxWmTcCrrIOZzXeF5c89w=
=f9jv
-----END PGP SIGNATURE-----
Merge tag 'dm-3.19-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
"One stable fix for a dm-cache 3.19-rc6 regression and one stable fix
for dm-thin:
- fix DM cache metadata open/lookup error paths to properly use
ERR_PTR and IS_ERR (fixes: 3.19-rc6 "stable" commit 9b1cc9f251)
- fix DM thin-provisioning to disallow userspace from sending
messages to the thin-pool if the pool is in READ_ONLY or FAIL mode
since no metadata changes are allowed in these modes"
* tag 'dm-3.19-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm thin: don't allow messages to be sent to a pool target in READ_ONLY or FAIL mode
dm cache: fix missing ERR_PTR returns and handling
Highlights include:
- Stable fix for a NFSv4.1 Oops on mount
- Stable fix for an O_DIRECT deadlock condition
- Fix an issue with submounted volumes and fake duplicate inode numbers
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=eGYe
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-3.19-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
"Highlights include:
- Stable fix for a NFSv4.1 Oops on mount
- Stable fix for an O_DIRECT deadlock condition
- Fix an issue with submounted volumes and fake duplicate inode
numbers"
* tag 'nfs-for-3.19-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS: Fix use of nfs_attr_use_mounted_on_fileid()
NFSv4.1: Fix an Oops in nfs41_walk_client_list
nfs: fix dio deadlock when O_DIRECT flag is flipped
Pull Ceph fixes from Sage Weil:
"These paches from Ilya finally squash a race condition with layered
images that he's been chasing for a while"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
rbd: drop parent_ref in rbd_dev_unprobe() unconditionally
rbd: fix rbd_dev_parent_get() when parent_overlap == 0
When handling a fault in stage-2, we need to resync I$ and D$, just
to be sure we don't leave any old cache line behind.
That's very good, except that we do so using the *user* address.
Under heavy load (swapping like crazy), we may end up in a situation
where the page gets mapped in stage-2 while being unmapped from
userspace by another CPU.
At that point, the DC/IC instructions can generate a fault, which
we handle with kvm->mmu_lock held. The box quickly deadlocks, user
is unhappy.
Instead, perform this invalidation through the kernel mapping,
which is guaranteed to be present. The box is much happier, and so
am I.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Let's assume a guest has created an uncached mapping, and written
to that page. Let's also assume that the host uses a cache-coherent
IO subsystem. Let's finally assume that the host is under memory
pressure and starts to swap things out.
Before this "uncached" page is evicted, we need to make sure
we invalidate potential speculated, clean cache lines that are
sitting there, or the IO subsystem is going to swap out the
cached view, loosing the data that has been written directly
into memory.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Trying to emulate the behaviour of set/way cache ops is fairly
pointless, as there are too many ways we can end-up missing stuff.
Also, there is some system caches out there that simply ignore
set/way operations.
So instead of trying to implement them, let's convert it to VA ops,
and use them as a way to re-enable the trapping of VM ops. That way,
we can detect the point when the MMU/caches are turned off, and do
a full VM flush (which is what the guest was trying to do anyway).
This allows a 32bit zImage to boot on the APM thingy, and will
probably help bootloaders in general.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
This batch ended up being larger than wished, but there is nothing to
worry too much there. Most of commits are for ASoC, a compress NULL
dereference fix, a fix for probe error handling, and the rest are
device-specific fixes. In addition, we have a fix for a long-standing
but of seq-dummy driver, which just cuts off the buggy part in the
end.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=kBZk
-----END PGP SIGNATURE-----
Merge tag 'sound-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This batch ended up being larger than wished, but there is nothing to
worry too much there.
Most of commits are for ASoC, a compress NULL dereference fix, a fix
for probe error handling, and the rest are device-specific fixes. In
addition, we have a fix for a long-standing but of seq-dummy driver,
which just cuts off the buggy part in the end"
* tag 'sound-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: seq-dummy: remove deadlock-causing events on close
ASoC: omap-mcbsp: Correct CBM_CFS dai format configuration
ASoC: soc-compress.c: fix NULL dereference
ASoC: rt286: set the same format for dac and adc
ASoC: wm8904: fix runtime warning
ASoC: simple-card: Fix crash in asoc_simple_card_unref()
ASoC: fsl: imx-wm8962: Set the card owner field
ASoC: pcm512x: Fix DSP program selection
ASoC: rt5677: Modify the behavior that updates the PLL parameter.
ASoC: fsl_ssi: Fix irq error check
ASoC: rockchip: i2s: applys rate symmetry for CPU DAI
ASoC: Intel: Add NULL checks for the stream pointer
ASoC: wm8960: Fix capture sample rate from 11250 to 11025
ASoC: adi: Add missing return statement.
ASoC: Intel: Don't change offset of block allocator during fixed allocate
ASoC: ts3a227e: Check and report jack status at probe
ASoC: fsl_esai: Fix incorrect xDC field width of xCCR registers
The AT91 gpio controller would miss wakeup events, this
single fix make it work properly.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=Zosi
-----END PGP SIGNATURE-----
Merge tag 'pinctrl-v3.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull final pin control fix from Linus Walleij:
"A late pin control fix for the v3.19 series: The AT91 gpio controller
would miss wakeup events, this single fix make it work properly"
[ "Final"? Yeah, I'll believe that once I've actually released 3.19 ;) - Linus ]
* tag 'pinctrl-v3.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: at91: allow to have disabled gpio bank
The stack guard page error case has long incorrectly caused a SIGBUS
rather than a SIGSEGV, but nobody actually noticed until commit
fee7e49d45 ("mm: propagate error from stack expansion even for guard
page") because that error case was never actually triggered in any
normal situations.
Now that we actually report the error, people noticed the wrong signal
that resulted. So far, only the test suite of libsigsegv seems to have
actually cared, but there are real applications that use libsigsegv, so
let's not wait for any of those to break.
Reported-and-tested-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Jan Engelhardt <jengelh@inai.de>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> # "s390 still compiles and boots"
Cc: linux-arch@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 4bb25789ed ("arm: dma-mapping: plumb our iommu mapping ops
into arch_setup_dma_ops") moved the setting of the DMA operations from
arm_iommu_attach_device() to arch_setup_dma_ops() where the DMA
operations to be used are selected based on whether the device is
connected to an IOMMU. However, the IOMMU detection scheme requires the
IOMMU driver to be ported to the new IOMMU of_xlate API. As no driver
has been ported yet, this effectively breaks all IOMMU ARM users that
depend on the IOMMU being handled transparently by the DMA mapping API.
Fix this by restoring the setting of DMA IOMMU ops in
arm_iommu_attach_device() and splitting the rest of the function into a
new internal __arm_iommu_attach_device() function, called by
arch_setup_dma_ops().
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
The core VM already knows about VM_FAULT_SIGBUS, but cannot return a
"you should SIGSEGV" error, because the SIGSEGV case was generally
handled by the caller - usually the architecture fault handler.
That results in lots of duplication - all the architecture fault
handlers end up doing very similar "look up vma, check permissions, do
retries etc" - but it generally works. However, there are cases where
the VM actually wants to SIGSEGV, and applications _expect_ SIGSEGV.
In particular, when accessing the stack guard page, libsigsegv expects a
SIGSEGV. And it usually got one, because the stack growth is handled by
that duplicated architecture fault handler.
However, when the generic VM layer started propagating the error return
from the stack expansion in commit fee7e49d45 ("mm: propagate error
from stack expansion even for guard page"), that now exposed the
existing VM_FAULT_SIGBUS result to user space. And user space really
expected SIGSEGV, not SIGBUS.
To fix that case, we need to add a VM_FAULT_SIGSEGV, and teach all those
duplicate architecture fault handlers about it. They all already have
the code to handle SIGSEGV, so it's about just tying that new return
value to the existing code, but it's all a bit annoying.
This is the mindless minimal patch to do this. A more extensive patch
would be to try to gather up the mostly shared fault handling logic into
one generic helper routine, and long-term we really should do that
cleanup.
Just from this patch, you can generally see that most architectures just
copied (directly or indirectly) the old x86 way of doing things, but in
the meantime that original x86 model has been improved to hold the VM
semaphore for shorter times etc and to handle VM_FAULT_RETRY and other
"newer" things, so it would be a good idea to bring all those
improvements to the generic case and teach other architectures about
them too.
Reported-and-tested-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Jan Engelhardt <jengelh@inai.de>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> # "s390 still compiles and boots"
Cc: linux-arch@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
As of commit 9a1091ef00 ("irqchip: gic: Support hierarchy irq
domain."), the Lager legacy board support is known to be broken.
The IRQ numbers of the GIC are now virtual, and no longer match the
hardcoded hardware IRQ numbers in the legacy platform board code.
To fix this issue specific to non-multiplatform r8a7790 and Lager:
1) Instantiate the GIC from platform board code and also
2) Skip over the DT arch timer as well as
3) Force delay setup based on DT CPU frequency
With these 3 fixes in place interrupts on Lager are now unbroken.
Partially based on legacy GIC fix by Geert Uytterhoeven, thanks to
him for the initial work.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
As of commit 9a1091ef00 ("irqchip: gic: Support hierarchy irq
domain."), the APE6EVM legacy board support is known to be broken.
The IRQ numbers of the GIC are now virtual, and no longer match the
hardcoded hardware IRQ numbers in the legacy platform board code.
To fix this issue specific to non-muliplatform r8a73a4 and APE6EVM:
1) Instantiate the GIC from platform board code and also
2) Skip over the DT arch timer as well as
3) Force delay setup based on DT CPU frequency
With these 3 fixes in place interrupts on APE6EVM are now unbroken.
Partially based on legacy GIC fix by Geert Uytterhoeven, thanks to
him for the initial work.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
375/38x. Only switch the PL310 to I/O coherent mode if I/O coherency
is enabled.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=qzYQ
-----END PGP SIGNATURE-----
Merge tag 'mvebu-fixes-3.19-6' of git://git.infradead.org/linux-mvebu into fixes
Merge "mvebu-fixes-6" from Andrew Lunn:
The previous fix for Armada XP, disabling I/O coherency, broke Armada
375/38x. Only switch the PL310 to I/O coherent mode if I/O coherency
is enabled.
* tag 'mvebu-fixes-3.19-6' of git://git.infradead.org/linux-mvebu:
ARM: mvebu: don't set the PL310 in I/O coherency mode when I/O coherency is disabled
Signed-off-by: Olof Johansson <olof@lixom.net>
Since commit f2c3c67f00 (merge commit that adds commit "ARM: mvebu:
completely disable hardware I/O coherency"), we disable I/O coherency
on Armada EBU platforms.
However, we continue to initialize the coherency fabric, because this
coherency fabric is needed on Armada XP for inter-CPU
coherency. Unfortunately, due to this, we also continued to execute
the coherency fabric initialization code for Armada 375/38x, which
switched the PL310 into I/O coherent mode. This has the effect of
disabling the outer cache sync operation: this is needed when I/O
coherency is enabled to work around a PCIe/L2 deadlock. But obviously,
when I/O coherency is disabled, having the outer cache sync operation
is crucial.
Therefore, this commit fixes the armada_375_380_coherency_init() so
that the PL310 is switched to I/O coherent mode only if I/O coherency
is enabled.
Without this fix, all devices using DMA are broken on Armada 375/38x.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Cc: <stable@vger.kernel.org> # v3.8+
You can't modify the metadata in these modes. It's better to fail these
messages immediately than let the block-manager deny write locks on
metadata blocks. Otherwise these failed metadata changes will trigger
'needs_check' to get set in the metadata superblock -- requiring repair
using the thin_check utility.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
Commit 9b1cc9f251 ("dm cache: share cache-metadata object across
inactive and active DM tables") mistakenly ignored the use of ERR_PTR
returns. Restore missing IS_ERR checks and ERR_PTR returns where
appropriate.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
User visible:
- Fix probing at function return (Namhyumg Kim)
Developer stuff:
- Symbol processing changes necessary for fixing support for
kretprobes in 'perf probe' (Namhyung Kim, Arnaldo Carvalho de Melo)
- Annotation memory leaks and instruction parsing fixes (Rabin Vincent)
- Fix perl build on ARM64 (Wang Nam)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJUv7uZAAoJEBpxZoYYoA71FocIAKPHkpS3qr1xS1aP3KKjS/0m
PGwsZmx6M92HPB1dHDgyZKmcdd6LL+QNwqXeXinwYhgnH62uvZCRWURlcGYcD/NU
cPTQJzmxDyXNHJGRPyDcYRZS9CFp5A7ccmpmcW7Zw6FgR+JLOcW0A7WkkmetxlYo
OyvbmTuWR+jT/PhfLRvriNPo2gbY7IV3xstJW7lP4R6VXcvpA3RJRKckQRhi9FBR
FcJzyITcaGKVe7f3sY3SAOrBB/bvmIK2EHk9qcMrwlR75FHVrWeuD7J/WiVCmGtG
VUEfl/EmGiBIwPNl268GoImzqJcAVY2EQmnHsSEQwVIRuJtjFc07jGH+Tg2XaUs=
=XNsc
-----END PGP SIGNATURE-----
Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
" User visible fixes:
- Fix probing at function return (Namhyumg Kim)
Developer visible fixes:
- Symbol processing changes necessary for fixing support for
kretprobes in 'perf probe' (Namhyung Kim, Arnaldo Carvalho de Melo)
- Annotation memory leaks and instruction parsing fixes (Rabin Vincent)
- Fix perl build on ARM64 (Wang Nam)
"
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
of this is an IST rework. When an IST exception interrupts user
space, we will handle it on the per-thread kernel stack instead of
on the IST stack. This sounds messy, but it actually simplifies the
IST entry/exit code, because it eliminates some ugly games we used
to play in order to handle rescheduling, signal delivery, etc on the
way out of an IST exception.
The IST rework introduces proper context tracking to IST exception
handlers. I haven't seen any bug reports, but the old code could
have incorrectly treated an IST exception handler as an RCU extended
quiescent state.
The memory failure change (included in this pull request with
Borislav and Tony's permission) eliminates a bunch of code that
is no longer needed now that user memory failure handlers are
called in process context.
Finally, this includes a few on Denys' uncontroversial and Obviously
Correct (tm) cleanups.
The IST and memory failure changes have been in -next for a while.
LKML references:
IST rework:
http://lkml.kernel.org/r/cover.1416604491.git.luto@amacapital.net
Memory failure change:
http://lkml.kernel.org/r/54ab2ffa301102cd6e@agluck-desk.sc.intel.com
Denys' cleanups:
http://lkml.kernel.org/r/1420927210-19738-1-git-send-email-dvlasenk@redhat.com
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJUtvkFAAoJEK9N98ZeDfrkcfsIAJxZ0UBUCEDvulbqgk/iPGOa
fIpKLMowS7CpKtw6Wdc/YvAIkeHXWm1vU44Hj0TrjSrXCgVF8yCngs/xlXtOjoa1
dosXQqgqVJJ+hyui7chAEWyalLW7bEO8raq/6snhiMrhiuEkVKpEr7Fer4FVVCZL
4VALmNQQsbV+Qq4pXIhuagZC0Nt/XKi/+/cKvhS4p//q1F/TbHTz0FpDUrh0jPMh
18WFy0jWgxdkMRnSp/wJhekvdXX6PwUy5BdES9fjw8LQJZxxFpqN3Fe1kgfyzV0k
yuvEHw1hPt2aBGj3q69wQvDVyyn4OqMpRDBhk4S+GJYmVh7mFyFMN4BDMEy/EY8=
=LXVl
-----END PGP SIGNATURE-----
Merge tag 'pr-20150114-x86-entry' of git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux into x86/asm
Pull x86/entry enhancements from Andy Lutomirski:
" This is my accumulated x86 entry work, part 1, for 3.20. The meat
of this is an IST rework. When an IST exception interrupts user
space, we will handle it on the per-thread kernel stack instead of
on the IST stack. This sounds messy, but it actually simplifies the
IST entry/exit code, because it eliminates some ugly games we used
to play in order to handle rescheduling, signal delivery, etc on the
way out of an IST exception.
The IST rework introduces proper context tracking to IST exception
handlers. I haven't seen any bug reports, but the old code could
have incorrectly treated an IST exception handler as an RCU extended
quiescent state.
The memory failure change (included in this pull request with
Borislav and Tony's permission) eliminates a bunch of code that
is no longer needed now that user memory failure handlers are
called in process context.
Finally, this includes a few on Denys' uncontroversial and Obviously
Correct (tm) cleanups.
The IST and memory failure changes have been in -next for a while.
LKML references:
IST rework:
http://lkml.kernel.org/r/cover.1416604491.git.luto@amacapital.net
Memory failure change:
http://lkml.kernel.org/r/54ab2ffa301102cd6e@agluck-desk.sc.intel.com
Denys' cleanups:
http://lkml.kernel.org/r/1420927210-19738-1-git-send-email-dvlasenk@redhat.com
"
This tree semantically depends on and is based on the following RCU commit:
734d168013 ("rcu: Make rcu_nmi_enter() handle nesting")
... and for that reason won't be pushed upstream before the RCU bits hit Linus's tree.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This effectively reverts the last hunk of 392a9dad7e ("rbd: detect
when clone image is flattened").
The problem with parent_overlap != 0 condition is that it's possible
and completely valid to have an image with parent_overlap == 0 whose
parent state needs to be cleaned up on unmap. The next commit, which
drops the "clone image now standalone" logic, opens up another window
of opportunity to hit this, but even without it
# cat parent-ref.sh
#!/bin/bash
rbd create --image-format 2 --size 1 foo
rbd snap create foo@snap
rbd snap protect foo@snap
rbd clone foo@snap bar
rbd resize --allow-shrink --size 0 bar
rbd resize --size 1 bar
DEV=$(rbd map bar)
rbd unmap $DEV
leaves rbd_device/rbd_spec/etc and rbd_client along with ceph_client
hanging around.
My thinking behind calling rbd_dev_parent_put() unconditionally is that
there shouldn't be any requests in flight at that point in time as we
are deep into unmap sequence. Hence, even if rbd_dev_unparent() caused
by flatten is delayed by in-flight requests, it will have finished by
the time we reach rbd_dev_unprobe() caused by unmap, thus turning
unconditional rbd_dev_parent_put() into a no-op.
Fixes: http://tracker.ceph.com/issues/10352
Cc: stable@vger.kernel.org # 3.11+
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Josh Durgin <jdurgin@redhat.com>
Reviewed-by: Alex Elder <elder@linaro.org>
The comment for rbd_dev_parent_get() said
* We must get the reference before checking for the overlap to
* coordinate properly with zeroing the parent overlap in
* rbd_dev_v2_parent_info() when an image gets flattened. We
* drop it again if there is no overlap.
but the "drop it again if there is no overlap" part was missing from
the implementation. This lead to absurd parent_ref values for images
with parent_overlap == 0, as parent_ref was incremented for each
img_request and virtually never decremented.
Fix this by leveraging the fact that refresh path calls
rbd_dev_v2_parent_info() under header_rwsem and use it for read in
rbd_dev_parent_get(), instead of messing around with atomics. Get rid
of barriers in rbd_dev_v2_parent_info() while at it - I don't see what
they'd pair with now and I suspect we are in a pretty miserable
situation as far as proper locking goes regardless.
Cc: stable@vger.kernel.org # 3.11+
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Josh Durgin <jdurgin@redhat.com>
Reviewed-by: Alex Elder <elder@linaro.org>
The fix from 9fc81d8742 ("perf: Fix events installation during
moving group") was incomplete in that it failed to recognise that
creating a group with events for different CPUs is semantically
broken -- they cannot be co-scheduled.
Furthermore, it leads to real breakage where, when we create an event
for CPU Y and then migrate it to form a group on CPU X, the code gets
confused where the counter is programmed -- triggered in practice
as well by me via the perf fuzzer.
Fix this by tightening the rules for creating groups. Only allow
grouping of counters that can be co-scheduled in the same context.
This means for the same task and/or the same cpu.
Fixes: 9fc81d8742 ("perf: Fix events installation during moving group")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20150123125834.090683288@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This patch fixes a systematic crash in rapl_scale()
due to an invalid pointer.
The bug was introduced by commit:
89cbc76768 ("x86: Replace __get_cpu_var uses")
The fix is simple. Just put the parenthesis where it needs
to be, i.e., around rapl_pmu. To my surprise, the compiler
was not complaining about passing an integer instead of a
pointer.
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Tested-by: Vince Weaver <vincent.weaver@maine.edu>
Fixes: 89cbc76768 ("x86: Replace __get_cpu_var uses")
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: cl@linux.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20150122203834.GA10228@thinkpad
Signed-off-by: Ingo Molnar <mingo@kernel.org>
There were some issues about the uncore driver tried to access
non-existing boxes, which caused boot crashes. These issues have
been all fixed. But we should avoid boot failures if that ever
happens again.
This patch intends to prevent this kind of potential issues.
It moves uncore_box_init out of driver initialization. The box
will be initialized when it's first enabled.
Signed-off-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1421729665-5912-1-git-send-email-kan.liang@intel.com
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Currently ->get_dqblk() and ->set_dqblk() use struct fs_disk_quota which
tracks space limits and usage in 512-byte blocks. However VFS quotas
track usage in bytes (as some filesystems require that) and we need to
somehow pass this information. Upto now it wasn't a problem because we
didn't do any unit conversion (thus VFS quota routines happily stuck
number of bytes into d_bcount field of struct fd_disk_quota). Only if
you tried to use Q_XGETQUOTA or Q_XSETQLIM for VFS quotas (or Q_GETQUOTA
/ Q_SETQUOTA for XFS quotas), you got bogus results. Hardly anyone
tried this but reportedly some Samba users hit the problem in practice.
So when we want interfaces compatible we need to fix this.
We bite the bullet and define another quota structure used for passing
information from/to ->get_dqblk()/->set_dqblk. It's somewhat sad we have
to have more conversion routines in fs/quota/quota.c and another copying
of quota structure slows down getting of quota information by about 2%
but it seems cleaner than overloading e.g. units of d_bcount to bytes.
CC: stable@vger.kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
