When an IRQ is started on a GPIO line, mark this GPIO as IRQ in
the gpiolib so we can keep track of the usage centrally.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When an IRQ is started on a GPIO line, mark this GPIO as IRQ in
the gpiolib so we can keep track of the usage centrally.
Cc: Enric Balletbo i Serra <eballetbo@gmail.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
It is currently often possible in many GPIO drivers to request
a GPIO line to be used as IRQ after calling gpio_to_irq() and,
as the gpiolib is not aware of this, set the same line to
output and start driving it, with undesired side effects.
As it is a bogus usage scenario to request a line flagged as
output to used as IRQ, we introduce APIs to let gpiolib track
the use of a line as IRQ, and also set this flag from the
userspace ABI.
The API is symmetric so that lines can also be flagged from
.irq_enable() and unflagged from IRQ by .irq_disable().
The debugfs file is altered so that we see if a line is
reserved for IRQ.
Cc: Enric Balletbo i Serra <eballetbo@gmail.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
I have no idea why this driver is using __raw* accessors for
reading and writing registers, I suspect it is just force of
habit or copy/paste. Change all to readb()/writeb() except
one chain where I used writeb_relaxed() up until the last
writeb().
Cc: Ryan Mallon <rmallon@gmail.com>
Cc: H Hartley Sweeten <hartleys@visionengravers.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Rename the argument "virq" to just "irq", this IRQ isn't any
more "virtual" than any other Linux IRQ number, we use "hwirq"
for the actual hw-numbers, "virq" is just bogus.
When doing this I see that the hwirq argument is used
for mapping rather than the Linux IRQ in the map function.
This doesn't look right. Use the Linux IRQ instead.
I cannot test this patch so I don't know if the mapping change
is correct, however since absolutely every other driver does
it the other way around this doesn't look sound at all. Please
help out with review.
Cc: Vipul Kumar Samar <vipulkumar.samar@st.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Gabriel Fernandez <gabriel.fernandez@st.com>
Cc: Jean-Nicolas Graux <jean-nicolas.graux@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Rename the argument "virq" to just "irq", this IRQ isn't any
more "virtual" than any other Linux IRQ number, we use "hwirq"
for the actual hw-numbers, "virq" is just bogus.
Cc: Magnus Damm <damm@opensource.se>
Acked-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Rename the argument "virq" to just "irq", this IRQ isn't any
more "virtual" than any other Linux IRQ number, we use "hwirq"
for the actual hw-numbers, "virq" is just bogus.
Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Rename the argument "virq" to just "irq", this IRQ isn't any
more "virtual" than any other Linux IRQ number, we use "hwirq"
for the actual hw-numbers, "virq" is just bogus.
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Rename the argument "virq" to just "irq", this IRQ isn't any
more "virtual" than any other Linux IRQ number, we use "hwirq"
for the actual hw-numbers, "virq" is just bogus. Take this
opportunity to sink a variable into a loop.
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Rename the argument "virq" to just "irq", this IRQ isn't any
more "virtual" than any other Linux IRQ number, we use "hwirq"
for the actual hw-numbers, "virq" is just bogus.
Acked-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Rename the argument "virq" to just "irq", this IRQ isn't any
more "virtual" than any other Linux IRQ number, we use "hwirq"
for the actual hw-numbers, "virq" is just bogus.
Cc: Magnus Damm <damm@opensource.se>
Reviewed-by: Ian Molton <ian.molton@codethink.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Rename the argument "virq" to just "irq", this IRQ isn't any
more "virtual" than any other Linux IRQ number, we use "hwirq"
for the actual hw-numbers, "virq" is just bogus. Rename the
"gpio" variable to "hwirq" to reflect what it is. Rename one
instance of "virq" to "child_irq" that better describes what
it is.
Cc: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This variable is confusingly named, the different Linux IRQs
aren't any more virtual than any other Linux IRQ. Give it a
non-misleading name.
Acked-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Rename the argument "virq" to just "irq", this IRQ isn't any
more "virtual" than any other Linux IRQ number, we use "hwirq"
for the actual hw-numbers, "virq" is just bogus.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The GPIO interrupt handler does not need to be marked as nested.
Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Assign david.a.cohen@linux.intel.com as maintainer of Intel MID gpio
driver at drivers/gpio/gpio-intel-mid.c.
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
After file was renamed from gpio-langwell to gpio-intel-mid, this patch
updates the variables, functions and structs to be based on intel-mid
instead of langwell.
There is no function change.
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
gpio-langwell is a deprecated name. Despite the driver was made
initially for Langwell, it supports now other Intel Mid SoC's.
This patch does no change beside the file renaming with Kconfig/Makefile
update.
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch implements a better way to handle multiple SoC's and adds
Intel Merrifield support to gpio-langwell.
It was based on previous work from Ning Li <ning.li@intel.com>
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Fei Yang <fei.yang@intel.com>
Signed-off-by: Ning Li <ning.li@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
It makes more sense to have these functions close to each other. No
functional changes.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Modify the code to use current_euid(), and in_egroup_p, as in done
in fs/proc/proc_sysctl.c:test_perm()
Cc: stable@vger.kernel.org
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reported-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull SCSI target fixes from Nicholas Bellinger:
"Here are the outstanding target fixes queued up for v3.12-rc4 code.
The highlights include:
- Make vhost/scsi tag percpu_ida_alloc() use GFP_ATOMIC
- Allow sess_cmd_map allocation failure fallback to use vzalloc
- Fix COMPARE_AND_WRITE se_cmd->data_length bug with FILEIO backends
- Fixes for COMPARE_AND_WRITE callback recursive failure OOPs + non
zero scsi_status bug
- Make iscsi-target do acknowledgement tag release from RX context
- Setup iscsi-target with extra (cmdsn_depth / 2) percpu_ida tags
Also included is a iscsi-target patch CC'ed for v3.10+ that avoids
legacy wait_for_task=true release during fast-past StatSN
acknowledgement, and two other SRP target related patches that address
long-standing issues that are CC'ed for v3.3+.
Extra thanks to Thomas Glanzmann for his testing feedback with
COMPARE_AND_WRITE + EXTENDED_COPY VAAI logic"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
iscsi-target; Allow an extra tag_num / 2 number of percpu_ida tags
iscsi-target: Perform release of acknowledged tags from RX context
iscsi-target: Only perform wait_for_tasks when performing shutdown
target: Fail on non zero scsi_status in compare_and_write_callback
target: Fix recursive COMPARE_AND_WRITE callback failure
target: Reset data_length for COMPARE_AND_WRITE to NoLB * block_size
ib_srpt: always set response for task management
target: Fall back to vzalloc upon ->sess_cmd_map kzalloc failure
vhost/scsi: Use GFP_ATOMIC with percpu_ida_alloc for obtaining tag
ib_srpt: Destroy cm_id before destroying QP.
target: Fix xop->dbl assignment in target_xcopy_parse_segdesc_02
Pull slave-dmaengine fixes from Vinod Koul:
"Here is the slave dmanegine fixes. We have the fix for deadlock issue
on imx-dma by Michael and Josh's edma config fix along with author
change"
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: imx-dma: fix callback path in tasklet
dmaengine: imx-dma: fix lockdep issue between irqhandler and tasklet
dmaengine: imx-dma: fix slow path issue in prep_dma_cyclic
dma/Kconfig: Make TI_EDMA select TI_PRIV_EDMA
edma: Update author email address
Pull btrfs fixes from Chris Mason:
"This is a small collection of fixes, including a regression fix from
Liu Bo that solves rare crashes with compression on.
I've merged my for-linus up to 3.12-rc3 because the top commit is only
meant for 3.12. The rest of the fixes are also available in my master
branch on top of my last 3.11 based pull"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: Fix crash due to not allocating integrity data for a bioset
Btrfs: fix a use-after-free bug in btrfs_dev_replace_finishing
Btrfs: eliminate races in worker stopping code
Btrfs: fix crash of compressed writes
Btrfs: fix transid verify errors when recovering log tree
- Two patches for the OMAP driver, dealing with setting up IRQs
properly on the device tree boot path.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)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=ALq3
-----END PGP SIGNATURE-----
Merge tag 'gpio-v3.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Two patches for the OMAP driver, dealing with setting up IRQs properly
on the device tree boot path"
* tag 'gpio-v3.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio/omap: auto-setup a GPIO when used as an IRQ
gpio/omap: maintain GPIO and IRQ usage separately
Here are 9 fixes for various USB driver problems. The majority are
gadget/musb fixes, but there are some new device ids in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.21 (GNU/Linux)
iEYEABECAAYFAlJQTVYACgkQMUfUDdst+yn5AwCeL1hSBWmUUeT7GBHtcPmMroZ1
2EIAnjQULEy4EUMgj94aqfnL0ZuNDxOp
=xyGg
-----END PGP SIGNATURE-----
Merge tag 'usb-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are none fixes for various USB driver problems. The majority are
gadget/musb fixes, but there are some new device ids in here as well"
* tag 'usb-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: chipidea: add Intel Clovertrail pci id
usb: gadget: s3c-hsotg: fix can_write limit for non-periodic endpoints
usb: gadget: f_fs: fix error handling
usb: musb: dsps: do not bind to "musb-hdrc"
USB: serial: option: Ignore card reader interface on Huawei E1750
usb: musb: gadget: fix otg active status flag
usb: phy: gpio-vbus: fix deferred probe from __init
usb: gadget: pxa25x_udc: fix deferred probe from __init
usb: musb: fix otg default state
Here are 2 tty driver fixes for 3.12-rc4.
One fixes the reported regression in the n_tty code that a number of
people found recently, and the other one fixes an issue with xen
consoles that broke in 3.10.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.21 (GNU/Linux)
iEYEABECAAYFAlJQTOgACgkQMUfUDdst+ym/EQCdFJ3hmK57vr69oSndkzV5Mx2/
ZqsAn1NPAK5j3Wtkl0eoHe8HSLDu8VGC
=pqUF
-----END PGP SIGNATURE-----
Merge tag 'tty-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty fixes from Greg KH:
"Here are two tty driver fixes for 3.12-rc4.
One fixes the reported regression in the n_tty code that a number of
people found recently, and the other one fixes an issue with xen
consoles that broke in 3.10"
* tag 'tty-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
xen/hvc: allow xenboot console to be used again
tty: Fix pty master read() after slave closes
Here are 4 tiny staging and iio driver fixes for 3.12-rc4. Nothing
major, just some small fixes for reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.21 (GNU/Linux)
iEYEABECAAYFAlJQTFkACgkQMUfUDdst+ynmmACcDHkGRZ6um7GTusOcDcddk+Mu
wJIAoKBkk7gDESTvBPJRXsHl8GjIV+C4
=H+5r
-----END PGP SIGNATURE-----
Merge tag 'staging-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging fixes from Greg KH:
"Here are 4 tiny staging and iio driver fixes for 3.12-rc4. Nothing
major, just some small fixes for reported issues"
* tag 'staging-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: comedi: ni_65xx: (bug fix) confine insn_bits to one subdevice
iio:magnetometer: Bugfix magnetometer default output registers
iio: Remove debugfs entries in iio_device_unregister()
iio: amplifiers: ad8366: Remove regulator_put
Pull CIFS fixes from Steve French:
"Small set of cifs fixes. Most important is Jeff's fix that works
around disconnection problems which can be caused by simultaneous use
of user space tools (starting a long running smbclient backup then
doing a cifs kernel mount) or multiple cifs mounts through a NAT, and
Jim's fix to deal with reexport of cifs share.
I expect to send two more cifs fixes next week (being tested now) -
fixes to address an SMB2 unmount hang when server dies and a fix for
cifs symlink handling of Windows "NFS" symlinks"
* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
[CIFS] update cifs.ko version
[CIFS] Remove ext2 flags that have been moved to fs.h
[CIFS] Provide sane values for nlink
cifs: stop trying to use virtual circuits
CIFS: FS-Cache: Uncache unread pages in cifs_readpages() before freeing them
MMCONFIG
Revert "x86/PCI: MMCONFIG: Check earlier for MMCONFIG region at address zero"
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=LqLn
-----END PGP SIGNATURE-----
Merge tag 'pci-v3.12-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fix from Bjorn Helgaas:
"We merged what was intended to be an MMCONFIG cleanup, but in fact,
for systems without _CBA (which is almost everything), it broke
extended config space for domain 0 and it broke all config space for
other domains.
This reverts the change"
* tag 'pci-v3.12-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
Revert "x86/PCI: MMCONFIG: Check earlier for MMCONFIG region at address zero"
This reverts commit 07f9b61c39.
07f9b61c was intended to be a cleanup that didn't change anything, but in
fact, for systems without _CBA (which is almost everything), it broke
extended config space for domain 0 and all config space for other domains.
Reference: http://lkml.kernel.org/r/20131004011806.GE20450@dangermouse.emea.sgi.com
Reported-by: Hedi Berriche <hedi@sgi.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
1) The resume part of user space driven hibernation (s2disk) is now
broken after the change that moved the creation of memory bitmaps
to after the freezing of tasks, because I forgot that the resume
utility loaded the image before freezing tasks and needed the
bitmaps for that. The fix adds special handling for that case.
2) One of recent commits changed the export of acpi_bus_get_device()
to EXPORT_SYMBOL_GPL(), which was technically correct but broke
existing binary modules using that function including one in
particularly widespread use. Change it back to EXPORT_SYMBOL().
3) The intel_pstate driver sometimes fails to disable turbo if its
no_turbo sysfs attribute is set. Fix from Srinivas Pandruvada.
4) One of recent cpufreq fixes forgot to update a check in cpufreq-cpu0
which still (incorrectly) treats non-NULL as non-error. Fix from
Philipp Zabel.
5) The SPEAr cpufreq driver uses a wrong variable type in one place
preventing it from catching errors returned by one of the functions
called by it. Fix from Sachin Kamat.
/
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)
iQIcBAABCAAGBQJSTvXfAAoJEKhOf7ml8uNslkkP+QGoghnGR9hScYq/0Mcnzr4b
kwkiRx54NggjzzN8Q+ejZmxNZ7UZt3q05PmHPtJk3A8gzqIMsb83jnXsZNiDiQs6
m+KBYrV5dhPZkp08X2tHJp5ijZNRULpp9QA49ulnLfVT/A+rkr5xBCK0W3ln/zL3
tJSlGJ3N7yYUXe3nMRCCNnnnAzWA+Tk8yRaMx5MnFqlQWWnyx1SGKjD/kVv0/3RA
6rlDPQEIuoCTqLKotnGIqVN2hTFPFJKc9yTrRGZ15pMjdUGHMwnHy6KMAdXy4Rdh
R1DOdf+bvPkkFiGE1D1vKOt7pdOG/cTtNkppvWZRuoGg2AMJGm5KWlrdLhlvunyt
IQXmdt/eWecNr+WzN8FiDp4LEQcI6VjEDaJ3qbjXHLH/FOupBKXYoNWpejj4bGSE
PtPmJYjNpD2vF3cdtt80ZAYSxhLutwPQksoAwyJ40++l53Ygi81BO31LWZQnDk/8
HPWOXFThmWJtT03b0sG25GpboiCpYtHEmbwQe+y+pRx7L12HBfE4StT3hmv5Z9J4
RXXB3yNq4ApXtFq1mitpiPmSVfYe+zu590m7ZUr457BpXi7MH17tzDn9nUJ2eTZl
kXwUNWiRKGjPmKYxV/ml/apClozsGMFP+XoZkYotFd0W5+SVLuhdXdtClIt4NAbD
dUkYVMm/BBBALpmH+yKw
=P4mh
-----END PGP SIGNATURE-----
Merge tag 'pm+acpi-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
- The resume part of user space driven hibernation (s2disk) is now
broken after the change that moved the creation of memory bitmaps to
after the freezing of tasks, because I forgot that the resume utility
loaded the image before freezing tasks and needed the bitmaps for
that. The fix adds special handling for that case.
- One of recent commits changed the export of acpi_bus_get_device() to
EXPORT_SYMBOL_GPL(), which was technically correct but broke existing
binary modules using that function including one in particularly
widespread use. Change it back to EXPORT_SYMBOL().
- The intel_pstate driver sometimes fails to disable turbo if its
no_turbo sysfs attribute is set. Fix from Srinivas Pandruvada.
- One of recent cpufreq fixes forgot to update a check in cpufreq-cpu0
which still (incorrectly) treats non-NULL as non-error. Fix from
Philipp Zabel.
- The SPEAr cpufreq driver uses a wrong variable type in one place
preventing it from catching errors returned by one of the functions
called by it. Fix from Sachin Kamat.
* tag 'pm+acpi-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: Use EXPORT_SYMBOL() for acpi_bus_get_device()
intel_pstate: fix no_turbo
cpufreq: cpufreq-cpu0: NULL is a valid regulator, part 2
cpufreq: SPEAr: Fix incorrect variable type
PM / hibernate: Fix user space driven resume regression
- lockdep fix for project quotas
- fix for dirent dtype support on v4 filesystems
- fix for a memory leak in recovery
- fix for build failure due to the recovery fix
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)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=eNZa
-----END PGP SIGNATURE-----
Merge tag 'xfs-for-linus-v3.12-rc4' of git://oss.sgi.com/xfs/xfs
Pull xfs bugfixes from Ben Myers:
"There are lockdep annotations for project quotas, a fix for dirent
dtype support on v4 filesystems, a fix for a memory leak in recovery,
and a fix for the build error that resulted from it. D'oh"
* tag 'xfs-for-linus-v3.12-rc4' of git://oss.sgi.com/xfs/xfs:
xfs: Use kmem_free() instead of free()
xfs: fix memory leak in xlog_recover_add_to_trans
xfs: dirent dtype presence is dependent on directory magic numbers
xfs: lockdep needs to know about 3 dquot-deep nesting
.. so get rid of it. The only indirect users were all the
avc_has_perm() callers which just expanded to have a zero flags
argument.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
free_device rcu callback, scheduled from btrfs_rm_dev_replace_srcdev,
can be processed before btrfs_scratch_superblock is called, which would
result in a use-after-free on btrfs_device contents. Fix this by
zeroing the superblock before the rcu callback is registered.
Cc: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
The current implementation of worker threads in Btrfs has races in
worker stopping code, which cause all kinds of panics and lockups when
running btrfs/011 xfstest in a loop. The problem is that
btrfs_stop_workers is unsynchronized with respect to check_idle_worker,
check_busy_worker and __btrfs_start_workers.
E.g., check_idle_worker race flow:
btrfs_stop_workers(): check_idle_worker(aworker):
- grabs the lock
- splices the idle list into the
working list
- removes the first worker from the
working list
- releases the lock to wait for
its kthread's completion
- grabs the lock
- if aworker is on the working list,
moves aworker from the working list
to the idle list
- releases the lock
- grabs the lock
- puts the worker
- removes the second worker from the
working list
......
btrfs_stop_workers returns, aworker is on the idle list
FS is umounted, memory is freed
......
aworker is waken up, fireworks ensue
With this applied, I wasn't able to trigger the problem in 48 hours,
whereas previously I could reliably reproduce at least one of these
races within an hour.
Reported-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
The crash[1] is found by xfstests/generic/208 with "-o compress",
it's not reproduced everytime, but it does panic.
The bug is quite interesting, it's actually introduced by a recent commit
(573aecafca,
Btrfs: actually limit the size of delalloc range).
Btrfs implements delay allocation, so during writeback, we
(1) get a page A and lock it
(2) search the state tree for delalloc bytes and lock all pages within the range
(3) process the delalloc range, including find disk space and create
ordered extent and so on.
(4) submit the page A.
It runs well in normal cases, but if we're in a racy case, eg.
buffered compressed writes and aio-dio writes,
sometimes we may fail to lock all pages in the 'delalloc' range,
in which case, we need to fall back to search the state tree again with
a smaller range limit(max_bytes = PAGE_CACHE_SIZE - offset).
The mentioned commit has a side effect, that is, in the fallback case,
we can find delalloc bytes before the index of the page we already have locked,
so we're in the case of (delalloc_end <= *start) and return with (found > 0).
This ends with not locking delalloc pages but making ->writepage still
process them, and the crash happens.
This fixes it by just thinking that we find nothing and returning to caller
as the caller knows how to deal with it properly.
[1]:
------------[ cut here ]------------
kernel BUG at mm/page-writeback.c:2170!
[...]
CPU: 2 PID: 11755 Comm: btrfs-delalloc- Tainted: G O 3.11.0+ #8
[...]
RIP: 0010:[<ffffffff810f5093>] [<ffffffff810f5093>] clear_page_dirty_for_io+0x1e/0x83
[...]
[ 4934.248731] Stack:
[ 4934.248731] ffff8801477e5dc8 ffffea00049b9f00 ffff8801869f9ce8 ffffffffa02b841a
[ 4934.248731] 0000000000000000 0000000000000000 0000000000000fff 0000000000000620
[ 4934.248731] ffff88018db59c78 ffffea0005da8d40 ffffffffa02ff860 00000001810016c0
[ 4934.248731] Call Trace:
[ 4934.248731] [<ffffffffa02b841a>] extent_range_clear_dirty_for_io+0xcf/0xf5 [btrfs]
[ 4934.248731] [<ffffffffa02a8889>] compress_file_range+0x1dc/0x4cb [btrfs]
[ 4934.248731] [<ffffffff8104f7af>] ? detach_if_pending+0x22/0x4b
[ 4934.248731] [<ffffffffa02a8bad>] async_cow_start+0x35/0x53 [btrfs]
[ 4934.248731] [<ffffffffa02c694b>] worker_loop+0x14b/0x48c [btrfs]
[ 4934.248731] [<ffffffffa02c6800>] ? btrfs_queue_worker+0x25c/0x25c [btrfs]
[ 4934.248731] [<ffffffff810608f5>] kthread+0x8d/0x95
[ 4934.248731] [<ffffffff81060868>] ? kthread_freezable_should_stop+0x43/0x43
[ 4934.248731] [<ffffffff814fe09c>] ret_from_fork+0x7c/0xb0
[ 4934.248731] [<ffffffff81060868>] ? kthread_freezable_should_stop+0x43/0x43
[ 4934.248731] Code: ff 85 c0 0f 94 c0 0f b6 c0 59 5b 5d c3 0f 1f 44 00 00 55 48 89 e5 41 54 53 48 89 fb e8 2c de 00 00 49 89 c4 48 8b 03 a8 01 75 02 <0f> 0b 4d 85 e4 74 52 49 8b 84 24 80 00 00 00 f6 40 20 01 75 44
[ 4934.248731] RIP [<ffffffff810f5093>] clear_page_dirty_for_io+0x1e/0x83
[ 4934.248731] RSP <ffff8801869f9c48>
[ 4934.280307] ---[ end trace 36f06d3f8750236a ]---
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
If we crash with a log, remount and recover that log, and then crash before we
can commit another transaction we will get transid verify errors on the next
mount. This is because we were not zero'ing out the log when we committed the
transaction after recovery. This is ok as long as we commit another transaction
at some point in the future, but if you abort or something else goes wrong you
can end up in this weird state because the recovery stuff says that the tree log
should have a generation+1 of the super generation, which won't be the case of
the transaction that was started for recovery. Fix this by removing the check
and _always_ zero out the log portion of the super when we commit a transaction.
This fixes the transid verify issues I was seeing with my force errors tests.
Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Every single user passes in '0'. I think we had non-zero users back in
some stone age when selinux_inode_permission() was implemented in terms
of inode_has_perm(), but that complicated case got split up into a
totally separate code-path so that we could optimize the much simpler
special cases.
See commit 2e33405785 ("SELinux: delay initialization of audit data in
selinux_inode_permission") for example.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This fixes a build failure caused by calling the free() function which
does not exist in the Linux kernel.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
(cherry picked from commit aaaae98022)
Free the memory in error path of xlog_recover_add_to_trans().
Normally this memory is freed in recovery pass2, but is leaked
in the error path.
Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
(cherry picked from commit 519ccb81ac)
The determination of whether a directory entry contains a dtype
field originally was dependent on the filesystem having CRCs
enabled. This meant that the format for dtype beign enabled could be
determined by checking the directory block magic number rather than
doing a feature bit check. This was useful in that it meant that we
didn't need to pass a struct xfs_mount around to functions that
were already supplied with a directory block header.
Unfortunately, the introduction of dtype fields into the v4
structure via a feature bit meant this "use the directory block
magic number" method of discriminating the dirent entry sizes is
broken. Hence we need to convert the places that use magic number
checks to use feature bit checks so that they work correctly and not
by chance.
The current code works on v4 filesystems only because the dirent
size roundup covers the extra byte needed by the dtype field in the
places where this problem occurs.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
(cherry picked from commit 367993e7c6)
Michael Semon reported that xfs/299 generated this lockdep warning:
=============================================
[ INFO: possible recursive locking detected ]
3.12.0-rc2+ #2 Not tainted
---------------------------------------------
touch/21072 is trying to acquire lock:
(&xfs_dquot_other_class){+.+...}, at: [<c12902fb>] xfs_trans_dqlockedjoin+0x57/0x64
but task is already holding lock:
(&xfs_dquot_other_class){+.+...}, at: [<c12902fb>] xfs_trans_dqlockedjoin+0x57/0x64
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&xfs_dquot_other_class);
lock(&xfs_dquot_other_class);
*** DEADLOCK ***
May be due to missing lock nesting notation
7 locks held by touch/21072:
#0: (sb_writers#10){++++.+}, at: [<c11185b6>] mnt_want_write+0x1e/0x3e
#1: (&type->i_mutex_dir_key#4){+.+.+.}, at: [<c11078ee>] do_last+0x245/0xe40
#2: (sb_internal#2){++++.+}, at: [<c122c9e0>] xfs_trans_alloc+0x1f/0x35
#3: (&(&ip->i_lock)->mr_lock/1){+.+...}, at: [<c126cd1b>] xfs_ilock+0x100/0x1f1
#4: (&(&ip->i_lock)->mr_lock){++++-.}, at: [<c126cf52>] xfs_ilock_nowait+0x105/0x22f
#5: (&dqp->q_qlock){+.+...}, at: [<c12902fb>] xfs_trans_dqlockedjoin+0x57/0x64
#6: (&xfs_dquot_other_class){+.+...}, at: [<c12902fb>] xfs_trans_dqlockedjoin+0x57/0x64
The lockdep annotation for dquot lock nesting only understands
locking for user and "other" dquots, not user, group and quota
dquots. Fix the annotations to match the locking heirarchy we now
have.
Reported-by: Michael L. Semon <mlsemon35@gmail.com>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
(cherry picked from commit f112a04971)
Pull fuse bugfixes from Miklos Szeredi:
"This contains two more fixes by Maxim for writeback/truncate races and
fixes for RCU walk in fuse_dentry_revalidate()"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: no RCU mode in fuse_access()
fuse: readdirplus: fix RCU walk
fuse: don't check_submounts_and_drop() in RCU walk
fuse: fix fallocate vs. ftruncate race
fuse: wait for writeback in fuse_file_fallocate()
A couple of fixes from the IOMMU side:
* Some small fixes for the new ARM-SMMU driver
* A register offset correction for VT-d
* Adding MAINTAINERS entry for drivers/iommu
Overall no really big or intrusive changes.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=a8UE
-----END PGP SIGNATURE-----
Merge tag 'iommu-fixes-v3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
"A couple of fixes from the IOMMU side:
- some small fixes for the new ARM-SMMU driver
- a register offset correction for VT-d
- add MAINTAINERS entry for drivers/iommu
Overall no really big or intrusive changes"
* tag 'iommu-fixes-v3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
x86/iommu: correct ICS register offset
MAINTAINERS: add overall IOMMU section
iommu/arm-smmu: don't enable SMMU device until probing has completed
iommu/arm-smmu: fix iommu_present() test in init
iommu/arm-smmu: fix a signedness bug
