linux/drivers
Linus Torvalds b0b885657b tty: fix up atime/mtime mess, take three
We first tried to avoid updating atime/mtime entirely (commit
b0de59b573: "TTY: do not update atime/mtime on read/write"), and then
limited it to only update it occasionally (commit 37b7f3c765: "TTY:
fix atime/mtime regression"), but it turns out that this was both
insufficient and overkill.

It was insufficient because we let people attach to the shared ptmx node
to see activity without even reading atime/mtime, and it was overkill
because the "only once a minute" means that you can't really tell an
idle person from an active one with 'w'.

So this tries to fix the problem properly.  It marks the shared ptmx
node as un-notifiable, and it lowers the "only once a minute" to a few
seconds instead - still long enough that you can't time individual
keystrokes, but short enough that you can tell whether somebody is
active or not.

Reported-by: Simon Kirby <sim@hostway.ca>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-01 07:32:21 -07:00
..
accessibility
acpi Power management and ACPI updates for 3.10-rc1 2013-04-30 15:21:02 -07:00
amba
ata 1) More ACPI fixes, cleanups 2013-04-30 16:13:36 -07:00
atm
auxdisplay
base Power management and ACPI updates for 3.10-rc1 2013-04-30 15:21:02 -07:00
bcma
block aoe: replace kmalloc and then memcpy with kmemdup 2013-04-30 17:04:08 -07:00
bluetooth
bus
cdrom
char Merge branch 'akpm' (incoming from Andrew) 2013-04-30 17:37:43 -07:00
clk Power management and ACPI updates for 3.10-rc1 2013-04-30 15:21:02 -07:00
clocksource Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-04-30 08:15:40 -07:00
connector
cpufreq Merge branch 'pm-cpufreq' 2013-04-29 00:08:46 +02:00
cpuidle cpuidle: add maintainer entry 2013-04-26 22:30:25 +02:00
crypto Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
dca
devfreq
dio
dma dmaengine: at_hdmac: fix race condition in atc_advance_work() 2013-04-18 08:54:22 -07:00
edac Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac 2013-04-30 10:00:49 -07:00
eisa PCI changes for the v3.10 merge window: 2013-04-29 09:30:25 -07:00
extcon
firewire
firmware dmi_scan: refactor dmi_scan_machine(), {smbios,dmi}_present() 2013-04-30 17:04:04 -07:00
gpio These are the pinctrl changes for v3.10: 2013-04-29 09:40:35 -07:00
gpu Power management and ACPI updates for 3.10-rc1 2013-04-30 15:21:02 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2013-04-30 09:37:55 -07:00
hsi
hv Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-04-30 08:41:21 -07:00
hwmon Highlights: 2013-04-30 15:15:24 -07:00
hwspinlock
i2c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
ide
idle Merge branch 'pm-cpuidle' 2013-04-28 01:54:49 +02:00
iio
infiniband Merge branch 'for-next-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-04-30 13:14:57 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-04-19 09:15:13 -07:00
iommu Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-04-30 08:40:35 -07:00
ipack
irqchip Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
isdn Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
leds
lguest lguest: rename random32() to prandom_u32() 2013-04-29 18:28:43 -07:00
macintosh
mailbox
md MD: ignore discard request for hard disks of hybid raid1/raid10 array 2013-04-30 14:49:36 +10:00
media Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2013-04-30 09:58:16 -07:00
memory
memstick drivers/memstick/host/r592.c: make r592_pm_ops static 2013-04-30 17:04:08 -07:00
message i2o: check copy_from_user() size parameter 2013-04-30 17:04:04 -07:00
mfd Highlights: 2013-04-30 15:15:24 -07:00
misc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
mmc mmc: rename random32() to prandom_u32() 2013-04-29 18:28:42 -07:00
mtd mtdchar: remove no-longer-used vma helpers 2013-04-19 10:05:39 -07:00
net ethernet/emac/sysrq: fix inconstistent help message of sysrq key 2013-04-30 17:04:10 -07:00
nfc
ntb
nubus
of [media] DT: export of_get_next_parent() for use by modules: fix modular V4L2 2013-04-17 12:28:57 -03:00
oprofile
parisc
parport
pci PCI changes for the v3.10 merge window: 2013-04-29 09:30:25 -07:00
pcmcia
pinctrl pinctrl: move subsystem mutex to pinctrl_dev struct 2013-04-26 17:01:35 +02:00
platform Merge branch 'acpica' 2013-04-28 01:53:50 +02:00
pnp Merge branch 'pnp' 2013-04-28 01:54:41 +02:00
power Highlights: 2013-04-30 15:15:24 -07:00
pps pps: pps_kc_hardpps_lock can be static 2013-04-30 17:04:08 -07:00
ps3
ptp
pwm
rapidio
regulator Merge remote-tracking branch 'regulator/topic/wm8994' into v3.9-rc8 2013-04-28 02:13:50 +01:00
remoteproc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
rpmsg drivers/rpmsg/virtio_rpmsg_bus.c: fix error return code in rpmsg_probe() 2013-04-29 18:28:13 -07:00
rtc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
s390 TTY/Serial driver update for 3.10-rc1 2013-04-29 12:16:17 -07:00
sbus
scsi SCSI misc on 20130430 2013-04-30 13:16:38 -07:00
sfi
sh
sn
spi spi: Updates for v3.10 2013-04-29 16:38:41 -07:00
ssb ssb: implement spurious tone avoidance 2013-04-10 10:31:26 -04:00
ssbi
staging staging: speakup: remove custom string_unescape_any_inplace 2013-04-30 17:04:03 -07:00
target tcm_fc: Check for aborted sequence 2013-04-25 01:05:28 -07:00
tc
thermal
tty tty: fix up atime/mtime mess, take three 2013-05-01 07:32:21 -07:00
uio
usb drivers/usb/storage/realtek_cr.c: fix build 2013-04-30 17:04:00 -07:00
uwb uwb: rename random32() to prandom_u32() 2013-04-29 18:28:43 -07:00
vfio PCI changes for the v3.10 merge window: 2013-04-29 09:30:25 -07:00
vhost Merge branch 'for-next-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-04-30 13:14:57 -07:00
video Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
virt
virtio
vlynq
vme
w1 drivers/w1/slaves/w1_ds2760.c: fix the error handling in w1_ds2760_add_slave() 2013-04-30 17:04:08 -07:00
watchdog watchdog: Revert the AT91RM9200_WATCHDOG dependency 2013-04-14 09:09:10 +02:00
xen zcache/tmem: Better error checking on frontswap_register_ops return value. 2013-04-30 17:04:01 -07:00
zorro
Kconfig kconfig menu: move Virtualization drivers near other virtualization options 2013-04-30 17:04:09 -07:00
Makefile USB patches for 3.10-rc1 2013-04-29 12:19:23 -07:00