UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/arch/arm
History
Naoya Horiguchi 83467efbdb mm: migrate: check movability of hugepage in unmap_and_move_huge_page() 
Currently hugepage migration works well only for pmd-based hugepages
(mainly due to lack of testing,) so we had better not enable migration of
other levels of hugepages until we are ready for it.

Some users of hugepage migration (mbind, move_pages, and migrate_pages) do
page table walk and check pud/pmd_huge() there, so they are safe.  But the
other users (softoffline and memory hotremove) don't do this, so without
this patch they can try to migrate unexpected types of hugepages.

To prevent this, we introduce hugepage_migration_support() as an
architecture dependent check of whether hugepage are implemented on a pmd
basis or not.  And on some architecture multiple sizes of hugepages are
available, so hugepage_migration_support() also checks hugepage size.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Rik van Riel <riel@redhat.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2013-09-11 15:57:49 -07:00
..
boot ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
common Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2013-09-10 13:37:36 -07:00
configs ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
crypto
…
include ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
kernel ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
kvm Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2013-09-05 18:07:32 -07:00
lib Pull branch 'for-rmk' of git://git.linaro.org/people/ardbiesheuvel/linux-arm into devel-stable 2013-07-22 17:46:40 +01:00
mach-at91 ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-bcm ARM: bcm: Make secure API call optional 2013-08-20 10:51:39 -07:00
mach-bcm2835
…
mach-clps711x ARM: clps711x: edb7211: Remove extra iotable_init() call 2013-08-13 23:29:16 -07:00
mach-cns3xxx
…
mach-davinci ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
mach-dove ARM: SoC board updates for 3.12 2013-09-06 13:34:43 -07:00
mach-ebsa110 ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-ep93xx MMC highlights for 3.12: 2013-09-10 13:33:09 -07:00
mach-exynos ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-footbridge ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-gemini ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-highbank ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-imx Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2013-09-10 13:37:36 -07:00
mach-integrator ARM: debug: move PL01X debug include into arch/arm/include/debug/ 2013-08-25 17:11:06 +01:00
mach-iop13xx ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-iop32x ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-iop33x ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-ixp4xx ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-keystone Omap fixes for the merge window that are not urgent enough 2013-08-29 19:12:04 -07:00
mach-kirkwood ARM: SoC board updates for 3.12 2013-09-06 13:34:43 -07:00
mach-ks8695 gpio: (gpio-pca953x) move header to linux/platform_data/ 2013-08-29 12:33:52 -07:00
mach-lpc32xx ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-mmp ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-msm ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
mach-mv78xx0 ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
mach-mvebu ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
mach-mxs ARM: mxs: pm: Include "pm.h" 2013-08-18 16:34:57 +08:00
mach-netx
…
mach-nomadik ARM: nomadik: switch to use the Nomadik I2C driver 2013-08-07 00:59:06 +02:00
mach-nspire
…
mach-omap1 ARM: DRA7: id: Add cpu detection support for DRA7xx based SoCs' 2013-08-13 16:58:08 +05:30
mach-omap2 ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-orion5x ARM: SoC board updates for 3.12 2013-09-06 13:34:43 -07:00
mach-picoxcell
…
mach-prima2 ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
mach-pxa ARM: SoC DT updates for 3.12 2013-09-06 13:26:27 -07:00
mach-realview ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
mach-rockchip
…
mach-rpc ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-s3c24xx ARM: SAMSUNG: Remove pwm-clock infrastructure 2013-08-12 21:53:24 +02:00
mach-s3c64xx gpio: (gpio-pca953x) move header to linux/platform_data/ 2013-08-29 12:33:52 -07:00
mach-s5p64x0 ARM: SAMSUNG: Remove remaining uses of plat/regs-timer.h header 2013-08-12 21:53:24 +02:00
mach-s5pc100 ARM: SAMSUNG: Remove pwm-clock infrastructure 2013-08-12 21:53:24 +02:00
mach-s5pv210 ARM: SAMSUNG: Remove remaining uses of plat/regs-timer.h header 2013-08-12 21:53:24 +02:00
mach-sa1100
…
mach-shark
…
mach-shmobile ARM: Renesas SoC cleanup, refactoring and more SMP support 2013-09-09 16:33:57 -07:00
mach-socfpga
…
mach-spear ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
mach-sti ARM: STi: remove sti_secondary_start from INIT section. 2013-08-04 13:40:55 -07:00
mach-sunxi ARM: sunxi: Introduce Allwinner A20 support 2013-08-16 23:23:41 +02:00
mach-tegra ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
mach-u300
…
mach-ux500 ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-versatile ARM: debug: move PL01X debug include into arch/arm/include/debug/ 2013-08-25 17:11:06 +01:00
mach-vexpress ARM: SoC drivers for v3.12 2013-09-09 16:08:13 -07:00
mach-virt
…
mach-vt8500
…
mach-w90x900
…
mach-zynq arm: Xilinx Zynq cleanup patches for v3.12 2013-08-20 15:05:31 -07:00
mm mm: migrate: check movability of hugepage in unmap_and_move_huge_page() 2013-09-11 15:57:49 -07:00
net
…
nwfpe
…
oprofile
…
plat-iop
…
plat-omap ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
plat-orion ARM: plat-orion: add reg offset to DT irq driver stub 2013-07-25 21:07:33 +00:00
plat-pxa ARM: pxa: ssp: add pxa_ssp_request_of() 2013-08-14 19:54:30 +01:00
plat-samsung ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
plat-versatile
…
tools
…
vfp
…
xen Linux 3.11-rc7 2013-09-09 12:05:37 -04:00
Kconfig ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
Kconfig-nommu
…
Kconfig.debug ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
Makefile Merge branch 'zynq/dt' into next/dt 2013-08-14 08:14:50 -07:00