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linux-sg2042
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David Hildenbrand b3d40a2b6d mm: enforce pageblock_order < MAX_ORDER 
Some places in the kernel don't really expect pageblock_order >=
MAX_ORDER, and it looks like this is only possible in corner cases:

1) CONFIG_DEFERRED_STRUCT_PAGE_INIT we'll end up freeing pageblock_order
   pages via __free_pages_core(), which cannot possibly work.

2) find_zone_movable_pfns_for_nodes() will roundup the ZONE_MOVABLE
   start PFN to MAX_ORDER_NR_PAGES. Consequently with a bigger
   pageblock_order, we could have a single pageblock partially managed by
   two zones.

3) compaction code runs into __fragmentation_index() with order
   >= MAX_ORDER, when checking WARN_ON_ONCE(order >= MAX_ORDER). [1]

4) mm/page_reporting.c won't be reporting any pages with default
   page_reporting_order == pageblock_order, as we'll be skipping the
   reporting loop inside page_reporting_process_zone().

5) __rmqueue_fallback() will never be able to steal with
   ALLOC_NOFRAGMENT.

pageblock_order >= MAX_ORDER is weird either way: it's a pure
optimization for making alloc_contig_range(), as used for allcoation of
gigantic pages, a little more reliable to succeed.  However, if there is
demand for somewhat reliable allocation of gigantic pages, affected
setups should be using CMA or boottime allocations instead.

So let's make sure that pageblock_order < MAX_ORDER and simplify.

[1] https://lkml.kernel.org/r/87r189a2ks.fsf@linux.ibm.com

Link: https://lkml.kernel.org/r/20220214174132.219303-3-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: John Garry via iommu <iommu@lists.linux-foundation.org>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2022-03-22 15:57:06 -07:00
..
accessibility speakup-dectlk: Restore pitch setting 2022-02-08 12:15:04 +01:00
acpi Revert "ACPI: scan: Do not add device IDs from _CID if _HID is not valid" 2022-03-16 11:23:05 +01:00
amba ARM: 9163/1: amba: Move of_amba_device_decode_irq() into amba_probe() 2021-12-17 11:34:35 +00:00
android Merge 5.16-rc8 into char-misc-next 2022-01-03 13:44:38 +01:00
ata ata: pata_hpt37x: disable primary channel on HPT371 2022-02-23 09:39:37 +09:00
atm atm: eni: Add check for dma_map_single 2022-03-15 11:01:52 +00:00
auxdisplay auxdisplay: lcd2s: Use proper API to free the instance of charlcd object 2022-03-03 00:30:31 +01:00
base regmap: Fix for v5.17 2022-02-25 12:30:01 -08:00
bcma
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block remove bdi_congested() and wb_congested() and related functions 2022-03-22 15:57:01 -07:00
bluetooth virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
bus bus: mhi: pci_generic: Add mru_default for Cinterion MV31-W 2022-02-06 13:19:46 +01:00
cdrom cdrom: simplify subdirectory registration with register_sysctl() 2022-01-22 08:33:35 +02:00
char virtio_console: break out of buf poll on remove 2022-03-04 08:33:22 -05:00
clk clk: lan966x: Fix linking error 2022-02-24 16:53:24 -08:00
clocksource ARM: dts: Use 32KiHz oscillator on devkit8000 2022-02-18 10:08:45 +02:00
comedi
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connector connector/cn_proc: Use task_is_in_init_pid_ns() 2022-01-26 18:57:09 -08:00
counter counter: Stop using dev_get_drvdata() to get the counter device 2022-03-15 19:24:13 +01:00
cpufreq cpufreq: qcom-hw: Delay enabling throttle_irq 2022-02-09 13:18:49 +05:30
cpuidle cpuidle: use default_groups in kobj_type 2022-01-05 18:31:17 +01:00
crypto crypto: qcom-rng - ensure buffer for generate is completely filled 2022-03-14 14:41:04 +12:00
cxl cxl/core: Remove cxld_const_init in cxl_decoder_alloc() 2022-01-04 17:29:31 -08:00
dax fs: allocate inode by using alloc_inode_sb() 2022-03-22 15:57:03 -07:00
dca
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devfreq PM / devfreq: Reduce log severity for informative message 2021-12-16 11:29:54 +09:00
dio
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dma dmaengine: shdma: Fix runtime PM imbalance on error 2022-02-15 11:04:16 +05:30
dma-buf dma-buf: heaps: Fix potential spectre v1 gadget 2022-02-01 13:18:09 +05:30
edac EDAC: Fix calculation of returned address and next offset in edac_align_ptr() 2022-02-15 15:54:46 +01:00
eisa
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extcon extcon: Deduplicate code in extcon_set_state_sync() 2021-12-24 15:27:52 +09:00
firewire
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firmware Final EFI fix for v5.17 2022-03-16 11:57:46 -07:00
fpga
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fsi
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gnss gnss: usb: add support for Sierra Wireless XM1210 2021-12-22 15:38:12 +01:00
gpio Revert "gpio: Revert regression in sysfs-gpio (gpiolib.c)" 2022-03-15 09:59:08 -07:00
gpu drm: Don't make DRM_PANEL_BRIDGE dependent on DRM_KMS_HELPERS 2022-03-17 11:07:57 +01:00
greybus greybus: es2: fix typo in a comment 2021-12-21 10:13:26 +01:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2022-03-09 13:47:12 -08:00
hsi
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hv Drivers: hv: utils: Make use of the helper macro LIST_HEAD() 2022-02-09 14:33:21 +00:00
hwmon hwmon: (pmbus) Clear pmbus fault/warning bits after read 2022-02-22 08:15:39 -08:00
hwspinlock
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hwtracing
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i2c i2c: brcmstb: fix support for DSL and CM variants 2022-02-18 10:37:33 +01:00
i3c i3c: master: dw: check return of dw_i3c_master_get_free_pos() 2022-01-13 02:05:50 +01:00
idle
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iio 1st set of IIO fixes for the 5.17 cycle. 2022-02-21 17:58:09 +01:00
infiniband RDMA/cma: Do not change route.addr.src_addr outside state checks 2022-02-25 16:46:51 -04:00
input Input: aiptek - properly check endpoint type 2022-03-14 18:15:11 -07:00
interconnect Merge branch 'icc-qcm2290' into icc-next 2021-12-15 07:14:27 +02:00
iommu iommu/tegra-smmu: Fix missing put_device() call in tegra_smmu_find 2022-02-28 14:01:57 +01:00
ipack
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irqchip irqchip/sifive-plic: Add missing thead,c900-plic match string 2022-02-02 10:49:29 +00:00
isdn isdn: hfcpci: check the return value of dma_set_mask() in setup_hw() 2022-03-07 11:27:12 +00:00
leds LED updates for 5.17. Nothing major is happening here. 2022-01-12 16:59:22 -08:00
macintosh macintosh/mac_hid.c: simplify subdirectory registration with register_sysctl() 2022-01-22 08:33:35 +02:00
mailbox - qcom: misc updates to qcom-ipcc driver 2022-01-13 11:19:07 -08:00
mcb
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md block: fix surprise removal for drivers calling blk_set_queue_dying 2022-02-17 07:54:03 -07:00
media bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
memory MTD core changes: 2022-01-11 11:35:28 -08:00
memstick
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message scsi: message: fusion: mptctl: Use dma_alloc_coherent() 2022-01-10 10:33:52 -05:00
mfd driver core changes for 5.17-rc1 2022-01-12 11:11:34 -08:00
misc eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX 2022-02-04 16:27:44 +01:00
mmc mmc: core: Restore (almost) the busy polling for MMC_SEND_OP_COND 2022-03-07 11:47:39 +01:00
most
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mtd mtd: rawnand: omap2: Actually prevent invalid configuration and build error 2022-03-07 17:46:54 +01:00
mux
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net iavf: Fix hang during reboot/shutdown 2022-03-17 09:37:37 -07:00
nfc NFC: port100: fix use-after-free in port100_send_complete 2022-03-09 19:59:34 -08:00
ntb ntb: intel: fix port config status offset for SPR 2022-01-28 10:19:16 -05:00
nubus proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
nvdimm virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
nvme nvmet: revert "nvmet: make discovery NQN configurable" 2022-03-15 10:39:26 +01:00
nvmem nvmem: core: Fix a conflict between MTD and NVMEM on wp-gpios property 2022-02-21 17:59:25 +01:00
of cma: factor out minimum alignment requirement 2022-03-22 15:57:05 -07:00
opp
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parisc parisc: Fix sglist access in ccio-dma.c 2022-01-28 10:15:34 +01:00
parport
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pci A single fix for a regression caused by the recent PCI/MSI rework which 2022-02-27 13:07:40 -08:00
pcmcia pci-v5.17-changes 2022-01-16 08:08:11 +02:00
perf Rework of the MSI interrupt infrastructure: 2022-01-13 09:05:29 -08:00
phy phy: dphy: Correct clk_pre parameter 2022-02-02 10:33:04 +05:30
pinctrl pinctrl: sunxi: Use unique lockdep classes for IRQs 2022-02-28 23:53:19 +01:00
platform surface: surface3_power: Fix battery readings on batteries without a serial number 2022-02-24 13:48:39 +01:00
pnp proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
power power: supply: bq256xx: Handle OOM correctly 2022-02-11 21:19:51 +01:00
powercap Merge back earlier power capping changes for v5.17 2021-12-27 16:51:12 +01:00
pps
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ps3
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ptp ptp: ocp: Add ptp_ocp_adjtime_coarse for large adjustments 2022-03-02 09:51:21 -08:00
pwm pwm: Changes for v5.17-rc1 2022-01-20 13:25:01 +02:00
rapidio rapidio: remove not used code about RIO_VID_TUNDRA 2021-12-21 10:22:19 +01:00
ras
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regulator regulator: da9121: Remove surplus DA9141 parameters 2022-02-22 11:56:29 +00:00
remoteproc remoteproc: qcom: q6v5: fix service routines build errors 2022-01-17 16:44:26 -06:00
reset SoC: Add support for StarFive JH7100 RISC-V SoC 2022-01-10 08:32:37 -08:00
rpmsg rpmsg fixes for v5.17-rc1 2022-01-27 11:23:26 +02:00
rtc rtc: sunplus: fix return value in sp_rtc_probe() 2022-01-16 23:50:34 +01:00
s390 s390/cio: verify the driver availability for path_event call 2022-02-09 22:55:01 +01:00
sbus
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scsi SCSI fixes on 20220319 2022-03-19 15:56:43 -07:00
sh
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siox
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slimbus
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soc ARM: SoC fixes for 5.17, part 3 2022-03-10 11:43:01 -08:00
soundwire Char/Misc and other driver changes for 5.17-rc1 2022-01-14 16:02:28 +01:00
spi spi: Fix for v5.17 2022-03-10 04:15:09 -08:00
spmi spmi: spmi-pmic-arb: fix irq_set_type race condition 2021-12-17 17:18:18 +01:00
ssb
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staging staging: rtl8723bs: Improve the comment explaining the locking rules 2022-03-02 16:38:24 +01:00
target scsi: target: iscsi: Make sure the np under each tpg is unique 2022-01-24 23:30:24 -05:00
tc
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tee OP-TEE fix error return code in probe functions 2022-02-18 17:30:01 +01:00
thermal thermal: core: Fix TZ_GET_TRIP NULL pointer dereference 2022-03-01 16:11:38 +01:00
thunderbolt thunderbolt: Add module parameter for CLx disabling 2021-12-28 10:43:56 +03:00
tty memcg: enable accounting for tty-related objects 2022-03-22 15:57:04 -07:00
uio UIO: use default_groups in kobj_type 2021-12-29 10:54:50 +01:00
usb USB fixes for 5.17 2022-03-19 10:16:33 -07:00
vdpa vdpa: fix use-after-free on vp_vdpa_remove 2022-03-06 06:06:50 -05:00
vfio VFIO updates for v5.17-rc1 2022-01-20 13:31:46 +02:00
vhost Networking fixes for 5.17-final, including fixes from netfilter, ipsec, 2022-03-17 12:55:26 -07:00
video * drm/panel: simple: Fix assignments from panel_dpi_probe() 2022-02-11 12:06:15 +10:00
virt bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
virtio mm: enforce pageblock_order < MAX_ORDER 2022-03-22 15:57:06 -07:00
visorbus
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vlynq
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vme
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w1 w1: w1_therm: use swap() to make code cleaner 2021-12-21 10:38:13 +01:00
watchdog linux-watchdog 5.17-rc1 tag 2022-01-17 08:07:57 +02:00
xen xen/gnttab: fix gnttab_end_foreign_access() without page specified 2022-03-07 09:48:55 +01:00
zorro proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
Kconfig
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Makefile
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