Currently existing dio workers can jump in and potentially increase
extent tree depth while we're allocating blocks in
ext4_alloc_file_blocks(). This may cause us to underestimate the
number of credits needed for the transaction because the extent tree
depth can change after our estimation.
Fix this by waiting for all the existing dio workers in the same way
as we do it in ext4_punch_hole. We've seen errors caused by this in
xfstest generic/299, however it's really hard to reproduce.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Currently in ext4_alloc_file_blocks() the number of credits is
calculated only once before we enter the allocation loop. However within
the allocation loop the extent tree depth can change, hence the number
of credits needed can increase potentially exceeding the number of credits
reserved in the handle which can cause journal failures.
Fix this by recalculating number of credits when the inode depth
changes. Note that even though ext4_alloc_file_blocks() is only
currently used by extent base inodes we will avoid recalculating number
of credits unnecessarily in the case of indirect based inodes.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Pull dmaengine fixes from Vinod Koul:
"Here are hopefully last set of fixes for 4.1. This time we have:
- fixing pause capability reporting on both dmaengine pause & resume
support by Krzysztof
- locking fix fir at_xdmac by Ludovic
- slave configuration fix for at_xdmac by Ludovic"
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: Fix choppy sound because of unimplemented resume
dmaengine: at_xdmac: rework slave configuration part
dmaengine: at_xdmac: lock fixes
and an uninitialized variable on Atom platforms.
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Merge tag 'ntb-4.1' of git://github.com/jonmason/ntb
Pull NTB fixes from Jon Mason:
"I apologize for the tardiness of this request. Here are a couple of
last minute NTB bug fixes for v4.1:
NTB bug fixes to address issues in unmapping the MW reg base and
vbase, and an uninitialized variable on Atom platforms"
* tag 'ntb-4.1' of git://github.com/jonmason/ntb:
ntb: initialize max_mw for Atom before using it
ntb: iounmap MW reg and vbase in error path
Pull more MIPS fixes from Ralf Baechle:
"Another round of 4.1 MIPS fixes, one fix to a MIPS-specific #if
condition in lib/mpi, one fix to the MIPS GIC irqchip driver and one
SSB fix.
Details:
- fix handling of clock in chipco SSB driver.
- fix two MIPS-specific #if conditions to correctly work for GCC 5.1.
- fix damage to R6 pgtable bits done by XPA support.
- fix possible crash due to unloading modules that contain statically
defined platform devices.
- fix disabling of the MSA ASE on context switch to also work
correctly when a new thread/process has the CPU for the very first
time.
This is part of linux-next and has been beaten to death on
Imagination's test farm.
While things are not looking too grim this pull request also means the
rate of fixes for 4.1 remains nearly constant so I'd not be unhappy if
you'd delay the release"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MPI: MIPS: Fix compilation error with GCC 5.1
IRQCHIP: mips-gic: Don't nest calls to do_IRQ()
MIPS: MSA: bugfix - disable MSA correctly for new threads/processes.
MIPS: Loongson: Do not register 8250 platform device from module.
MIPS: Cobalt: Do not build MTD platform device registration code as module.
SSB: Fix handling of ssb_pmu_get_alp_clock()
MIPS: pgtable-bits: Fix XPA damage to R6 definitions.
Add Johannes Weiner as a co-maintainer of cgroup core. Johannes has
been heavily involved with the design of the v2 interface and is
familiar with design and implementation of cgroup core.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Pull irqchip fix from Thomas Gleixner:
"A single fix for an off by one bug in the sunxi irqchip driver"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: sunxi-nmi: Fix off-by-one error in irq iterator
Pull lockdep fix from Ingo Molnar:
"A lockdep/modules unload race fix that can oops"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lockdep: Fix a race between /proc/lock_stat and module unload
Pull perf fixes from Ingo Molnar:
"A regression fix for a crash, and a Intel HSW uncore PMU driver fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "perf/x86/intel/uncore: Move uncore_box_init() out of driver initialization"
perf/x86/intel/uncore: Fix CBOX bit wide and UBOX reg on Haswell-EP
Most of commits are regression fixes for HD-audio: a few corner case
fixes for regmap transition, and i915 binding issues. In addition, a
quirk for another USB-audio device supporting DSD.
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Merge tag 'sound-4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Most of commits are regression fixes for HD-audio: a few corner case
fixes for regmap transition, and i915 binding issues.
In addition, a quirk for another USB-audio device supporting DSD"
* tag 'sound-4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Abort the probe without i915 binding for HSW/BDW
ALSA: hda - Re-add the lost fake mute support
ALSA: hda - Continue probing even if i915 binding fails
ALSA: hda - Don't actually write registers for caps overwrites
ALSA: hda - fix number of devices query on hotplug
ALSA: usb-audio: add native DSD support for JLsounds I2SoverUSB
This patch adds a suspended testcase into the xmit_async functionality.
In the hope that we can found race conditions when xmit_async is called
after an ieee802154_ops stop. This should never happen.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for sleep state when between stop and start
period. In this period the transceiver isn't used by the subsystem, in
this time we disable the irq and going into the sleep state.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch use high level interrupt type as fallback handling when no
irq type is given.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch flushs the workqueue which is currently used for xmit_sync
callback before calling stop driver-ops. Flush the queue will ensure all
pending tx frames are transmitted.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The interframe spacing timer is a per phy definition and is part of a
ieee802154_local structure. If we have possible multiple interfaces
ifdown one interface then the timer should not be cancled. First if the
last interface is down and the receive handling is stopped we should be
sure that the interframe spacing timer isn't run anymore.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch replaces !netif_running(sdata->dev) with
!ieee802154_sdata_running(sdata) and also devide the
code two separate if branches.
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
->auto_asconf_splist is per namespace and mangled by functions like
sctp_setsockopt_auto_asconf() which doesn't guarantee any serialization.
Also, the call to inet_sk_copy_descendant() was backuping
->auto_asconf_list through the copy but was not honoring
->do_auto_asconf, which could lead to list corruption if it was
different between both sockets.
This commit thus fixes the list handling by using ->addr_wq_lock
spinlock to protect the list. A special handling is done upon socket
creation and destruction for that. Error handlig on sctp_init_sock()
will never return an error after having initialized asconf, so
sctp_destroy_sock() can be called without addrq_wq_lock. The lock now
will be take on sctp_close_sock(), before locking the socket, so we
don't do it in inverse order compared to sctp_addr_wq_timeout_handler().
Instead of taking the lock on sctp_sock_migrate() for copying and
restoring the list values, it's preferred to avoid rewritting it by
implementing sctp_copy_descendant().
Issue was found with a test application that kept flipping sysctl
default_auto_asconf on and off, but one could trigger it by issuing
simultaneous setsockopt() calls on multiple sockets or by
creating/destroying sockets fast enough. This is only triggerable
locally.
Fixes: 9f7d653b67 ("sctp: Add Auto-ASCONF support (core).")
Reported-by: Ji Jianwen <jiji@redhat.com>
Suggested-by: Neil Horman <nhorman@tuxdriver.com>
Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There are some resource leaks in yenta_probe() and _close(). I fixed
the following issues with some code cleanups. Thanks to Dominik's
suggestions.
On the error path in yenta_probe():
- a requested irq is not released
- yenta_free_resources() and pci_set_drvdata(dev, NULL) are not called
In yenta_close():
- kfree(sock) is not called
- sock->base is always set to non-NULL when yenta_close() is called,
therefore the check in yenta_close() is not necessary.
Signed-off-by: Takeshi Yoshimura <yos@sslab.ics.keio.ac.jp>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
If CONFIG_88EU_AP_MODE is undefined, OnAuth() is never referenced.
Fixes warning:
drivers/staging/rtl8188eu/core/rtw_mlme_ext.c:2725:21: warning: ‘OnAuth’ defined but not used [-Wunused-function]
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Fixes: 68345dd7bc ("staging: rtl8188eu: rtw_mlme_ext.c: unexport message callbacks")
Cc: Greg Kroah-Hartman <gregkh@linux.com>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If CONFIG_88EU_AP_MODE is undefined, issue_asocrsp() is never referenced.
Fixes warning:
drivers/staging/rtl8188eu/core/rtw_mlme_ext.c:891:13: warning: ‘issue_asocrsp’ defined but not used [-Wunused-function]
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Fixes: 782eddd748 ("staging: rtl8188eu: unexport internal functions")
Cc: Greg Kroah-Hartman <gregkh@linux.com>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 9ef7db7f38 ("ufs: fix deadlocks introduced by sb
mutex merge") That patch tried to solve commit 0244756edc ("ufs: sb
mutex merge + mutex_destroy") which is itself partially reverted due to
multiple deadlocks.
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Suggested-by: Jan Kara <jack@suse.cz>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Evgeniy Dushistov <dushistov@mail.ru>
Cc: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Roger Pau Monne <roger.pau@citrix.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Three types of data need to be protected in the case of the hash types:
a. The hash buckets: standard rcu pointer operations are used.
b. The element blobs in the hash buckets are stored in an array and
a bitmap is used for book-keeping to tell which elements in the array
are used or free.
c. Networks per cidr values and the cidr values themselves are stored
in fix sized arrays and need no protection. The values are modified
in such an order that in the worst case an element testing is repeated
once with the same cidr value.
The ipset hash approach uses arrays instead of lists and therefore is
incompatible with rhashtable.
Performance is tested by Jesper Dangaard Brouer:
Simple drop in FORWARD
~~~~~~~~~~~~~~~~~~~~~~
Dropping via simple iptables net-mask match::
iptables -t raw -N simple || iptables -t raw -F simple
iptables -t raw -I simple -s 198.18.0.0/15 -j DROP
iptables -t raw -D PREROUTING -j simple
iptables -t raw -I PREROUTING -j simple
Drop performance in "raw": 11.3Mpps
Generator: sending 12.2Mpps (tx:12264083 pps)
Drop via original ipset in RAW table
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Create a set with lots of elements::
sudo ./ipset destroy test
echo "create test hash:ip hashsize 65536" > test.set
for x in `seq 0 255`; do
for y in `seq 0 255`; do
echo "add test 198.18.$x.$y" >> test.set
done
done
sudo ./ipset restore < test.set
Dropping via ipset::
iptables -t raw -F
iptables -t raw -N net198 || iptables -t raw -F net198
iptables -t raw -I net198 -m set --match-set test src -j DROP
iptables -t raw -I PREROUTING -j net198
Drop performance in "raw" with ipset: 8Mpps
Perf report numbers ipset drop in "raw"::
+ 24.65% ksoftirqd/1 [ip_set] [k] ip_set_test
- 21.42% ksoftirqd/1 [kernel.kallsyms] [k] _raw_read_lock_bh
- _raw_read_lock_bh
+ 99.88% ip_set_test
- 19.42% ksoftirqd/1 [kernel.kallsyms] [k] _raw_read_unlock_bh
- _raw_read_unlock_bh
+ 99.72% ip_set_test
+ 4.31% ksoftirqd/1 [ip_set_hash_ip] [k] hash_ip4_kadt
+ 2.27% ksoftirqd/1 [ixgbe] [k] ixgbe_fetch_rx_buffer
+ 2.18% ksoftirqd/1 [ip_tables] [k] ipt_do_table
+ 1.81% ksoftirqd/1 [ip_set_hash_ip] [k] hash_ip4_test
+ 1.61% ksoftirqd/1 [kernel.kallsyms] [k] __netif_receive_skb_core
+ 1.44% ksoftirqd/1 [kernel.kallsyms] [k] build_skb
+ 1.42% ksoftirqd/1 [kernel.kallsyms] [k] ip_rcv
+ 1.36% ksoftirqd/1 [kernel.kallsyms] [k] __local_bh_enable_ip
+ 1.16% ksoftirqd/1 [kernel.kallsyms] [k] dev_gro_receive
+ 1.09% ksoftirqd/1 [kernel.kallsyms] [k] __rcu_read_unlock
+ 0.96% ksoftirqd/1 [ixgbe] [k] ixgbe_clean_rx_irq
+ 0.95% ksoftirqd/1 [kernel.kallsyms] [k] __netdev_alloc_frag
+ 0.88% ksoftirqd/1 [kernel.kallsyms] [k] kmem_cache_alloc
+ 0.87% ksoftirqd/1 [xt_set] [k] set_match_v3
+ 0.85% ksoftirqd/1 [kernel.kallsyms] [k] inet_gro_receive
+ 0.83% ksoftirqd/1 [kernel.kallsyms] [k] nf_iterate
+ 0.76% ksoftirqd/1 [kernel.kallsyms] [k] put_compound_page
+ 0.75% ksoftirqd/1 [kernel.kallsyms] [k] __rcu_read_lock
Drop via ipset in RAW table with RCU-locking
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
With RCU locking, the RW-lock is gone.
Drop performance in "raw" with ipset with RCU-locking: 11.3Mpps
Performance-tested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
There's nothing much required because the bitmap types use atomic
bit operations. However the logic of adding elements slightly changed:
first the MAC address updated (which is not atomic), then the element
activated (added). The extensions may call kfree_rcu() therefore we
call rcu_barrier() at module removal.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Replace rwlock_t with spinlock_t in "struct ip_set" and change the locking
accordingly. Convert the comment extension into an rcu-avare object. Also,
simplify the timeout routines.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
There was a small window when all sets are destroyed and a concurrent
listing of all sets could grab a set which is just being destroyed.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
When elements added to a hash:* type of set and resizing triggered,
parallel listing could start to list the original set (before resizing)
and "continue" with listing the new set. Fix it by references and
using the original hash table for listing. Therefore the destroying of
the original hash table may happen from the resizing or listing functions.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Commit "Simplify cidr handling for hash:*net* types" broke the cidr
handling for the hash:*net* types when the sets were used by the SET
target: entries with invalid cidr values were added to the sets.
Reported by Jonathan Johnson.
Testsuite entry is added to verify the fix.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
There is no reason to check CIDR value regardless attribute
specifying CIDR is given.
Initialize cidr array in element structure on element structure
declaration to let more freedom to the compiler to optimize
initialization right before element structure is used.
Remove local variables cidr and cidr2 for netnet and netportnet
hashes as we do not use packed cidr value for such set types and
can store value directly in e.cidr[].
Signed-off-by: Sergey Popovich <popovich_sergei@mail.ua>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Even if we return with generic IPSET_ERR_PROTOCOL it is good idea
to return line number if we called in batch mode.
Moreover we are not always exiting with IPSET_ERR_PROTOCOL. For
example hash:ip,port,net may return IPSET_ERR_HASH_RANGE_UNSUPPORTED
or IPSET_ERR_INVALID_CIDR.
Signed-off-by: Sergey Popovich <popovich_sergei@mail.ua>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Permit userspace to supply CIDR length equal to the host address CIDR
length in netlink message. Prohibit any other CIDR length for IPv6
variant of the set.
Also return -IPSET_ERR_HASH_RANGE_UNSUPPORTED instead of generic
-IPSET_ERR_PROTOCOL in IPv6 variant of hash:ip,port,net when
IPSET_ATTR_IP_TO attribute is given.
Signed-off-by: Sergey Popovich <popovich_sergei@mail.ua>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Make all extensions attributes checks within ip_set_get_extensions()
and reduce number of duplicated code.
Signed-off-by: Sergey Popovich <popovich_sergei@mail.ua>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
This patch removes the warning "space prohibited between
function name and open parenthesis"given by checkpatch.pl
Signed-off-by: Joglekar Tejas <tjogleka@visteon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes the error given by checkpatch.pl
" spaces required around that '>' "
Signed-off-by: Joglekar Tejas <tjogleka@visteon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix the hbm power gating state machine so it will wait till it receives
confirmation interrupt for the PG_ISOLATION_EXIT message.
In process of the suspend flow the devices first have to exit from the
power gating state (runtime pm resume).
If we do not handle the confirmation interrupt after sending
PG_ISOLATION_EXIT message, we may receive it already after the suspend
flow has changed the device state and interrupt will be interpreted as a
spurious event, consequently link reset will be invoked which will
prevent the device from completing the suspend flow
kernel: [6603] mei_reset:136: mei_me 0000:00:16.0: powering down: end of reset
kernel: [476] mei_me_irq_thread_handler:643: mei_me 0000:00:16.0: function called after ISR to handle the interrupt processing.
kernel: mei_me 0000:00:16.0: FW not ready: resetting
Cc: <stable@vger.kernel.org> #3.18+
Cc: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=86241
Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=770397
Tested-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The FW resets the flow control for single buffer clients when the last
host client disconnects, also the driver has to follow this policy and
zero the flow control counter in such case.
Cc: <stable@vger.kernel.org> #4.1
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Typo in a comment to register write corrected.
Signed-off-by: Anton Gerasimov <anton.gerasimov@openmailbox.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Added spaces after commas in initialization sequences and removed
unnecessary line continuations.
Signed-off-by: Anton Gerasimov <anton.gerasimov@openmailbox.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Placed comments to register writes before the function calls to
eliminate long strings and make code more readable.
Signed-off-by: Anton Gerasimov <anton.gerasimov@openmailbox.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eliminated code duplication when searching for a display.
Signed-off-by: Anton Gerasimov <anton.gerasimov@openmailbox.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The patch removes spaces before tabs so that checkpatch.pl is content.
Signed-off-by: Anton Gerasimov <anton.gerasimov@openmailbox.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
