David Hildenbrand 27f852795a virtio-mem: don't special-case ZONE_MOVABLE ... When introducing virtio-mem, the semantics of ZONE_MOVABLE were rather unclear, which is why we special-cased ZONE_MOVABLE such that partially plugged blocks would never end up in ZONE_MOVABLE. Now that the semantics are much clearer (and will be documented in a follow-up patch including the new virtio-mem behavior), let's allow to online partially plugged memory blocks to ZONE_MOVABLE and also consider memory blocks that were onlined to ZONE_MOVABLE when unplugging memory. While unplugged memory pages are, in general, unmovable, they can be skipped when offlining memory. virtio-mem only unplugs fairly big chunks (in the megabyte range) and rather tries to shrink the memory region than randomly choosing memory. In theory, if all other pages in the movable zone would be movable, virtio-mem would only shrink that zone and not create any kind of fragmentation. In the future, we might want to remember the zone again and use the information when (un)plugging memory. For now, let's keep it simple. Note: Support for defragmentation is planned, to deal with fragmentation after unplug due to memory chunks within memory blocks that could not get unplugged before (e.g., somebody pinning pages within ZONE_MOVABLE for a longer time). Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: Baoquan He <bhe@redhat.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Qian Cai <cai@lca.pw> Link: http://lkml.kernel.org/r/20200816125333.7434-6-david@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2020-10-13 18:38:33 -07:00
..
accessibility	Char/Misc driver fixes for 5.9-rc3	2020-08-26 10:50:50 -07:00
acpi	ACPI: HMAT: refactor hmat_register_target_device to hmem_register_device	2020-10-13 18:38:27 -07:00
amba
android	drivers: android: Fix the SPDX comment style	2020-07-29 17:05:44 +02:00
ata	ata: ahci: mvebu: Make SATA PHY optional for Armada 3720	2020-10-09 12:47:56 -06:00
atm	atm: eni: fix the missed pci_disable_device() for eni_init_one()	2020-09-04 21:42:57 -07:00
auxdisplay	A trivial patch for auxdisplay:	2020-09-05 14:22:46 -07:00
base	drivers/base: make device_find_child_by_name() compatible with sysfs inputs	2020-10-13 18:38:28 -07:00
bcma	bcma: gpio: Use irqchip template	2020-08-02 18:26:51 +03:00
block	drivers-5.10-2020-10-12	2020-10-13 13:04:41 -07:00
bluetooth	Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next	2020-07-31 15:11:52 -07:00
bus	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
cdrom	gdrom: use bdev_check_media_change	2020-09-10 09:32:31 -06:00
char	block-5.10-2020-10-12	2020-10-13 12:12:44 -07:00
clk	clk: socfpga: stratix10: fix the divider for the emac_ptp_free_clk	2020-09-22 12:54:41 -07:00
clocksource	Updates for timekeeping, timers and related drivers:	2020-10-12 11:27:54 -07:00
connector
counter	counter: microchip-tcb-capture: check the correct variable	2020-08-22 11:38:42 +01:00
cpufreq	cpufreq: intel_pstate: Fix missing return statement	2020-09-30 17:37:23 +02:00
cpuidle	cpuidle: Drop misleading comments about RCU usage	2020-09-22 19:32:03 +02:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2020-10-13 08:50:16 -07:00
dax	device-dax: add a range mapping allocation attribute	2020-10-13 18:38:29 -07:00
dca
devfreq	PM / devfreq: tegra30: Disable clock on error in probe	2020-09-23 13:35:58 +09:00
dio
dma	dmaengine: dmatest: Prevent to run on misconfigured channel	2020-09-22 20:18:05 +05:30
dma-buf	dmabuf: fix NULL pointer dereference in dma_buf_release()	2020-09-21 11:17:06 +02:00
edac	EFI changes for v5.10:	2020-10-12 13:26:49 -07:00
eisa
extcon
firewire	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
firmware	efi/fake_mem: arrange for a resource entry per efi_fake_mem instance	2020-10-13 18:38:27 -07:00
fpga	Linux 5.8-rc7	2020-07-27 11:49:37 +02:00
fsi
gnss
gpio	GPIO bulk changes for the v5.10 kernel cycle:	2020-10-13 10:09:33 -07:00
gpu	i915: use find_lock_page instead of find_lock_entry	2020-10-13 18:38:29 -07:00
greybus	greybus: Use fallthrough pseudo-keyword	2020-07-29 16:58:08 +02:00
hid	Linux 5.9-rc4	2020-09-07 16:13:06 +02:00
hsi	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
hv	hyperv-fixes for 5.9-rc6	2020-09-15 16:20:43 -07:00
hwmon	hwmon: (pmbus/max20730) adjust the vout reading given voltage divider	2020-10-06 14:54:55 -07:00
hwspinlock
hwtracing	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
i2c	i2c: owl: Clear NACK and BUS error bits	2020-10-10 13:15:46 +02:00
i3c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
ide	block-5.10-2020-10-12	2020-10-13 12:12:44 -07:00
idle	cpuidle: Make CPUIDLE_FLAG_TLB_FLUSHED generic	2020-08-26 12:41:53 +02:00
iio	iio: adc: qcom-spmi-adc5: fix driver name	2020-09-22 13:33:19 +01:00
infiniband	block-5.10-2020-10-12	2020-10-13 12:12:44 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2020-10-03 11:37:23 -07:00
interconnect	interconnect: qcom: Fix small BW votes being truncated to zero	2020-09-04 00:07:12 +03:00
iommu	Surgery of the MSI interrupt handling to prepare the support of upcoming	2020-10-12 11:40:41 -07:00
ipack
irqchip	Merge branch 'irq/mstar' into irq/irqchip-next	2020-10-10 12:46:54 +01:00
isdn	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
leds	LEDs changes for 5.9-rc1.	2020-08-05 19:24:27 -07:00
lightnvm	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
macintosh	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
mailbox	iomap: constify ioreadX() iomem argument (as in generic implementation)	2020-08-14 19:56:57 -07:00
mcb
md	drivers-5.10-2020-10-12	2020-10-13 13:04:41 -07:00
media	media: dvb-frontends/drxk_hard.c: fix uninitialized variable warning	2020-10-08 14:15:14 +02:00
memory	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
memstick	Merge branch 'fixes' into next	2020-09-28 12:17:36 +02:00
message	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
mfd	- Bug Fixes	2020-08-28 10:15:33 -07:00
misc	Initial support for sharing virtual addresses between the CPU and	2020-10-12 10:40:34 -07:00
mmc	block-5.10-2020-10-12	2020-10-13 12:12:44 -07:00
most	drivers: most: add USB adapter driver	2020-07-31 14:38:12 +02:00
mtd	block-5.10-2020-10-12	2020-10-13 12:12:44 -07:00
mux	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
net	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2020-10-13 08:50:16 -07:00
nfc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-09-03 18:50:48 -07:00
ntb	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
nubus
nvdimm	mm/memremap_pages: support multiple ranges per invocation	2020-10-13 18:38:28 -07:00
nvme	drivers-5.10-2020-10-12	2020-10-13 13:04:41 -07:00
nvmem	nvmem: qcom-spmi-sdam: Enable multiple devices	2020-07-29 17:12:09 +02:00
of	of: address: Work around missing device_type property in pcie nodes	2020-08-19 16:30:57 -06:00
opp	Merge branch 'opp/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm	2020-09-01 19:44:20 +02:00
oprofile	module: Fix up module_notifier return values	2020-09-01 09:58:03 +02:00
parisc	Merge branch 'parisc-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux	2020-08-12 12:41:15 -07:00
parport	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
pci	mm/memremap_pages: support multiple ranges per invocation	2020-10-13 18:38:28 -07:00
pcmcia	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
perf	perf: arm-cmn: Fix conversion specifiers for node type	2020-10-01 22:30:07 +01:00
phy	phy: Second round of fixes for 5.9	2020-09-29 17:21:54 +02:00
pinctrl	GPIO bulk changes for the v5.10 kernel cycle:	2020-10-13 10:09:33 -07:00
platform	platform-drivers-x86 for v5.9-3	2020-10-06 12:00:52 -07:00
pnp
power	Power Supply Fixes for 5.9 cycle	2020-10-09 11:38:07 -07:00
powercap	powercap: RAPL: Add support for Lakefield	2020-09-16 14:16:04 +02:00
pps
ps3	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
ptp	ptp: ptp_clockmatrix: use i2c_master_send for i2c write	2020-08-19 16:23:22 -07:00
pwm	pwm: Changes for v5.9-rc1	2020-08-14 16:00:09 -07:00
rapidio	rapidio: Replace 'select' DMAENGINES 'with depends on'	2020-09-05 19:52:54 +03:00
ras	RAS/CEC: Convert to DEFINE_SHOW_ATTRIBUTE()	2020-09-25 19:05:31 +02:00
regulator	Merge remote-tracking branch 'regulator/for-5.10' into regulator-next	2020-10-05 16:54:56 +01:00
remoteproc	remoteproc: scp: add COMPILE_TEST dependency	2020-09-26 09:40:05 +02:00
reset	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
rpmsg	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
rtc	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
s390	block-5.10-2020-10-12	2020-10-13 12:12:44 -07:00
sbus
scsi	drivers-5.10-2020-10-12	2020-10-13 13:04:41 -07:00
sfi
sh	iomap: constify ioreadX() iomem argument (as in generic implementation)	2020-08-14 19:56:57 -07:00
siox
slimbus
soc	soc/tegra: pmc: Don't create fake interrupt hierarchy levels	2020-10-10 12:12:11 +01:00
soundwire	soundwire: fix double free of dangling pointer	2020-09-03 14:10:19 +05:30
spi	spi: Fix for v5.9	2020-10-09 18:05:12 -07:00
spmi
ssb	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
staging	media updates for v5.10-rc1	2020-10-13 09:37:02 -07:00
target	block-5.10-2020-10-12	2020-10-13 12:12:44 -07:00
tc
tee
thermal	- Fix bogus thermal shutdowns for omap4430 where bogus values	2020-09-04 12:49:03 -07:00
thunderbolt	thunderbolt: Fix for v5.9-rc6	2020-09-15 13:52:14 +02:00
tty	serial: 8250_pci: Add Realtek 816a and 816b	2020-09-16 13:23:33 +02:00
uio
usb	usbcore/driver: Accommodate usbip	2020-09-25 16:53:02 +02:00
vdpa	vdpa/mlx5: Fix dependency on MLX5_CORE	2020-10-08 16:02:00 -04:00
vfio	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
vhost	vhost-vdpa: fix page pinning leakage in error path	2020-10-04 03:47:02 -04:00
video	drm-misc-fixes for v5.9:	2020-10-06 12:38:28 +10:00
virt
virtio	virtio-mem: don't special-case ZONE_MOVABLE	2020-10-13 18:38:33 -07:00
visorbus
vlynq
vme
w1
watchdog	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
xen	mm/memremap_pages: support multiple ranges per invocation	2020-10-13 18:38:28 -07:00
zorro	zorro: Fix address space collision message with RAM expansion boards	2020-08-26 13:26:52 +02:00
Kconfig
Makefile