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Eric Dumazet 4ffdd22e49 tun: remove possible false sharing in tun_flow_update() 
As mentioned in https://github.com/google/ktsan/wiki/READ_ONCE-and-WRITE_ONCE#it-may-improve-performance
a C compiler can legally transform

if (e->queue_index != queue_index)
	e->queue_index = queue_index;

to :

	e->queue_index = queue_index;

Note that the code using jiffies has no issue, since jiffies
has volatile attribute.

if (e->updated != jiffies)
    e->updated = jiffies;

Fixes: 83b1bc122cab ("tun: align write-heavy flow entry members to a cache line")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Zhang Yu <zhangyu31@baidu.com>
Cc: Wang Li <wangli39@baidu.com>
Cc: Li RongQing <lirongqing@baidu.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
2019-10-09 21:29:33 -07:00
..
accessibility
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acpi
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
amba
ARM updates for 5.4-rc1:
2019-09-22 09:39:09 -07:00
android
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ata
ata: libahci_platform: Add of_node_put() before loop exit
2019-09-19 12:21:44 -06:00
atm
atm: he: clean up an indentation issue
2019-09-25 13:54:45 +02:00
auxdisplay
It's a somewhat calmer cycle for docs this time, as the churn of the mass
2019-09-17 16:22:26 -07:00
base
mm,thp: stats for file backed THP
2019-09-24 15:54:11 -07:00
bcma
bcma: make arrays pwr_info_offset and sprom_sizes static const, shrinks object size
2019-09-13 16:44:49 +03:00
block
for-linus-2019-10-03
2019-10-04 09:56:51 -07:00
bluetooth
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-15 14:17:27 +02:00
bus
ARM: SoC fixes
2019-09-30 10:04:28 -07:00
cdrom
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char
char/random: Add a newline at the end of the file
2019-10-02 13:49:43 -07:00
clk
ARM SCMI fixes for v5.4
2019-09-29 11:20:41 -07:00
clocksource
timer-of: don't use conditional expression with mixed 'void' types
2019-10-02 16:16:07 -07:00
connector
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counter
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cpufreq
Power management updates for 5.4-rc1
2019-09-17 19:15:14 -07:00
cpuidle
Power management updates for 5.4-rc1
2019-09-17 19:15:14 -07:00
crypto
Merge branch 'akpm' (patches from Andrew)
2019-09-24 16:10:23 -07:00
dax
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dca
…
devfreq
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dio
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dma
Main MIPS changes for v5.4:
2019-09-22 09:30:30 -07:00
dma-buf
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edac
ARM updates for 5.4-rc1:
2019-09-22 09:39:09 -07:00
eisa
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extcon
chrome platform changes for v5.4
2019-09-19 14:14:28 -07:00
firewire
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firmware
ARM: SoC fixes
2019-09-30 10:04:28 -07:00
fpga
Char/Misc driver patches for 5.4-rc1
2019-09-18 11:14:31 -07:00
fsi
…
gnss
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gpio
pwm: Changes for v5.4-rc1
2019-09-27 12:19:47 -07:00
gpu
- Fix DP-MST crtc_mask
2019-10-04 16:31:06 +10:00
greybus
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hid
- First round of vmbus hibernation support from Dexuan Cui.
2019-09-24 12:36:31 -07:00
hsi
HSI changes for the 5.4 series
2019-09-22 12:02:21 -07:00
hv
- First round of vmbus hibernation support from Dexuan Cui.
2019-09-24 12:36:31 -07:00
hwmon
ARM SCMI fixes for v5.4
2019-09-29 11:20:41 -07:00
hwspinlock
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hwtracing
Char/Misc driver patches for 5.4-rc1
2019-09-18 11:14:31 -07:00
i2c
i2c: slave-eeprom: Add read only mode
2019-09-28 20:44:12 +02:00
i3c
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ide
…
idle
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iio
chrome platform changes for v5.4
2019-09-19 14:14:28 -07:00
infiniband
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-28 17:47:33 -07:00
input
chrome platform changes for v5.4
2019-09-19 14:14:28 -07:00
interconnect
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iommu
IOMMU Fixes for Linux v5.4-rc1
2019-09-29 10:00:14 -07:00
ipack
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irqchip
Main MIPS changes for v5.4:
2019-09-22 09:30:30 -07:00
isdn
mISDN: enforce CAP_NET_RAW for raw sockets
2019-09-24 16:37:18 +02:00
leds
leds: lm3532: Fix optional led-max-microamp prop error handling
2019-09-12 20:45:52 +02:00
lightnvm
lightnvm: print error when target is not found
2019-09-05 13:17:01 -06:00
macintosh
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mailbox
mailbox: qcom-apcs: fix max_register value
2019-09-17 00:54:29 -05:00
mcb
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md
for-5.4/post-2019-09-24
2019-09-24 16:31:50 -07:00
media
media/v4l2-core: untag user pointers in videobuf_dma_contig_user_get
2019-09-25 17:51:41 -07:00
memory
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memstick
ms_block: fix spelling mistake "randomally" -> "randomly"
2019-09-11 16:11:01 +02:00
message
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mfd
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
2019-09-29 10:24:23 -07:00
misc
Merge branch 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2019-09-24 16:48:02 -07:00
mmc
mmc: host: sdhci-pci: Add Genesys Logic GL975x support
2019-09-27 20:48:20 +02:00
mtd
Main MIPS changes for v5.4:
2019-09-22 09:30:30 -07:00
mux
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net
tun: remove possible false sharing in tun_flow_update()
2019-10-09 21:29:33 -07:00
nfc
NFC: pn533: fix use-after-free and memleaks
2019-10-08 16:52:26 -07:00
ntb
NTB: fix IDT Kconfig typos/spellos
2019-09-23 17:20:40 -04:00
nubus
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nvdimm
libnvdimm fixes v5.4-rc1
2019-09-29 10:33:41 -07:00
nvme
Merge branch 'nvme-5.4' of git://git.infradead.org/nvme into for-linus
2019-09-27 13:17:37 -06:00
nvmem
Char/Misc driver patches for 5.4-rc1
2019-09-18 11:14:31 -07:00
of
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-28 17:47:33 -07:00
opp
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oprofile
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parisc
dma-mapping updates for 5.4:
2019-09-19 13:27:23 -07:00
parport
Char/Misc driver patches for 5.4-rc1
2019-09-18 11:14:31 -07:00
pci
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
pcmcia
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
perf
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phy
pci-v5.4-changes
2019-09-23 19:16:01 -07:00
pinctrl
This is the bulk of pin control changes for the v5.4 kernel
2019-09-19 14:19:33 -07:00
platform
platform-drivers-x86 for v5.4-2
2019-09-24 12:39:40 -07:00
pnp
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power
power supply and reset changes for the v5.4 series
2019-09-22 12:04:59 -07:00
powercap
Power management updates for 5.4-rc1
2019-09-17 19:15:14 -07:00
pps
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ps3
…
ptp
ptp: fix typo of "mechanism" in Kconfig help text
2019-10-07 14:55:46 -04:00
pwm
pwm: Changes for v5.4-rc1
2019-09-27 12:19:47 -07:00
rapidio
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ras
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regulator
LED updates for 5.4-rc1
2019-09-17 18:40:42 -07:00
remoteproc
remoteproc updates for v5.4
2019-09-22 10:55:08 -07:00
reset
ARM: SoC fixes
2019-09-30 10:04:28 -07:00
rpmsg
rpmsg: glink-smem: Name the edge based on parent remoteproc
2019-09-17 15:33:31 -07:00
rtc
RTC for 5.4
2019-09-22 11:05:43 -07:00
s390
s390/qeth: Fix initialization of vnicc cmd masks during set online
2019-10-09 17:55:24 -07:00
sbus
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scsi
SCSI fixes on 20191004
2019-10-05 12:53:27 -07:00
sfi
…
sh
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siox
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slimbus
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soc
ARM: SoC driver updates for v5.4
2019-09-16 15:52:38 -07:00
soundwire
soundwire updates for v5.4-rc1
2019-09-22 10:52:23 -07:00
spi
LED updates for 5.4-rc1
2019-09-17 18:40:42 -07:00
spmi
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ssb
ssb: make array pwr_info_offset static const, makes object smaller
2019-09-13 17:23:18 +03:00
staging
netfilter: drop bridge nf reset from nf_reset
2019-10-01 18:42:15 +02:00
target
mm: introduce page_size()
2019-09-24 15:54:08 -07:00
tc
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tee
tee/shm: untag user pointers in tee_shm_register
2019-09-25 17:51:41 -07:00
thermal
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
2019-09-29 10:24:23 -07:00
thunderbolt
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tty
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
uio
Char/Misc driver patches for 5.4-rc1
2019-09-18 11:14:31 -07:00
usb
Merge branch 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-09-24 12:33:34 -07:00
vfio
vfio/type1: untag user pointers in vaddr_get_pfn
2019-09-25 17:51:41 -07:00
vhost
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-15 14:17:27 +02:00
video
video/logo: do not generate unneeded logo C files
2019-10-05 15:29:49 +09:00
virt
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virtio
virtio_ring: fix unmap of indirect descriptors
2019-09-09 10:43:15 -04:00
visorbus
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vlynq
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vme
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w1
w1: add DS2501, DS2502, DS2505 EPROM device driver
2019-09-04 14:34:31 +02:00
watchdog
linux-watchdog 5.4-rc1 tag
2019-09-27 11:17:38 -07:00
xen
xen: fixes and cleanups for 5.4-rc2
2019-10-04 11:13:09 -07:00
zorro
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Kconfig
Staging/IIO driver patches for 5.4-rc1
2019-09-18 11:05:34 -07:00
Makefile
Staging/IIO driver patches for 5.4-rc1
2019-09-18 11:05:34 -07:00