Hello people and welcome to this edition of kwn!
-We start with Kent Overstreet and his announcement of bcache vers. 12 :
bcache, n.: a cache for arbitrary block devices that uses an SSD It's probably past time I started poking people to see about getting this stuff in. It's synced up with mainline, the documentation is for once relatively up to date, and it looks just about production ready. Suggestions are more than welcome on how to make it easier to review - it's entirely too much code, I know (near 10k lines now). I'll be emailing the patches that touch other parts of the kernel separately. Short overview: Bcache does both writethrough and writeback caching. It presents itself as a new block device, a bit like say md. You can cache an arbitrary number of block devices with a single cache device, and attach and detach things at runtime - it's quite flexible. It's very fast. It uses a b+ tree for the index, along with a journal to coalesce index updates, and a bunch of other cool tricks like auxiliary binary search trees with software floating point keys to avoid a bunch of random memory accesses when doing binary searches in the btree. It does over 50k iops doing 4k random /writes/ without breaking a sweat, and would do many times that if I had faster hardware. It (configurably) tracks and skips sequential IO, so as to efficiently cache random IO. It's got more cool features than I can remember at this point. It's resilient, handling IO errors from the SSD when possible up to a configurable threshhold, then detaches the cache from the backing device even while you're still using it. The code is up at git://evilpiepirate.org/~kent/linux-bcache.git git://evilpiepirate.org/~kent/bcache-tools.git The wiki is woefully out of date, but that might change one day: http://bcache.evilpiepirate.org
-Neil Brown of SUSE has a few minor md updates for 3.1, Jonas Bonn
has OpenRISC fixes for 3.1 and Mauro Carvalho Chehab has media fixes :
Dan Carpenter (1):
[media] pwc: precedence bug in pwc_init_controls()
Florian Mickler (1):
[media] vp7045: fix buffer setup
Jarod Wilson (1):
[media] nuvoton-cir: simplify raw IR sample handling
Jean-François Moine (2):
[media] gspca - ov519: Fix LED inversion of some ov519 webcams
[media] gspca - sonixj: Fix the darkness of sensor om6802 in 320x240
Jesper Juhl (1):
[media] [Resend] viacam: Don't explode if pci_find_bus() returns NULL
Kamil Debski (1):
[media] v4l2: Fix documentation of the codec device controls
Luiz Carlos Ramos (1):
[media] gspca - sonixj: Fix wrong register mask for sensor om6802
-Arnd Bergmann issues arm-soc fixes for 3.1 :
I've moved a copy of the arm-soc tree to git.linaro.org for now. Since
g.k.o contains to be unavailable, that seemed to be the most reliable
alternative for me.
The fixes for 3.1 that have come in during this time are for four platforms:
cns3xxx, davinci, omap2+, and prima2. I have a large set of build fixes
that I found myself during randconfig builds, but most of these have been
around forever, so I'm waiting for the merge window with those. I'm trying
to feed the actual build regressions through the individual maintainers,
so a few of those might be still be coming.
[snip...]
Anton Vorontsov (1):
ARM: cns3xxx: Fix newly introduced warnings in the PCIe code
Arnd Bergmann (2):
Merge branches 'cns3xxx/fixes', 'omap/fixes' and 'davinci/fixes' into fixes
Merge branch 'sirf/fixes' into fixes
Jamie Iles (1):
ARM: CSR: add missing sentinels to of_device_id tables
Linus Walleij (1):
ARM: davinci: fix cache flush build error
Paul Walmsley (5):
OMAP4: clock: re-enable previous clockdomain enable/disable sequence
OMAP4: clock: fix compile warning
OMAP3: clock: indicate that gpt12_fck and wdt1_fck are in the WKUP clockdomain
OMAP2430: hwmod: musb: add missing terminator to omap2430_usbhsotg_addrs[]
Merge branches 'non_hwmod_compliant_fix_3.1rc', 'omap3_clock_fixes_3.1rc', 'omap4_clock_fixes_3.1rc', 'missing_2430_musb_adds_terminator_fix_3.1rc' and 'pwrdm_clkdm_fixes_3.1rc' into prcm-fixes-a-3.1rc
Rajashekhara, Sudhakar (1):
ARM: davinci: da850 EVM: read mac address from SPI flash
Rajendra Nayak (1):
OMAP: powerdomains: Make all powerdomain target states as ON at init
Santosh Shilimkar (1):
OMAP: clockdomain: Wait for powerdomain to be ON when using clockdomain force wakeup
Sergei Shtylyov (1):
ARM: davinci: correct MDSTAT_STATE_MASK
Tommy Lin (1):
ARM: cns3xxx: Fix compile error caused by hardware.h removed
-Dave Airlie has drm fixes including a major nouveau regression fix, Jeremy Fitzhardinge
has a fix related to xen (“When starting a PV kernel under Xen with full boot-time
trace testing enabled, it crashes due to infinite recursion. In principle it could
happen at other times too (when just using preempt tracing perhaps?).
This fixes it.
BTW, I think this same problem also affects KVM.
Erm, I’m not sure how to authenticate this github as being really from
me; I’m signing the mail with my long-standing pgp key in the hope that
it helps… Also, the patch is self-evident.”), Paul E. McKenney
announces a temp location for the rcu tree until the kernel.org
issue is solved : https://github.com/paulmckrcu/linux and
Len Brown announces acpi patches for -rc6; it’s also temporarily
hosted on github – https://github.com/lenb/linux.git .
-Pekka Enberg announces the temp location of slab.git, until the
kernel.org issue is solved : you can find it here :
git://github.com/penberg/linux.git for-next .
-John Stultz updates alarmtimers for 3.2, which can be found
at git://git.linaro.org/people/jstultz/linux.git fortglx/3.2/tip/timers/alarmtimers :
John Stultz (8):
alarmtimers: Change alarmtimer functions to return alarmtimer_restart values
alarmtimers: Push rearming peroidic timers down into alamrtimer handler
alarmtimers: Add alarm_forward functionality
alarmtimers: Remove interval cap limit hack
alarmtimers: Remove period from alarm structure
alarmtimers: Add more refined alarm state tracking
alarmtimers: Add try_to_cancel functionality
alarmtimers: Rework RTC device selection using class interface
-Linus Torvalds announces 3.1-rc6 :
[ Heh. Somewhat delayed, but I literally didn't notice that all my
outgoing email bounced for the last couple of days, so here it is
again. Originally *meant* to be sent on Monday, just apparently never
got anywhere. So when it says "I should have done this yesterday", it
actually *means* Sunday ;^]
So I should have done this yesterday, but I was distracted. So here it
is, a day late:
git://github.com/torvalds/linux.git
with just over a hundred commits. It's been fairly quiet.
Some arm and openrisc updates, various small driver fixes (the drm
nvidia fixes might be the ones most noticeable to people), and some
fuse, 9p and btrfs updates for filesystems.
Nothing really stands out. Have at it, and let us know of any
outstanding regressions,
Linus
---
Alex Deucher (1):
drm/radeon/kms: fix DP detect and EDID fetch for DP bridges
Andrey Vagin (1):
x86, perf: Check that current->mm is alive before getting user callchain
Aneesh Kumar K.V (5):
fs/9p: Add fid before dentry instantiation
fs/9p: Don't update file type when updating file attributes
net/9p: Fix kernel crash with msize 512K
fs/9p: Add OS dependent open flags in 9p protocol
fs/9p: Always ask new inode in lookup for cache mode disabled
Anton Vorontsov (1):
ARM: cns3xxx: Fix newly introduced warnings in the PCIe code
Artem Bityutskiy (1):
UBI: do not link debug messages when debugging is disabled
Axel Lin (2):
rtc: ep93xx: Fix 'rtc' may be used uninitialized warning
i2c-pxa2xx: return proper error code in ce4100_i2c_probe error paths
Bart Van Assche (1):
backlight: Declare backlight_types[] const
Ben Skeggs (1):
drm/nouveau: fix oops on pre-semaphore hardware
Chase Douglas (1):
HID: magicmouse: Set resolution of touch surfaces
Clemens Werther (1):
HID: add support for HuiJia USB Gamepad connector
Dan Carpenter (1):
[media] pwc: precedence bug in pwc_init_controls()
David Herrmann (2):
HID: wacom: Fix error path of power-supply initialization
HID: wacom: Unregister sysfs attributes on remove
David Sterba (1):
btrfs: xattr: fix attribute removal
David Vrabel (1):
xen: use maximum reservation to limit amount of usable RAM
Doug Anderson (1):
i2c-tegra: fix possible race condition after tx
Duncan Sands (1):
KVM: Fix instruction size issue in pvclock scaling
Emil Velikov (2):
drm/nv50/crtc: Bail out if FB is not bound to crtc
drm/nv04/crtc: Bail out if FB is not bound to crtc
Eric B Munson (1):
perf_event: Fix broken calc_timer_values()
Florian Mickler (1):
[media] vp7045: fix buffer setup
Girish K S (1):
mmc: sdhci-s3c: Fix mmc card I/O problem
Guenter Roeck (2):
hwmon: (max16065) Fix current calculation
hwmon: (max16065) Add chip access warning to documentation
Igor Mammedov (1):
xen: x86_32: do not enable iterrupts when returning from
exception in interrupt context
Ilkka Koskinen (1):
rtc: rtc-twl: Switch to using threaded irq
Jamie Iles (1):
ARM: CSR: add missing sentinels to of_device_id tables
Janusz Krzysztofik (1):
ARM: 7088/1: entry: fix wrong parameter name used in do_thumb_abort
Jarod Wilson (1):
[media] nuvoton-cir: simplify raw IR sample handling
Jean Delvare (1):
hwmon: (ucd9000/ucd9200) Optimize array walk
Jean-François Moine (2):
[media] gspca - ov519: Fix LED inversion of some ov519 webcams
[media] gspca - sonixj: Fix the darkness of sensor om6802 in 320x240
Jesper Juhl (1):
[media] [Resend] viacam: Don't explode if pci_find_bus() returns NULL
Jim Garlick (1):
fs/9p: Use protocol-defined value for lock/getlock 'type' field.
Jiri Kosina (1):
HID: magicmouse: ignore 'ivalid report id' while switching modes, v2
Joerg Roedel (2):
iommu/amd: Make sure iommu->need_sync contains correct value
iommu/amd: Don't take domain->lock recursivly
John Bonesio (1):
i2c-tegra: Add of_match_table
John Stultz (4):
alarmtimers: Avoid possible null pointer traversal
alarmtimers: Memset itimerspec passed into alarm_timer_get
alarmtimers: Avoid possible denial of service with high freq
periodic timers
rtc: Fix RTC PIE frequency limit
Jon Mason (1):
PCI: Remove MRRS modification from MPS setting code
Jonas Bonn (2):
openrisc: don't use pt_regs in struct sigcontext
Add missing DMA ops
Josef Bacik (1):
Btrfs: skip locking if searching the commit root in csum lookup
Kamil Debski (1):
[media] v4l2: Fix documentation of the codec device controls
Kevin Hilman (1):
OMAP: omap_device: fix !CONFIG_SUSPEND case in _noirq handlers
Konrad Rzeszutek Wilk (1):
xen/smp: Warn user why they keel over - nosmp or noapic and what
to use instead.
Li Zefan (2):
Btrfs: calc file extent num_bytes correctly in file clone
Btrfs: add dummy extent if dst offset excceeds file end in
Lin Ming (1):
drm: Remove duplicate "return" statement
Linus Torvalds (1):
Linux 3.1-rc6
Linus Walleij (3):
ARM: 7081/1: mach-integrator: fix the clocksource
ARM: 7080/1: l2x0: make sure I&D are not locked down on init
ARM: davinci: fix cache flush build error
Liu Bo (3):
Btrfs: fix an oops when deleting snapshots
Btrfs: reset to appropriate block rsv after orphan operations
Btrfs: fix misuse of trans block rsv
Luiz Carlos Ramos (1):
[media] gspca - sonixj: Fix wrong register mask for sensor om6802
Marcin Slusarz (2):
drm/nouveau: properly handle allocation failure in nouveau_sgdma_populate
drm/nouveau: fix nv04_sgdma_bind on non-"4kB pages" archs
Mark Brown (1):
regmap: Remove bitrotted module_put()s
Mark Rutland (1):
ARM: 7067/1: mm: keep significant bits in pfn_valid
Mathieu Desnoyers (1):
ioctl: register LTTng ioctl
Miao Xie (3):
Btrfs: fix unclosed transaction handle in btrfs_cont_expand
Btrfs: fix the file extent gap when doing direct IO
Btrfs: fix wrong nbytes information of the inode
Michal Marek (1):
UBIFS: not build debug messages with CONFIG_UBIFS_FS_DEBUG disabled
Mika Westerberg (3):
mmc: rename mmc_host_clk_{ungate|gate} to mmc_host_clk_{hold|release}
mmc: core: prevent aggressive clock gating racing with ios updates
mmc: core: use non-reentrant workqueue for clock gating
Mike Rapoport (1):
i2c-tegra: add I2C_FUNC_SMBUS_EMUL
Mike Waychison (1):
rtc: Initialized rtc_time->tm_isdst
Miklos Szeredi (3):
vfs: automount should ignore LOOKUP_FOLLOW
fuse: fix flock breakage
fuse: fix memory leak
NeilBrown (4):
Avoid dereferencing a 'request_queue' after last close.
md/raid10: unify handling of write completion.
md/raid1,10: Remove use-after-free bug in make_request.
md: Fix handling for devices from 2TB to 4TB in 0.90 metadata.
Noah Watkins (1):
ceph: fix memory leak
Paul Walmsley (4):
OMAP4: clock: re-enable previous clockdomain enable/disable sequence
OMAP4: clock: fix compile warning
OMAP3: clock: indicate that gpt12_fck and wdt1_fck are in the
WKUP clockdomain
OMAP2430: hwmod: musb: add missing terminator to omap2430_usbhsotg_addrs[]
Per Forlin (4):
dmaengine/ste_dma40: add missing kernel doc for pending_queue
dmaengine/ste_dma40: remove duplicate call to d40_pool_lli_free().
dmaengine/ste_dma40: fix Oops due to double free of client descriptor
dmaengine/ste_dma40: fix memory leak due to prepared descriptors
Rajashekhara, Sudhakar (1):
ARM: davinci: da850 EVM: read mac address from SPI flash
Rajendra Nayak (1):
OMAP: powerdomains: Make all powerdomain target states as ON at init
Randy Dunlap (3):
wireless: fix kernel-doc warning in net/cfg80211.h
regulator: fix kernel-doc warning in consumer.h
scsi: qla4xxx driver depends on NET
Russell King (1):
NET: am79c961: fix race in link status code
Sage Weil (3):
libceph: fix msgpool
ceph: fix encoding of ino only (not relative) paths
libceph: fix leak of osd structs during shutdown
Santosh Shilimkar (1):
OMAP: clockdomain: Wait for powerdomain to be ON when using
clockdomain force wakeup
Sebastian Reichel (1):
rtc: rtc-twl: Remove lockdep related local_irq_enable()
Sergei Shtylyov (1):
ARM: davinci: correct MDSTAT_STATE_MASK
Sergei Trofimovich (1):
btrfs: fix warning in iput for bad-inode
Shawn Guo (1):
mmc: sdhci-esdhc-imx: add missing inclusion of linux/module.h
Shyam Iyer (1):
Fix pointer dereference before call to pcie_bus_configure_settings
Simon Horman (1):
mmc: sdhi: initialise mmc_data->flags before use
Stephane Eranian (1):
perf events: Fix slow and broken cgroup context switch code
Subhash Jadavani (1):
mmc: sd: UHS-I bus speed should be set last in UHS initialization
Thomas Gleixner (2):
sched: Separate the scheduler entry for preemption
sched: Move blk_schedule_flush_plug() out of __schedule()
Todd Poynor (1):
rtc: twl: Fix registration vs. init order
Tommy Lin (1):
ARM: cns3xxx: Fix compile error caused by hardware.h removed
WANG Cong (1):
sched: Fix a memory leak in __sdt_free()
-James Bottomley has scsi fixes for -rc6 :
Andrew Vasquez (1):
qla2xxx: Correct inadvertent loop state transitions during port-update handling.
Arun Easi (2):
qla2xxx: T10 DIF - Fix incorrect error reporting.
qla2xxx: T10 DIF - Handle uninitalized sectors.
Chad Dupuis (3):
qla2xxx: Update version number to 8.03.07.07-k.
qla2xxx: Double check for command completion if abort mailbox command fails.
qla2xxx: Fix qla24xx revision check while enabling interrupts.
Dan Williams (5):
isci: add version number
isci: fix event-get pointer increment
isci: dynamic interrupt coalescing
isci: fix 32-bit operation when CONFIG_HIGHMEM64G=n
isci: fix sata response handling
Dave Jiang (2):
isci: Adding documentation to API change and fixup sysfs registration
isci: Update MAINTAINERS entry for the isci driver
Eddie Wai (1):
bnx2i: Fixed the endian on TTT for NOP out transmission
Jeff Skirvin (1):
isci: Leave requests alone if already terminating.
Marcin Tomczak (1):
isci: change sas phy timeouts from 54us to 59us
Robert Love (1):
fcoe: Fix deadlock between fip's recv_work and rtnl
Saurav Kashyap (3):
qla2xxx: Set the task attributes after memsetting fcp cmnd.
qla2xxx: Save and restore irq in the response queue interrupt handler.
qla2xxx: Acquire hardware lock while manipulating dsd list.
Stephen M. Cameron (2):
hpsa: fix physical device lun and target numbering problem
hpsa: fix problem that OBDR devices are not detected
Vasu Dev (2):
libfc: block SCSI eh thread for blocked rports
libfc: fix fc_eh_host_reset
Yi Zou (1):
libfc: fix referencing to fc_fcp_pkt from the frame pointer via fr_fsp()
-Trond Myklebust has nfs-client fixes, John W. Linville updates wireless
(“Felix Fietkau (1):
ath9k_hw: fix calibration on 5 ghz
George (2):
rtlwifi: rtl8192su: Fix problem connecting to HT-enabled AP
rtlwifi: Fix problem when switching connections
Johannes Berg (3):
mac80211: fix missing sta_lock in __sta_info_destroy
iwlagn: fix stack corruption
iwlagn: fix command queue timeout
John W. Linville (1):
Merge branch ‘master’ of git://git.infradead.org/users/linville/wireless into for-davem
Mohammed Shafi Shajakhan (1):
ath9k: Fix kernel panic on unplugging the device
Rajkumar Manoharan (1):
ath9k_hw: Fix init mode register regression
Stanislaw Gruszka (1):
iwlegacy: fix BUG_ON(info->control.rates[0].idx < 0) "),
Takashi Iwai has sound updates for -rc7 and Dmitry Torokhov announces the
new location of the input tree : https://github.com/dtor/input .
-Konrad Rzeszutek Wilk has xen stable/bug fixes for -rc6 :
which has fixes in:
1). The E820 setup code (which we are planning to cleanup in 3.2/3.3 time
-frame as it is getting bigger and nastier).
2). Taking a spinlock while later calling the generic IRQ code which
uses a mutex - causing the "BUG: you took spinlock while sleeping."
Fortunately the fix is quite simple - s/spin/mutex/.
3). The Linux guest when it runs under HVM tries to enable as many PV
things as it can. One of them is the spinlocks - but sadly we are
doing it too late and end up with baremetal ticket spinlocks and
PV byte locks running at the same time. Hilarity ensues with the guest
locking up.. we will revisit this in 3.3 time-frame.
4). Lastly, we fix up the check for overflow and also add a WARN
just in case it happens.
-Have a great weekend everyone, see ya!
