Michal Hocko 9a5a8f19b4 memcg: oom: fix totalpages calculation for memory.swappiness==0 ... oom_badness() takes a totalpages argument which says how many pages are available and it uses it as a base for the score calculation. The value is calculated by mem_cgroup_get_limit which considers both limit and total_swap_pages (resp. memsw portion of it). This is usually correct but since fe35004fbf ("mm: avoid swapping out with swappiness==0") we do not swap when swappiness is 0 which means that we cannot really use up all the totalpages pages. This in turn confuses oom score calculation if the memcg limit is much smaller than the available swap because the used memory (capped by the limit) is negligible comparing to totalpages so the resulting score is too small if adj!=0 (typically task with CAP_SYS_ADMIN or non zero oom_score_adj). A wrong process might be selected as result. The problem can be worked around by checking mem_cgroup_swappiness==0 and not considering swap at all in such a case. Signed-off-by: Michal Hocko <mhocko@suse.cz> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-11-16 14:33:04 -08:00
..
ABI	SCSI misc on 20121012	2012-10-13 10:57:01 +09:00
accounting	doc: getdelays.c: remember to close() socket on error in create_nl_socket()	2012-09-01 09:58:59 -07:00
acpi
aoe	aoe: update documentation to better reflect aoe-plus-udev usage	2012-10-06 03:05:30 +09:00
arm	Merge branch 'fixes' into for-linus	2012-10-11 10:55:04 +01:00
arm64	arm64: Move PCI_IOBASE closer to MODULES_VADDR	2012-10-23 15:30:51 +01:00
auxdisplay
backlight
blackfin
block	block: Kill bi_destructor	2012-09-09 10:35:39 +02:00
blockdev
cdrom
cgroups	memcg: oom: fix totalpages calculation for memory.swappiness==0	2012-11-16 14:33:04 -08:00
connector
console
cpu-freq	acpi-cpufreq: Add support for disabling dynamic overclocking	2012-09-09 22:05:12 +02:00
cpuidle	Honor state disabling in the cpuidle ladder governor	2012-09-04 01:35:44 +02:00
cris
crypto	KEYS: Document asymmetric key type	2012-10-08 13:50:12 +10:30
development-process
device-mapper	DM RAID: Add rebuild capability for RAID10	2012-10-11 13:40:24 +11:00
devicetree	Linux 3.7-rc3	2012-10-30 00:09:18 -07:00
DocBook	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-10-18 16:10:42 -07:00
driver-model	pwm: add devm_pwm_get() and devm_pwm_put()	2012-09-10 17:05:45 +02:00
dvb	get_dvb_firmware: fix download site for tda10046 firmware	2012-09-28 16:16:00 -03:00
early-userspace
EDID
extcon
fault-injection	fault-injection: add tool to run command with failslab or fail_page_alloc	2012-07-30 17:25:22 -07:00
fb
filesystems	Merge branch 'for-3.7' of git://linux-nfs.org/~bfields/linux	2012-10-13 10:53:54 +09:00
firmware_class	firmware loader: document kernel direct loading	2012-10-25 11:53:36 -07:00
frv
hid	HID: sensors: add documentation	2012-09-06 19:11:04 +01:00
hwmon	hwmon, fam15h_power: Change email address, MAINTAINERS entry	2012-10-29 17:48:01 -07:00
i2c	i2c-mux-gpio: Update documentation	2012-10-05 22:23:54 +02:00
i2o
ia64	doc: aliasing-test: close fd on write error	2012-09-01 09:57:10 -07:00
ide
infiniband	IB/ipoib: Add rtnl_link_ops support	2012-09-20 16:49:17 -04:00
input
ioctl	ioctl-number.txt: Remove legacy private ioctl's from media drivers	2012-08-14 00:07:39 -03:00
isdn
ja_JP
kbuild	UAPI: Remove the objhdr-y export list	2012-10-02 18:01:56 +01:00
kdump
ko_KR
laptops	Documentation: fix the VM knobs descritpion WRT pdflush	2012-08-04 12:15:09 +04:00
leds	leds-lp5523: add channel name in the platform data	2012-09-11 18:32:41 +08:00
m68k
make
memory-devices
mips
misc-devices	lis3lv02d: Add STMicroelectronics lis331dlh digital accelerometer	2012-09-05 13:44:04 -07:00
mmc
mn10300
mtd
namespaces
netlabel
networking	vxlan: virtual extensible lan	2012-10-01 18:39:45 -04:00
nfc
parisc
PCI
pcmcia
power	1. New drivers:	2012-10-07 17:29:24 +09:00
powerpc
pps
prctl
pti
ptp
rapidio
RCU	Merge branches 'bigrt.2012.09.23a', 'doctorture.2012.09.23a', 'fixes.2012.09.23a', 'hotplug.2012.09.23a' and 'idlechop.2012.09.23a' into HEAD	2012-09-24 20:02:22 -07:00
s390
scheduler	sched: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW	2012-09-13 16:52:04 +02:00
scsi	[SCSI] megaraid_sas: Version, Changelog, Copyright update	2012-10-09 11:21:48 +01:00
security	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
serial	firmware: remove computone driver firmware and documentation	2012-08-16 12:31:18 -07:00
sh
sound	Merge branch 'topic/tlv-chmap' into for-next	2012-09-15 16:32:31 +02:00
spi	spi: Updates for v3.7	2012-10-02 17:26:42 -07:00
sysctl	coredump: add support for %d=__get_dumpable() in core name	2012-10-06 03:05:15 +09:00
target	target: Simplify fabric sense data length handling	2012-09-17 17:12:58 -07:00
telephony
thermal	hwmon: exynos4: move thermal sensor driver to driver/thermal directory	2012-09-24 14:44:38 +08:00
timers
trace	doc: fix old config name of kprobetrace	2012-09-27 12:11:29 +02:00
usb	usb: add decriptor of persist fail for some morph usb devices	2012-08-10 12:06:39 -07:00
vDSO
video4linux	[media] media: v4l2-ctrl: add a helper function to add standard control with driver specific menu	2012-10-05 21:48:03 -03:00
virtual	Merge branch 'for-linus-37rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml	2012-10-10 11:15:20 +09:00
vm	mm: remove vma arg from page_evictable	2012-10-09 16:22:55 +09:00
w1	1-Wire: Add support for the maxim ds1825 temperature sensor	2012-08-16 12:33:59 -07:00
watchdog	watchdog: fix watchdog-test.c build warning	2012-08-29 17:12:58 +02:00
wimax
x86	x86/mce: Provide boot argument to honour bios-set CMCI threshold	2012-09-27 10:08:00 -07:00
zh_CN	Documentation:Chinese translation of Documentation/arm64/memory.txt	2012-10-25 11:54:06 -07:00
.gitignore
00-INDEX	Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-10-24 04:07:02 +03:00
applying-patches.txt
atomic_ops.txt
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt
Changes
circular-buffers.txt
clk.txt
coccinelle.txt
CodingStyle	CodingStyle: add networking specific block comment style	2012-10-06 03:04:59 +09:00
cpu-hotplug.txt
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt
digsig.txt
DMA-API-HOWTO.txt
DMA-API.txt
DMA-attributes.txt	common: DMA-mapping: add DMA_ATTR_SKIP_CPU_SYNC attribute	2012-07-30 12:25:47 +02:00
dma-buf-sharing.txt
DMA-ISA-LPC.txt
dmaengine.txt
dontdiff	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-10-01 09:06:36 -07:00
dynamic-debug-howto.txt
edac.txt	Merge branch 'devel'	2012-07-29 21:11:05 -03:00
eisa.txt
email-clients.txt
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gpio.txt
highuid.txt
HOWTO
hw_random.txt
hwspinlock.txt
init.txt
initrd.txt
Intel-IOMMU.txt
intel_txt.txt
io-mapping.txt
io_ordering.txt
iostats.txt
IPMI.txt	IPMI: Remove SMBus driver info from the docs	2012-10-16 18:07:12 -07:00
IRQ-affinity.txt
IRQ-domain.txt
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt
kernel-docs.txt
kernel-parameters.txt	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
kmemcheck.txt
kmemleak.txt
kobject.txt	Documentation: Fix "struct kobj_type" to include newer members.	2012-09-04 16:06:34 -07:00
kprobes.txt
kref.txt
ldm.txt
local_ops.txt
lockdep-design.txt
lockstat.txt
lockup-watchdogs.txt
logo.gif
logo.txt
magic-number.txt
Makefile
ManagementStyle
md.txt
media-framework.txt
memory-barriers.txt
memory-hotplug.txt
mono.txt
mutex-design.txt
nommu-mmap.txt
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
percpu-rw-semaphore.txt	percpu-rw-semaphore: fix documentation typos	2012-09-26 19:56:15 +02:00
pi-futex.txt
pinctrl.txt	pinctrl: document semantics vs GPIO	2012-09-17 10:53:57 +02:00
pnp.txt
preempt-locking.txt
printk-formats.txt	lib/vsprintf: update documentation to cover all of %p[Mm][FR]	2012-10-06 03:04:50 +09:00
pwm.txt	pwm: add devm_pwm_get() and devm_pwm_put()	2012-09-10 17:05:45 +02:00
ramoops.txt	pstore/ftrace: Convert to its own enable/disable debugfs knob	2012-09-06 22:16:58 -07:00
rbtree.txt	rbtree: move augmented rbtree functionality to rbtree_augmented.h	2012-10-09 16:22:40 +09:00
remoteproc.txt	remoteproc: add rproc_report_crash function to notify rproc crashes	2012-09-18 12:53:22 +03:00
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
rt-mutex-design.txt
rt-mutex.txt
rtc.txt	rtc-proc: permit the /proc/driver/rtc device to use other devices	2012-10-06 03:05:01 +09:00
SAK.txt
SecurityBugs
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
smsc_ece1099.txt	mfd: smsc: Add support for smsc gpio io/keypad driver	2012-10-01 15:27:48 +02:00
sparse.txt
spinlocks.txt
stable_api_nonsense.txt
stable_kernel_rules.txt
static-keys.txt
SubmitChecklist
SubmittingDrivers
SubmittingPatches
svga.txt
sysfs-rules.txt
sysrq.txt	sparc64: Add global PMU register dumping via sysrq.	2012-10-16 09:34:01 -07:00
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt	vfio: Trivial Documentation correction	2012-09-21 10:48:03 -06:00
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
vme_api.txt
volatile-considered-harmful.txt
workqueue.txt
xz.txt
zorro.txt