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Wen Congyang a16cee10c7 memory-hotplug: preparation to notify memory block's state at memory hot remove 
remove_memory() is called in two cases:
1. echo offline >/sys/devices/system/memory/memoryXX/state
2. hot remove a memory device

In the 1st case, the memory block's state is changed and the notification
that memory block's state changed is sent to userland after calling
remove_memory().  So user can notice memory block is changed.

But in the 2nd case, the memory block's state is not changed and the
notification is not also sent to userspcae even if calling
remove_memory().  So user cannot notice memory block is changed.

For adding the notification at memory hot remove, the patch just prepare
as follows:
1st case uses offline_pages() for offlining memory.
2nd case uses remove_memory() for offlining memory and changing memory block's
    state and notifing the information.

The patch does not implement notification to remove_memory().

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Jiang Liu <liuj97@gmail.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-09 16:23:02 +09:00
..
accessibility
acpi Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-10-08 07:14:06 +09:00
amba
ata SCSI for-linus on 20121002 2012-10-02 19:01:32 -07:00
atm sections: fix section conflicts in drivers/atm 2012-10-06 03:04:40 +09:00
auxdisplay
base memory-hotplug: preparation to notify memory block's state at memory hot remove 2012-10-09 16:23:02 +09:00
bcma
block Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2012-10-08 06:38:18 +09:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-10-02 13:38:27 -07:00
bus drivers: bus: omap_l3: fixup merge conflict resolution 2012-10-01 19:39:48 -07:00
cdrom
char mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
clk spi: Updates for v3.7 2012-10-02 17:26:42 -07:00
clocksource Power management updates for 3.7-rc1 2012-10-02 18:32:35 -07:00
connector Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-10-02 13:38:27 -07:00
cpufreq Power management updates for 3.7-rc1 2012-10-02 18:32:35 -07:00
cpuidle
crypto ARM: soc: late platform updates 2012-10-07 20:55:16 +09:00
dca
devfreq
dio
dma Sound updates for 3.7-rc1 2012-10-09 07:07:14 +09:00
edac Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2012-10-06 03:16:12 +09:00
eisa
extcon Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2012-10-02 09:54:49 -07:00
firewire
firmware
gpio ARM: soc: late platform updates 2012-10-07 20:55:16 +09:00
gpu mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
hid Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2012-10-02 09:54:49 -07:00
hsi
hv
hwmon ARM: soc: late platform updates 2012-10-07 20:55:16 +09:00
hwspinlock
i2c Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-10-08 07:14:06 +09:00
ide sections: fix section conflicts in drivers/ide 2012-10-06 03:04:41 +09:00
idle
iio
infiniband mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
input Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-10-08 07:14:06 +09:00
iommu IOMMU Updates for Linux v3.7-rc1 2012-10-08 06:33:44 +09:00
irqchip
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-10-02 13:38:27 -07:00
leds MFD bits for the 3.7 merge window. 2012-10-05 12:01:30 +09:00
lguest Merge branch 'virtio-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-07 21:04:56 +09:00
macintosh Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2012-10-06 03:16:12 +09:00
md Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2012-10-02 09:54:49 -07:00
media mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
memory
memstick
message
mfd 1. New drivers: 2012-10-07 17:29:24 +09:00
misc mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
mmc sections: fix section conflicts in drivers/mmc 2012-10-06 03:04:42 +09:00
mtd mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
net Second batch of changes for the 3.7 merge window: 2012-10-07 17:19:49 +09:00
nfc
nubus
of Devicetree updates for 3.7 2012-10-03 09:44:08 -07:00
oprofile mm: use mm->exe_file instead of first VM_EXECUTABLE vma->vm_file 2012-10-09 16:22:18 +09:00
parisc
parport
pci Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2012-10-06 03:16:12 +09:00
pcmcia ARM: soc: multiplatform enablement 2012-10-01 19:11:38 -07:00
pinctrl ARM: soc: late platform updates 2012-10-07 20:55:16 +09:00
platform Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-10-08 07:14:06 +09:00
pnp
power 1. New drivers: 2012-10-07 17:29:24 +09:00
pps idr: rename MAX_LEVEL to MAX_IDR_LEVEL 2012-10-06 03:04:56 +09:00
ps3
ptp
pwm MFD bits for the 3.7 merge window. 2012-10-05 12:01:30 +09:00
rapidio rapidio: add destination ID allocation mechanism 2012-10-06 03:05:23 +09:00
regulator MFD bits for the 3.7 merge window. 2012-10-05 12:01:30 +09:00
remoteproc Merge branch 'virtio-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-07 21:04:56 +09:00
rpmsg Merge branch 'virtio-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-07 21:04:56 +09:00
rtc Merge branch 'akpm' (Andrew's patch-bomb) 2012-10-06 03:09:16 +09:00
s390 Merge branch 'virtio-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-07 21:04:56 +09:00
sbus
scsi mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
sfi
sh ARM: soc: multiplatform enablement 2012-10-01 19:11:38 -07:00
sn
spi ARM: soc: late platform updates 2012-10-07 20:55:16 +09:00
ssb
staging mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
target
tc
thermal idr: rename MAX_LEVEL to MAX_IDR_LEVEL 2012-10-06 03:04:56 +09:00
tty Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2012-10-06 03:16:12 +09:00
uio mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
usb mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
uwb
vfio
vhost
video mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
virt
virtio
vlynq
vme
w1
watchdog Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu 2012-10-07 21:06:10 +09:00
xen mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
zorro
Kconfig ARM: soc: driver specific changes 2012-10-01 18:46:13 -07:00
Makefile Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-10-02 13:38:27 -07:00