Now that ext4 driver must be used to access ext3 filesystems, improve
the Kconfig help text to better explain that using ext4 driver to access
the filesystem is fully compatible with the old ext3 driver.
Acked-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jan Kara <jack@suse.com>
JBD layer wrote back data buffers without setting PageWriteback bit.
Thus standard mechanism for guaranteeing stable pages under IO did not
work. Since JBD is gone now and there is no other user of the
functionality, just remove it.
Acked-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jan Kara <jack@suse.cz>
The functionality of ext3 is fully supported by ext4 driver. Major
distributions (SUSE, RedHat) already use ext4 driver to handle ext3
filesystems for quite some time. There is some ugliness in mm resulting
from jbd cleaning buffers in a dirty page without cleaning page dirty
bit and also support for buffer bouncing in the block layer when stable
pages are required is there only because of jbd. So let's remove the
ext3 driver. This saves us some 28k lines of duplicated code.
Acked-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jan Kara <jack@suse.cz>
Documentation of journalling layer in
Documentation/DocBook/filesystems.tmpl speaks about JBD layer. Since
that is going away, update the documentation to speak about JBD2. Also
update the parts that have changed since someone last touched the
document and remove some parts which are just misleading and outdated.
Signed-off-by: Jan Kara <jack@suse.com>
dquot_initialize() can now return error. Handle it where possible
Slightly modified by Dave Kleikamp due to needed jfs_rename() error path
fix.
Signed-off-by: Jan Kara <jack@suse.com>
Reviewed-by: Dave Kleikamp <dave.kleikamp@oracle.com>
dquot_initialize() can now return error. Handle it where possible.
Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Jan Kara <jack@suse.com>
Currently when some error happened in ->acquire_dquot(), dqget() just
returned NULL. That was indistinguishable from a case when e.g. someone
run quotaoff and so was generally silently ignored. However
->acquire_dquot() can fail because of ENOSPC or EIO in which case user
should better know. So propagate error up from ->acquire_dquot properly.
Signed-off-by: Jan Kara <jack@suse.cz>
This reverts commit a2673b6e04.
Kinglong Mee reports a memory leak with that patch, and Jan Kara confirms:
"Thanks for report! You are right that my patch introduces a race
between fsnotify kthread and fsnotify_destroy_group() which can result
in leaking inotify event on group destruction.
I haven't yet decided whether the right fix is not to queue events for
dying notification group (as that is pointless anyway) or whether we
should just fix the original problem differently... Whenever I look
at fsnotify code mark handling I get lost in the maze of locks, lists,
and subtle differences between how different notification systems
handle notification marks :( I'll think about it over night"
and after thinking about it, Jan says:
"OK, I have looked into the code some more and I found another
relatively simple way of fixing the original oops. It will be IMHO
better than trying to fixup this issue which has more potential for
breakage. I'll ask Linus to revert the fsnotify fix he already merged
and send a new fix"
Reported-by: Kinglong Mee <kinglongmee@gmail.com>
Requested-by: Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Some dead defines dropped from the Samsung driver, was
targeted for -rc2 but got delayed
- Drop the strict mode from abx500, this was too strict
- Fix the R-Car sparse IRQs code to work as intended
- Fix the IRQ code for the pinctrl-single GPIO backend to not
enforce threaded IRQs
- Clear the latched events/IRQs for the Broadcom BCM2835
driver
- Fix up debugfs for the Freescale imx1 driver
- Fix a typo bug in the Schmitt Trigger setup in the LPC18xx
driver
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Merge tag 'pinctrl-v4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Here are some overly ripe pin control fixes for the v4.2 series.
They got delayed because of various crap commits and having to clean
and rinse the patch stack a few times. Now they are however looking
good.
- some dead defines dropped from the Samsung driver, was targeted for
-rc2 but got delayed
- drop the strict mode from abx500, this was too strict
- fix the R-Car sparse IRQs code to work as intended
- fix the IRQ code for the pinctrl-single GPIO backend to not enforce
threaded IRQs
- clear the latched events/IRQs for the Broadcom BCM2835 driver
- fix up debugfs for the Freescale imx1 driver
- fix a typo bug in the Schmitt Trigger setup in the LPC18xx driver"
* tag 'pinctrl-v4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: lpc18xx: fix schmitt trigger setup
Subject: pinctrl: imx1-core: Fix debug output in .pin_config_set callback
pinctrl: bcm2835: Clear the event latch register when disabling interrupts
pinctrl: single: ensure pcs irq will not be forced threaded
sh-pfc: fix sparse GPIOs for R-Car SoCs
pinctrl: abx500: remove strict mode
pinctrl: samsung: Remove old unused defines
Pull UDF fix from Jan Kara:
"A fix for UDF corruption when certain disk-format feature is enabled"
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
udf: Don't corrupt unalloc spacetable when writing it
function __get_dynamic_array_len() is broken. This only changes the
sample code, and I'm pushing this now instead of later because I don't
want others using the broken code as an example when using it for real.
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Merge tag 'trace-v4.2-rc2-fix2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing sample code fix from Steven Rostedt:
"He Kuang noticed that the sample code using the trace_event helper
function __get_dynamic_array_len() is broken.
This only changes the sample code, and I'm pushing this now instead of
later because I don't want others using the broken code as an example
when using it for real"
* tag 'trace-v4.2-rc2-fix2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix sample output of dynamic arrays
Pull s390 fix from Martin Schwidefsky:
"Fast path fix for the thread_struct breakage"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: adapt entry.S to the move of thread_struct
Pull AVR32 update from Hans-Christian Egtvedt.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
AVR32/time: Migrate to new 'set-state' interface
git commit 0c8c0f03e3
"x86/fpu, sched: Dynamically allocate 'struct fpu'"
moved the thread_struct to the end of the task_struct.
This causes some of the offsets used in entry.S to overflow their
instruction operand field. To fix this use aghi to create a
dedicated pointer for the thread_struct.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Migrate avr32 driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.
This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.
We want to call cpu_idle_poll_ctrl() in shutdown only if we were in
oneshot or resume state earlier. Create another variable to save this
information and check that in shutdown callback.
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
The param_val variable is what determines if schmitt
trigger is enabled on a pin or not. A typo here mean
that schmitt trigger was always enabled for standard
and i2c pins.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
imx1_pinconf_set assumes that the array of pins in struct
imx1_pinctrl_soc_info can be indexed by pin id to get the
pinctrl_pin_desc for a pin. This used to be correct up to commit
607af165c0 which removed some entries from the array and so made it
wrong to access the array by pin id.
The result of this bug is a wrong pin name in the output for small pin
ids and an oops for the bigger ones.
This patch is the result of a discussion that includes patches by Markus
Pargmann and Chris Ruehl.
Fixes: 607af165c0 ("pinctrl: i.MX27: Remove nonexistent pad definitions")
Cc: stable@vger.kernel.org
Reported-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
It's possible to hit a race condition if interrupts are generated on a GPIO
pin when the IRQ line in question is being disabled.
If the interrupt is freed, bcm2835_gpio_irq_disable() is called which
disables the event generation sources (edge, level). If an event occurred
between the last disabling of hard IRQs and the write to the event
source registers, a bit would be set in the GPIO event detect register
(GPEDSn) which goes unacknowledged by bcm2835_gpio_irq_handler()
so Linux complains loudly.
There is no per-GPIO mask register, so when disabling GPIO interrupts
write 1 to the relevant bit in GPEDSn to clear out any stale events.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The PFC driver causes the kernel to hang on the R-Car gen2 SoC based boards
when the CPU_ALL_PORT() macro is fixed to reflect the reality, i.e. when the
GPIO space becomes actually sparse. This happens because the _GP_GPIO() macro
includes an indexed initializer which causes the "holes" (array entries filled
with all 0s) between the groups of the existing GPIOs; and the driver can't
cope with that. There seems to be no reason to use the indexed initializer,
so we can remove the index specifier and so avoid the "holes".
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Commit a21763a0b1
"pinctrl: nomadik: activate strict mux mode"
put all Nomadik pin controllers to strict mode. This was
not good on the Snowball platform: the muxing of GPIOs to
different pins is done with hogs in the DTS file, and then
these GPIOs are used by offset, relying on hogs to mux the
pins. Since that means the pin controller "owns" the pins
and at the same time we have a GPIO user, this pin controller
is by definition not strict.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Two fairly simple fixes: one is a change that causes us to have a very low
queue depth leading to performance issues and the other is a null deref
occasionally in tapes thanks to use after put.
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two fairly simple fixes: one is a change that causes us to have a very
low queue depth leading to performance issues and the other is a null
deref occasionally in tapes thanks to use after put"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: fix host max depth checking for the 'queue_depth' sysfs interface
st: null pointer dereference panic caused by use after kref_put by st_open
Pull MIPS fixes from Ralf Baechle:
"Another round of MIPS fixes for 4.2.
Things are looking quite decent at this stage but the recent work on
the FPU support took its toll:
- fix an incorrect overly restrictive ifdef
- select O32 64-bit FP support for O32 binary compatibility
- remove workarounds for Sibyte SB1250 Pass1 parts. There are rare
fixing the workarounds is not worth the effort.
- patch up an outdated and now incorrect comment"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: fpu.h: Allow 64-bit FPU on a 64-bit MIPS R6 CPU
MIPS: SB1: Remove support for Pass 1 parts.
MIPS: Require O32 FP64 support for MIPS64 with O32 compat
MIPS: asm-offset.c: Patch up various comments refering to the old filename.
Pull parisc fix from Helge Deller:
"A memory leak fix from Christophe Jaillet which was introduced with
kernel 4.0 and which leads to kernel crashes on parisc after 1-3 days"
* 'parisc-4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: mm: Fix a memory leak related to pmd not attached to the pgd
By far most of the fixes here are updates to DTS files to deal with some
mostly minor bugs.
There's also a fix to deal with non-PM kernel configs on i.MX, a
regression fix for ethernet on PXA platforms and a dependency fix for OMAP.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"By far most of the fixes here are updates to DTS files to deal with
some mostly minor bugs.
There's also a fix to deal with non-PM kernel configs on i.MX, a
regression fix for ethernet on PXA platforms and a dependency fix for
OMAP"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: keystone: dts: rename pcie nodes to help override status
ARM: keystone: dts: fix dt bindings for PCIe
ARM: pxa: fix dm9000 platform data regression
ARM: dts: Correct audio input route & set mic bias for am335x-pepper
ARM: OMAP2+: Add HAVE_ARM_SCU for AM43XX
MAINTAINERS: digicolor: add dts files
ARM: ux500: fix MMC/SD card regression
ARM: ux500: define serial port aliases
ARM: dts: OMAP5: Add #iommu-cells property to IOMMUs
ARM: dts: OMAP4: Add #iommu-cells property to IOMMUs
ARM: dts: Fix frequency scaling on Gumstix Pepper
ARM: dts: configure regulators for Gumstix Pepper
ARM: dts: omap3: overo: Update LCD panel names
ARM: dts: cros-ec-keyboard: Add support for some Japanese keys
ARM: imx6: gpc: always enable PU domain if CONFIG_PM is not set
ARM: dts: imx53-qsb: fix TVE entry
ARM: dts: mx23: fix iio-hwmon support
ARM: dts: imx27: Adjust the GPT compatible string
ARM: socfpga: dts: Fix entries order
ARM: socfpga: dts: Fix adxl34x formating and compatible string
Commit 6134d94923 ("MIPS: asm: fpu: Allow 64-bit FPU on MIPS32 R6")
added support for 64-bit FPU on a 32-bit MIPS R6 processor but it missed
the 64-bit CPU case leading to FPU failures when requesting FR=1 mode
(which is always the case for MIPS R6 userland) when running a 32-bit
kernel on a 64-bit CPU. We also fix the MIPS R2 case.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Fixes: 6134d94923 ("MIPS: asm: fpu: Allow 64-bit FPU on MIPS32 R6")
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: <stable@vger.kernel.org> # 4.0+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10734/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Commit 0e0da48dee ("parisc: mm: don't count preallocated pmds")
introduced a memory leak.
After this commit, the 'return' statement in pmd_free is executed in all
cases. Even for pmd that are not attached to the pgd. So 'free_pages'
can never be called anymore, leading to a memory leak.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v4.0+
Signed-off-by: Helge Deller <deller@gmx.de>
This single fix reenables ethernet cards for several pxa boards,
broken by regulator addition to dm9000 driver.
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Merge tag 'pxa-fixes-v4.2-rc2' of https://github.com/rjarzmik/linux into fixesD
Merge "pxa fixes for v4.2" from Robert Jarzmik:
ARM: pxa: fixes for v4.2-rc2
This single fix reenables ethernet cards for several pxa boards,
broken by regulator addition to dm9000 driver.
* tag 'pxa-fixes-v4.2-rc2' of https://github.com/rjarzmik/linux:
ARM: pxa: fix dm9000 platform data regression
Pull ARM fixes from Russell King:
"A small set of ARM fixes for -rc3, most of them not far off
one-liners, with the exception of fixing the V7 cache invalidation for
incoming SMP processors which was causing problems for SoCFPGA
devices"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: fix __virt_to_idmap build error on !MMU
ARM: invalidate L1 before enabling coherency
ARM: 8404/1: dma-mapping: fix off-by-one error in bitmap size check
ARM: 8402/1: perf: Don't use of_node after putting it
ARM: 8400/1: use virt_to_idmap to get phys_reset address
Pull x86 fixes from Ingo Molnar:
"Two families of fixes:
- Fix an FPU context related boot crash on newer x86 hardware with
larger context sizes than what most people test. To fix this
without ugly kludges or extensive reverts we had to touch core task
allocator, to allow x86 to determine the task size dynamically, at
boot time.
I've tested it on a number of x86 platforms, and I cross-built it
to a handful of architectures:
(warns) (warns)
testing x86-64: -git: pass ( 0), -tip: pass ( 0)
testing x86-32: -git: pass ( 0), -tip: pass ( 0)
testing arm: -git: pass ( 1359), -tip: pass ( 1359)
testing cris: -git: pass ( 1031), -tip: pass ( 1031)
testing m32r: -git: pass ( 1135), -tip: pass ( 1135)
testing m68k: -git: pass ( 1471), -tip: pass ( 1471)
testing mips: -git: pass ( 1162), -tip: pass ( 1162)
testing mn10300: -git: pass ( 1058), -tip: pass ( 1058)
testing parisc: -git: pass ( 1846), -tip: pass ( 1846)
testing sparc: -git: pass ( 1185), -tip: pass ( 1185)
... so I hope the cross-arch impact 'none', as intended.
(by Dave Hansen)
- Fix various NMI handling related bugs unearthed by the big asm code
rewrite and generally make the NMI code more robust and more
maintainable while at it. These changes are a bit late in the
cycle, I hope they are still acceptable.
(by Andy Lutomirski)"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu, sched: Introduce CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT and use it on x86
x86/fpu, sched: Dynamically allocate 'struct fpu'
x86/entry/64, x86/nmi/64: Add CONFIG_DEBUG_ENTRY NMI testing code
x86/nmi/64: Make the "NMI executing" variable more consistent
x86/nmi/64: Minor asm simplification
x86/nmi/64: Use DF to avoid userspace RSP confusing nested NMI detection
x86/nmi/64: Reorder nested NMI checks
x86/nmi/64: Improve nested NMI comments
x86/nmi/64: Switch stacks on userspace NMI entry
x86/nmi/64: Remove asm code that saves CR2
x86/nmi: Enable nested do_nmi() handling for 64-bit kernels
Pull timer fix from Ingo Molnar:
"Fix for a misplaced export that can cause build failures in certain
(rare) Kconfig situations"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tick: Move the export of tick_broadcast_oneshot_control to the proper place
Pull scheduler fix from Ingo Molnar:
"A oneliner rq throttling fix"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Test list head instead of list entry in throttle_cfs_rq()
Pull perf fixes from Ingo Molnar:
"Mostly tooling fixes, plus a static key fix fixing /sys/devices/cpu/rdpmc"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Really allow to specify custom CC, AR or LD
perf auxtrace: Fix misplaced check for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT
perf hists browser: Take the --comm, --dsos, etc filters into account
perf symbols: Store if there is a filter in place
x86, perf: Fix static_key bug in load_mm_cr4()
tools: Copy lib/hweight.c from the kernel sources
perf tools: Fix the detached tarball wrt rbtree copy
perf thread_map: Fix the sizeof() calculation for map entries
tools lib: Improve clean target
perf stat: Fix shadow declaration of close
perf tools: Fix lockup using 32-bit compat vdso
Pull irq fixes from Ingo Molnar:
"Misc irq fixes:
- two driver fixes
- a Xen regression fix
- a nested irq thread crash fix"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gicv3-its: Fix mapping of LPIs to collections
genirq: Prevent resend to interrupts marked IRQ_NESTED_THREAD
genirq: Revert sparse irq locking around __cpu_up() and move it to x86 for now
gpio/davinci: Fix race in installing chained irq handler
Merge fixes from Andrew Morton:
"25 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (25 commits)
lib/decompress: set the compressor name to NULL on error
mm/cma_debug: correct size input to bitmap function
mm/cma_debug: fix debugging alloc/free interface
mm/page_owner: set correct gfp_mask on page_owner
mm/page_owner: fix possible access violation
fsnotify: fix oops in fsnotify_clear_marks_by_group_flags()
/proc/$PID/cmdline: fixup empty ARGV case
dma-debug: skip debug_dma_assert_idle() when disabled
hexdump: fix for non-aligned buffers
checkpatch: fix long line messages about patch context
mm: clean up per architecture MM hook header files
MAINTAINERS: uclinux-h8-devel is moderated for non-subscribers
mailmap: update Sudeep Holla's email id
Update Viresh Kumar's email address
mm, meminit: suppress unused memory variable warning
configfs: fix kernel infoleak through user-controlled format string
include, lib: add __printf attributes to several function prototypes
s390/hugetlb: add hugepages_supported define
mm: hugetlb: allow hugepages_supported to be architecture specific
revert "s390/mm: make hugepages_supported a boot time decision"
...
Pull btrfs fixes from Chris Mason:
"These are all from Filipe, and cover a few problems we've had reported
on the list recently (along with ones he found on his own)"
* 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix file corruption after cloning inline extents
Btrfs: fix order by which delayed references are run
Btrfs: fix list transaction->pending_ordered corruption
Btrfs: fix memory leak in the extent_same ioctl
Btrfs: fix shrinking truncate when the no_holes feature is enabled
Drivers:
- fix mt6397 wakealarm creation
- remove a compilation warning for armada38x that was forgotten
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Merge tag 'rtc-v4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull rtc fixes from Alexandre Belloni:
"A few fixes for the RTC susbsystem for 4.2.
The mt6397 driver was introduce in 4.2 so it is worth fixing before
the final release. I though the compilation warning for armada38x was
fixed by akpm in commit f98b733e93 ("rtc-armada38x.c: remove unused
local `flags'") but he actually missed some occurrences of the
variables. Since I received 4 patches for that, I think we can
include it now.
Summary:
- fix mt6397 wakealarm creation
- remove a compilation warning for armada38x that was forgotten"
* tag 'rtc-v4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
rtc: armada38x: Remove unused variable from armada38x_rtc_set_time()
rtc: mt6397: enable wakeup before registering rtc device
increase and adversely impact both throughput and system load
- Fix for a use after free bug in DM core's device cleanup
- A couple DM btree removal fixes (used by dm-thinp)
- A DM thinp fix for order-5 allocation failure
- A DM thinp fix to not degrade to read-only metadata mode when in
out-of-data-space mode for longer than the 'no_space_timeout'
- Fix a long-standing oversight in both dm-thinp and dm-cache by
now exporting 'needs_check' in status if it was set in metadata
- Fix an embarrassing dm-cache busy-loop that caused worker threads to
eat cpu even if no IO was actively being issued to the cache device
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Merge tag 'dm-4.2-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- revert a request-based DM core change that caused IO latency to
increase and adversely impact both throughput and system load
- fix for a use after free bug in DM core's device cleanup
- a couple DM btree removal fixes (used by dm-thinp)
- a DM thinp fix for order-5 allocation failure
- a DM thinp fix to not degrade to read-only metadata mode when in
out-of-data-space mode for longer than the 'no_space_timeout'
- fix a long-standing oversight in both dm-thinp and dm-cache by now
exporting 'needs_check' in status if it was set in metadata
- fix an embarrassing dm-cache busy-loop that caused worker threads to
eat cpu even if no IO was actively being issued to the cache device
* tag 'dm-4.2-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm cache: avoid calls to prealloc_free_structs() if possible
dm cache: avoid preallocation if no work in writeback_some_dirty_blocks()
dm cache: do not wake_worker() in free_migration()
dm cache: display 'needs_check' in status if it is set
dm thin: display 'needs_check' in status if it is set
dm thin: stay in out-of-data-space mode once no_space_timeout expires
dm: fix use after free crash due to incorrect cleanup sequence
Revert "dm: only run the queue on completion if congested or no requests pending"
dm btree: silence lockdep lock inversion in dm_btree_del()
dm thin: allocate the cell_sort_array dynamically
dm btree remove: fix bug in redistribute3
Don't burden architectures without dynamic task_struct sizing
with the overhead of dynamic sizing.
Also optimize the x86 code a bit by caching task_struct_size.
Acked-and-Tested-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1437128892-9831-3-git-send-email-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The FPU rewrite removed the dynamic allocations of 'struct fpu'.
But, this potentially wastes massive amounts of memory (2k per
task on systems that do not have AVX-512 for instance).
Instead of having a separate slab, this patch just appends the
space that we need to the 'task_struct' which we dynamically
allocate already. This saves from doing an extra slab
allocation at fork().
The only real downside here is that we have to stick everything
and the end of the task_struct. But, I think the
BUILD_BUG_ON()s I stuck in there should keep that from being too
fragile.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1437128892-9831-2-git-send-email-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Without this we end up using the previous name of the compressor in the
loop in unpack_rootfs. For example we get errors like "compression
method gzip not configured" even when we have CONFIG_DECOMPRESS_GZIP
enabled.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In CMA, 1 bit in bitmap means 1 << order_per_bits pages so size of
bitmap is cma->count >> order_per_bits rather than just cma->count.
This patch fixes it.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Stefan Strogin <stefan.strogin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
CMA has alloc/free interface for debugging. It is intended that
alloc/free occurs in specific CMA region, but, currently, alloc/free
interface is on root dir due to the bug so we can't select CMA region
where alloc/free happens.
This patch fixes this problem by making alloc/free interface per CMA
region.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Stefan Strogin <stefan.strogin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently, we set wrong gfp_mask to page_owner info in case of isolated
freepage by compaction and split page. It causes incorrect mixed
pageblock report that we can get from '/proc/pagetypeinfo'. This metric
is really useful to measure fragmentation effect so should be accurate.
This patch fixes it by setting correct information.
Without this patch, after kernel build workload is finished, number of
mixed pageblock is 112 among roughly 210 movable pageblocks.
But, with this fix, output shows that mixed pageblock is just 57.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When I tested my new patches, I found that page pointer which is used
for setting page_owner information is changed. This is because page
pointer is used to set new migratetype in loop. After this work, page
pointer could be out of bound. If this wrong pointer is used for
page_owner, access violation happens. Below is error message that I
got.
BUG: unable to handle kernel paging request at 0000000000b00018
IP: [<ffffffff81025f30>] save_stack_address+0x30/0x40
PGD 1af2d067 PUD 166e0067 PMD 0
Oops: 0002 [#1] SMP
...snip...
Call Trace:
print_context_stack+0xcf/0x100
dump_trace+0x15f/0x320
save_stack_trace+0x2f/0x50
__set_page_owner+0x46/0x70
__isolate_free_page+0x1f7/0x210
split_free_page+0x21/0xb0
isolate_freepages_block+0x1e2/0x410
compaction_alloc+0x22d/0x2d0
migrate_pages+0x289/0x8b0
compact_zone+0x409/0x880
compact_zone_order+0x6d/0x90
try_to_compact_pages+0x110/0x210
__alloc_pages_direct_compact+0x3d/0xe6
__alloc_pages_nodemask+0x6cd/0x9a0
alloc_pages_current+0x91/0x100
runtest_store+0x296/0xa50
simple_attr_write+0xbd/0xe0
__vfs_write+0x28/0xf0
vfs_write+0xa9/0x1b0
SyS_write+0x46/0xb0
system_call_fastpath+0x16/0x75
This patch fixes this error by moving up set_page_owner().
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
