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Joonsoo Kim fe896d1878 mm: introduce page reference manipulation functions 
The success of CMA allocation largely depends on the success of
migration and key factor of it is page reference count.  Until now, page
reference is manipulated by direct calling atomic functions so we cannot
follow up who and where manipulate it.  Then, it is hard to find actual
reason of CMA allocation failure.  CMA allocation should be guaranteed
to succeed so finding offending place is really important.

In this patch, call sites where page reference is manipulated are
converted to introduced wrapper function.  This is preparation step to
add tracepoint to each page reference manipulation function.  With this
facility, we can easily find reason of CMA allocation failure.  There is
no functional change in this patch.

In addition, this patch also converts reference read sites.  It will
help a second step that renames page._count to something else and
prevents later attempt to direct access to it (Suggested by Andrew).

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2016-03-17 15:09:34 -07:00
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accessibility
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acpi libnvdimm for 4.6 2016-03-16 17:45:56 -07:00
amba
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android drivers: android: correct the size of struct binder_uintptr_t for BC_DEAD_BINDER_DONE 2016-02-20 15:43:56 -08:00
ata PCI changes for the v4.6 merge window: 2016-03-16 14:45:55 -07:00
atm atm: solos-pci: use to_pci_dev() 2015-12-29 15:32:24 -05:00
auxdisplay
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base Power management and ACPI material for v4.6-rc1, part 1 2016-03-16 14:10:53 -07:00
bcma GPIO bulk updates for the v4.5 kernel cycle: 2016-01-17 12:32:01 -08:00
block mm: introduce page reference manipulation functions 2016-03-17 15:09:34 -07:00
bluetooth Bluetooth: btmrvl: don't send data to firmware while processing suspend 2016-01-06 16:37:14 +01:00
bus vexpress fixes for v4.5 2016-02-01 12:27:18 -08:00
cdrom cdrom: don't open-code memdup_user() 2016-01-06 08:25:24 -05:00
char PCI changes for the v4.6 merge window: 2016-03-16 14:45:55 -07:00
clk clk: ti: omap3+: dpll: use non-locking version of clk_get_rate 2016-02-22 14:03:02 -08:00
clocksource One of the largest releases for KVM... Hardly any generic improvement, 2016-03-16 09:55:35 -07:00
connector connector: bump skb->users before callback invocation 2016-01-04 21:46:45 -05:00
cpufreq Merge branch 'pm-cpufreq' 2016-03-14 14:22:03 +01:00
cpuidle cpuidle: menu: help gcc generate slightly better code 2016-02-17 00:28:15 +01:00
crypto crypto: marvell/cesa - fix test in mv_cesa_dev_dma_init() 2016-02-06 15:23:56 +08:00
dca
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devfreq PM / devfreq: tegra: Set freq in rate callback 2016-02-23 14:27:42 +09:00
dio
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dma Merge branch 'mm-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-14 16:31:41 -07:00
dma-buf
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edac EDAC queue for 4.6 2016-03-16 08:36:55 -07:00
eisa
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extcon
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firewire
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firmware drivers/firmware/broadcom/bcm47xx_nvram.c: fix incorrect __ioread32_copy 2016-03-17 15:09:34 -07:00
fmc
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fpga
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gpio gpio: rcar: Add Runtime PM handling for interrupts 2016-02-25 15:46:27 +01:00
gpu PCI changes for the v4.6 merge window: 2016-03-16 14:45:55 -07:00
hid asm-generic changes for 4.5 2016-01-20 17:30:20 -08:00
hsi HSI: omap_ssi_port: fix handling of_get_named_gpio result 2016-01-07 16:07:54 +01:00
hv drivers/hv: Move VMBus hypercall codes into Hyper-V UAPI header 2016-02-16 18:48:40 +01:00
hwmon hwmon: Create an NSA320 hardware monitoring driver 2016-03-08 18:40:49 -08:00
hwspinlock drivers/hwspinlock: fix race between radix tree insertion and lookup 2016-02-03 08:28:43 -08:00
hwtracing
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i2c i2c: designware: Add device HID for future AMD I2C controller 2016-03-10 21:34:47 +01:00
ide PCI: Remove includes of asm/pci-bridge.h 2016-02-05 16:29:28 -06:00
idle
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iio Second set of IIO fixes for the 4.5 cycle. These ones are mostly 2016-02-01 13:08:26 -08:00
infiniband Additional 4.5-rc6 fixes 2016-03-04 18:06:49 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-02-10 12:21:57 -08:00
iommu iommu/vt-d: Use BUS_NOTIFY_REMOVED_DEVICE in hotplug path 2016-02-29 23:55:16 +01:00
ipack
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irqchip irqchip/irq-alpine-msi: Release the correct domain on error 2016-03-11 10:06:55 +01:00
isdn ser_gigaset: use container_of() instead of detour 2016-02-19 15:52:41 -05:00
leds leds: triggers: simplify led_trigger_store 2016-03-14 09:22:23 +01:00
lguest lguest: Map switcher text R/O 2016-01-12 12:17:28 +01:00
lightnvm lightnvm: allow to force mm initialization 2016-02-04 09:19:45 -07:00
macintosh PCI: Remove includes of asm/pci-bridge.h 2016-02-05 16:29:28 -06:00
mailbox Merge branches 'acpi-processor' and 'acpi-cppc' 2016-03-14 14:20:33 +01:00
mcb
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md dm: fix rq_end_stats() NULL pointer in dm_requeue_original_request() 2016-03-14 17:04:34 -04:00
media media updates for v4.6-rc1 2016-03-16 18:27:32 -07:00
memory ARM: SoC driver updates for v4.5 2016-01-20 18:42:30 -08:00
memstick memstick: use sector_div instead of do_div 2016-01-20 17:09:18 -08:00
message mptbase: fixup error handling paths in mpt_attach() 2016-02-23 21:27:02 -05:00
mfd RTC for 4.6 2016-03-15 21:58:58 -07:00
misc PCI changes for the v4.6 merge window: 2016-03-16 14:45:55 -07:00
mmc mmc: omap_hsmmc: Fix PM regression with deferred probe for pm_runtime_reinit 2016-02-15 14:10:48 +01:00
mtd Late MTD fix for v4.5: 2016-03-11 16:34:18 -08:00
net mm: introduce page reference manipulation functions 2016-03-17 15:09:34 -07:00
nfc nfc: pn544: Remove i2c client gpio irq configuration 2015-12-29 19:06:23 +01:00
ntb NTB: Fix macro parameter conflict with field name 2016-01-21 19:53:10 -05:00
nubus
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nvdimm Merge branch 'for-4.6/pfn' into libnvdimm-for-next 2016-03-09 17:15:43 -08:00
nvme nvme: fix max_segments integer truncation 2016-03-03 14:43:10 -07:00
nvmem nvmem: qfprom: Specify LE device endianness 2016-02-07 23:09:13 -08:00
of PCI changes for the v4.6 merge window: 2016-03-16 14:45:55 -07:00
oprofile wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
parisc PCI changes for the v4.6 merge window: 2016-03-16 14:45:55 -07:00
parport parport: avoid assignment in if 2016-01-03 16:32:59 -08:00
pci PCI changes for the v4.6 merge window: 2016-03-16 14:45:55 -07:00
pcmcia
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perf
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phy phy: twl4030-usb: Fix unbalanced pm_runtime_enable on module reload 2016-02-10 11:46:01 +05:30
pinctrl pinctrl: single: Use a separate lockdep class 2016-03-11 23:03:06 +07:00
platform intel_scu_ipcutil: underflow in scu_reg_access() 2016-01-30 09:40:35 -08:00
pnp PNP / ACPI: add ACPI_RESOURCE_TYPE_SERIAL_BUS as a valid type 2016-03-09 23:50:55 +01:00
power power: bq27xxx_battery: Restore device name 2016-02-21 20:49:34 +01:00
powercap powercap/rapl: track lead cpu per package 2016-03-09 00:26:44 +01:00
pps
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ps3
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ptp Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-15 12:13:56 -07:00
pwm pwm: Mark all devices as "might sleep" 2016-01-21 15:04:59 +01:00
rapidio drivers: Initialize resource entry to zero 2016-01-30 09:49:58 +01:00
ras
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regulator Merge remote-tracking branches 'regulator/topic/s5m8767' and 'regulator/topic/vexpress' into regulator-next 2016-03-13 15:20:14 +07:00
remoteproc virtio: make find_vqs() checkpatch.pl-friendly 2016-01-12 20:47:06 +02:00
reset
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rpmsg virtio: make find_vqs() checkpatch.pl-friendly 2016-01-12 20:47:06 +02:00
rtc rtc: pcf2127: add pcf2129 device id 2016-03-14 17:08:41 +01:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2016-03-16 10:47:45 -07:00
sbus convert a bunch of open-coded instances of memdup_user_nul() 2016-01-04 10:26:58 -05:00
scsi SCSI misc on 20160315 2016-03-16 17:16:22 -07:00
sfi
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sh Linux 4.5-rc6 2016-03-04 12:12:08 +01:00
sn
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soc ARM: SoC support for Tegra platforms for v4.5 2016-01-22 17:30:52 -08:00
spi Merge remote-tracking branches 'spi/topic/res', 'spi/topic/rockchip', 'spi/topic/sh', 'spi/topic/ti-qspi' and 'spi/topic/xilinx' into spi-next 2016-03-11 14:28:53 +07:00
spmi
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ssb ssb: host_soc depends on sprom 2016-02-26 12:47:32 +02:00
staging media fixes for v4.5-rc7 2016-03-05 12:32:34 -08:00
target target: Drop incorrect ABORT_TASK put for completed commands 2016-03-05 20:24:47 -08:00
tc
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thermal thermal: cpu_cooling: fix out of bounds access in time_in_idle 2016-02-11 07:13:29 -08:00
thunderbolt
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tty Revert "8250: uniphier: allow modular build with 8250 console" 2016-02-07 18:22:54 -08:00
uio
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usb media updates for v4.6-rc1 2016-03-16 18:27:32 -07:00
uwb
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vfio vfio: fix ioctl error handling 2016-02-28 07:38:52 -07:00
vhost vhost: fix error path in vhost_init_used() 2016-03-02 17:01:49 +02:00
video fbdev changes for 4.6 2016-03-16 18:37:20 -07:00
virt
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virtio virtio_balloon: export 'available' memory to balloon statistics 2016-03-17 15:09:34 -07:00
vlynq
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vme
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w1
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watchdog Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 2016-03-01 08:57:34 -08:00
xen xen_balloon: support memory auto onlining policy 2016-03-15 16:55:16 -07:00
zorro zorro: Use kobj_to_dev() 2016-01-25 09:42:23 +01:00
Kconfig
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Makefile
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