Christoph Lameter bc3e53f682 mm: distinguish between mlocked and pinned pages ... Some kernel components pin user space memory (infiniband and perf) (by increasing the page count) and account that memory as "mlocked". The difference between mlocking and pinning is: A. mlocked pages are marked with PG_mlocked and are exempt from swapping. Page migration may move them around though. They are kept on a special LRU list. B. Pinned pages cannot be moved because something needs to directly access physical memory. They may not be on any LRU list. I recently saw an mlockalled process where mm->locked_vm became bigger than the virtual size of the process (!) because some memory was accounted for twice: Once when the page was mlocked and once when the Infiniband layer increased the refcount because it needt to pin the RDMA memory. This patch introduces a separate counter for pinned pages and accounts them seperately. Signed-off-by: Christoph Lameter <cl@linux.com> Cc: Mike Marciniszyn <infinipath@qlogic.com> Cc: Roland Dreier <roland@kernel.org> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-10-31 17:30:46 -07:00
..
accessibility
acpi	Merge branch 'next-rebase' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2011-10-28 14:20:44 -07:00
amba
ata	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2011-10-28 16:44:18 -07:00
atm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2011-10-25 13:25:22 +02:00
auxdisplay
base	Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm	2011-10-25 15:18:39 +02:00
bcma
block	Merge branch 'for-linus' of git://ceph.newdream.net/git/ceph-client	2011-10-28 16:42:18 -07:00
bluetooth	Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm	2011-10-25 15:18:39 +02:00
cdrom
char	Merge branch 'drm-core-next' of git://people.freedesktop.org/~airlied/linux	2011-10-28 05:54:23 -07:00
clk
clocksource	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2011-10-26 17:15:03 +02:00
connector
cpufreq	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2011-10-26 17:15:03 +02:00
cpuidle
crypto
dca
devfreq
dio
dma
edac
eisa
firewire
firmware
gpio	Merge branch 'gpio/next' of git://git.secretlab.ca/git/linux-2.6	2011-10-29 07:27:45 -07:00
gpu	Merge branch 'drm-core-next' of git://people.freedesktop.org/~airlied/linux	2011-10-28 05:54:23 -07:00
hid	Merge branch 'next' into for-linus	2011-10-26 21:46:20 -07:00
hv
hwmon	Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2011-10-28 05:14:48 -07:00
hwspinlock
i2c	i2c-algo-pca: Return standard fault codes	2011-10-30 13:47:25 +01:00
ide	Merge branch 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm	2011-10-27 08:39:10 +02:00
idle
ieee802154
infiniband	mm: distinguish between mlocked and pinned pages	2011-10-31 17:30:46 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound	2011-10-28 14:25:01 -07:00
iommu	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu	2011-10-30 15:46:19 -07:00
isdn	Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty	2011-10-26 15:11:09 +02:00
leds	Merge branch 'x86-geode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2011-10-28 05:04:26 -07:00
lguest	lguest: move process freezing before pending signals check	2011-10-27 10:56:18 +10:30
macintosh
mca
md	Merge branch 'for-linus' of git://neil.brown.name/md	2011-10-31 15:21:29 -07:00
media	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu	2011-10-30 15:46:19 -07:00
memstick
message
mfd	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound	2011-10-28 14:25:01 -07:00
misc	Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core	2011-10-25 12:13:59 +02:00
mmc	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc	2011-10-28 14:16:11 -07:00
mtd	Merge branch 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm	2011-10-27 08:39:10 +02:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2011-10-31 15:22:44 -07:00
nfc
nubus
of	of_mdio: Don't phy_scan_fixups() twice	2011-10-25 06:55:52 +02:00
oprofile
parisc
parport
pci	Merge branch 'next-rebase' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2011-10-28 14:20:44 -07:00
pcmcia	Merge branch 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm	2011-10-27 08:39:10 +02:00
pinctrl	pinctrl/sirf: fix sirfsoc_get_group_pins prototype	2011-10-25 10:43:57 +02:00
platform
pnp
power
pps
ps3
ptp
rapidio
regulator
rtc
s390	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2011-10-28 16:44:18 -07:00
sbus
scsi	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2011-10-28 16:44:18 -07:00
sfi
sh
sn
spi	Merge branch 'spi/next' of git://git.secretlab.ca/git/linux-2.6	2011-10-29 07:28:36 -07:00
ssb
staging	Merge branch 'fbdev-next' of git://github.com/schandinat/linux-2.6	2011-10-30 15:30:01 -07:00
target	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-10-25 12:11:02 +02:00
tc
telephony
thermal
tty	Merge branch 'spi/next' of git://git.secretlab.ca/git/linux-2.6	2011-10-29 07:28:36 -07:00
uio
usb	Merge branch 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm	2011-10-28 12:02:27 -07:00
uwb
vhost
video	Merge branch 'fbdev-next' of git://github.com/schandinat/linux-2.6	2011-10-30 15:30:01 -07:00
virt
virtio	Add ethtool -g support to virtio_net	2011-10-24 02:07:21 -04:00
vlynq
w1
watchdog	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2011-10-26 17:03:38 +02:00
xen	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2011-10-26 16:44:09 +02:00
zorro	zorro: Fix four checkpatch warnings	2011-10-24 21:00:34 +02:00
Kconfig	Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging	2011-10-26 15:39:02 +02:00
Makefile	Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging	2011-10-26 15:39:02 +02:00