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Merge 5.10.157 into android12-5.10-lts
Changes in 5.10.157
scsi: scsi_transport_sas: Fix error handling in sas_phy_add()
ata: libata-scsi: simplify __ata_scsi_queuecmd()
ata: libata-core: do not issue non-internal commands once EH is pending
bridge: switchdev: Notify about VLAN protocol changes
bridge: switchdev: Fix memory leaks when changing VLAN protocol
drm/display: Don't assume dual mode adaptors support i2c sub-addressing
nvme: add a bogus subsystem NQN quirk for Micron MTFDKBA2T0TFH
nvme-pci: add NVME_QUIRK_BOGUS_NID for Micron Nitro
iio: ms5611: Simplify IO callback parameters
iio: pressure: ms5611: fixed value compensation bug
ceph: do not update snapshot context when there is no new snapshot
ceph: avoid putting the realm twice when decoding snaps fails
wifi: mac80211: fix memory free error when registering wiphy fail
wifi: mac80211_hwsim: fix debugfs attribute ps with rc table support
riscv: dts: sifive unleashed: Add PWM controlled LEDs
audit: fix undefined behavior in bit shift for AUDIT_BIT
wifi: airo: do not assign -1 to unsigned char
wifi: mac80211: Fix ack frame idr leak when mesh has no route
spi: stm32: fix stm32_spi_prepare_mbr() that halves spi clk for every run
selftests/bpf: Add verifier test for release_reference()
Revert "net: macsec: report real_dev features when HW offloading is enabled"
platform/x86: touchscreen_dmi: Add info for the RCA Cambio W101 v2 2-in-1
scsi: ibmvfc: Avoid path failures during live migration
scsi: scsi_debug: Make the READ CAPACITY response compliant with ZBC
drm: panel-orientation-quirks: Add quirk for Acer Switch V 10 (SW5-017)
block, bfq: fix null pointer dereference in bfq_bio_bfqg()
arm64/syscall: Include asm/ptrace.h in syscall_wrapper header.
RISC-V: vdso: Do not add missing symbols to version section in linker script
MIPS: pic32: treat port as signed integer
xfrm: fix "disable_policy" on ipv4 early demux
xfrm: replay: Fix ESN wrap around for GSO
af_key: Fix send_acquire race with pfkey_register
ARM: dts: am335x-pcm-953: Define fixed regulators in root node
ASoC: hdac_hda: fix hda pcm buffer overflow issue
ASoC: sgtl5000: Reset the CHIP_CLK_CTRL reg on remove
ASoC: soc-pcm: Don't zero TDM masks in __soc_pcm_open()
scsi: storvsc: Fix handling of srb_status and capacity change events
regulator: core: fix kobject release warning and memory leak in regulator_register()
spi: dw-dma: decrease reference count in dw_spi_dma_init_mfld()
regulator: core: fix UAF in destroy_regulator()
bus: sunxi-rsb: Support atomic transfers
tee: optee: fix possible memory leak in optee_register_device()
ARM: dts: at91: sam9g20ek: enable udc vbus gpio pinctrl
net: liquidio: simplify if expression
rxrpc: Allow list of in-use local UDP endpoints to be viewed in /proc
rxrpc: Use refcount_t rather than atomic_t
rxrpc: Fix race between conn bundle lookup and bundle removal [ZDI-CAN-15975]
nfc/nci: fix race with opening and closing
net: pch_gbe: fix potential memleak in pch_gbe_tx_queue()
9p/fd: fix issue of list_del corruption in p9_fd_cancel()
netfilter: conntrack: Fix data-races around ct mark
ARM: mxs: fix memory leak in mxs_machine_init()
ARM: dts: imx6q-prti6q: Fix ref/tcxo-clock-frequency properties
net: ethernet: mtk_eth_soc: fix error handling in mtk_open()
net/mlx4: Check retval of mlx4_bitmap_init
net/qla3xxx: fix potential memleak in ql3xxx_send()
net: pch_gbe: fix pci device refcount leak while module exiting
nfp: fill splittable of devlink_port_attrs correctly
nfp: add port from netdev validation for EEPROM access
macsec: Fix invalid error code set
Drivers: hv: vmbus: fix double free in the error path of vmbus_add_channel_work()
Drivers: hv: vmbus: fix possible memory leak in vmbus_device_register()
netfilter: ipset: Limit the maximal range of consecutive elements to add/delete
netfilter: ipset: regression in ip_set_hash_ip.c
net/mlx5: Fix FW tracer timestamp calculation
net/mlx5: Fix handling of entry refcount when command is not issued to FW
tipc: set con sock in tipc_conn_alloc
tipc: add an extra conn_get in tipc_conn_alloc
tipc: check skb_linearize() return value in tipc_disc_rcv()
xfrm: Fix ignored return value in xfrm6_init()
sfc: fix potential memleak in __ef100_hard_start_xmit()
net: sched: allow act_ct to be built without NF_NAT
NFC: nci: fix memory leak in nci_rx_data_packet()
regulator: twl6030: re-add TWL6032_SUBCLASS
bnx2x: fix pci device refcount leak in bnx2x_vf_is_pcie_pending()
dma-buf: fix racing conflict of dma_heap_add()
netfilter: flowtable_offload: add missing locking
dccp/tcp: Reset saddr on failure after inet6?_hash_connect().
ipv4: Fix error return code in fib_table_insert()
s390/dasd: fix no record found for raw_track_access
net: arcnet: Fix RESET flag handling
arcnet: fix potential memory leak in com20020_probe()
nfc: st-nci: fix incorrect validating logic in EVT_TRANSACTION
nfc: st-nci: fix memory leaks in EVT_TRANSACTION
net: thunderx: Fix the ACPI memory leak
s390/crashdump: fix TOD programmable field size
net: enetc: manage ENETC_F_QBV in priv->active_offloads only when enabled
net: enetc: cache accesses to &priv->si->hw
net: enetc: preserve TX ring priority across reconfiguration
lib/vdso: use "grep -E" instead of "egrep"
usb: dwc3: exynos: Fix remove() function
ext4: fix use-after-free in ext4_ext_shift_extents
arm64: dts: rockchip: lower rk3399-puma-haikou SD controller clock frequency
iio: light: apds9960: fix wrong register for gesture gain
iio: core: Fix entry not deleted when iio_register_sw_trigger_type() fails
init/Kconfig: fix CC_HAS_ASM_GOTO_TIED_OUTPUT test with dash
nios2: add FORCE for vmlinuz.gz
mmc: sdhci-brcmstb: Re-organize flags
mmc: sdhci-brcmstb: Enable Clock Gating to save power
mmc: sdhci-brcmstb: Fix SDHCI_RESET_ALL for CQHCI
usb: cdns3: Add support for DRD CDNSP
ceph: make ceph_create_session_msg a global symbol
ceph: make iterate_sessions a global symbol
ceph: flush mdlog before umounting
ceph: flush the mdlog before waiting on unsafe reqs
ceph: fix off by one bugs in unsafe_request_wait()
ceph: put the requests/sessions when it fails to alloc memory
ceph: fix possible NULL pointer dereference for req->r_session
ceph: Use kcalloc for allocating multiple elements
ceph: fix NULL pointer dereference for req->r_session
usb: dwc3: gadget: conditionally remove requests
usb: dwc3: gadget: Return -ESHUTDOWN on ep disable
usb: dwc3: gadget: Clear ep descriptor last
nilfs2: fix nilfs_sufile_mark_dirty() not set segment usage as dirty
gcov: clang: fix the buffer overflow issue
mm: vmscan: fix extreme overreclaim and swap floods
KVM: x86: nSVM: leave nested mode on vCPU free
KVM: x86: remove exit_int_info warning in svm_handle_exit
x86/ioremap: Fix page aligned size calculation in __ioremap_caller()
binder: avoid potential data leakage when copying txn
binder: read pre-translated fds from sender buffer
binder: defer copies of pre-patched txn data
binder: fix pointer cast warning
binder: Address corner cases in deferred copy and fixup
binder: Gracefully handle BINDER_TYPE_FDA objects with num_fds=0
Input: synaptics - switch touchpad on HP Laptop 15-da3001TU to RMI mode
ASoC: Intel: bytcht_es8316: Add quirk for the Nanote UMPC-01
serial: 8250: 8250_omap: Avoid RS485 RTS glitch on ->set_termios()
Input: goodix - try resetting the controller when no config is set
Input: soc_button_array - add use_low_level_irq module parameter
Input: soc_button_array - add Acer Switch V 10 to dmi_use_low_level_irq[]
xen-pciback: Allow setting PCI_MSIX_FLAGS_MASKALL too
xen/platform-pci: add missing free_irq() in error path
platform/x86: asus-wmi: add missing pci_dev_put() in asus_wmi_set_xusb2pr()
platform/x86: acer-wmi: Enable SW_TABLET_MODE on Switch V 10 (SW5-017)
zonefs: fix zone report size in __zonefs_io_error()
platform/x86: hp-wmi: Ignore Smart Experience App event
tcp: configurable source port perturb table size
net: usb: qmi_wwan: add Telit 0x103a composition
gpu: host1x: Avoid trying to use GART on Tegra20
dm integrity: flush the journal on suspend
dm integrity: clear the journal on suspend
wifi: wilc1000: validate pairwise and authentication suite offsets
wifi: wilc1000: validate length of IEEE80211_P2P_ATTR_OPER_CHANNEL attribute
wifi: wilc1000: validate length of IEEE80211_P2P_ATTR_CHANNEL_LIST attribute
wifi: wilc1000: validate number of channels
genirq/msi: Shutdown managed interrupts with unsatifiable affinities
genirq: Always limit the affinity to online CPUs
irqchip/gic-v3: Always trust the managed affinity provided by the core code
genirq: Take the proposed affinity at face value if force==true
btrfs: free btrfs_path before copying root refs to userspace
btrfs: free btrfs_path before copying fspath to userspace
btrfs: free btrfs_path before copying subvol info to userspace
btrfs: sysfs: normalize the error handling branch in btrfs_init_sysfs()
drm/amd/dc/dce120: Fix audio register mapping, stop triggering KASAN
drm/amdgpu: always register an MMU notifier for userptr
drm/i915: fix TLB invalidation for Gen12 video and compute engines
fuse: lock inode unconditionally in fuse_fallocate()
Linux 5.10.157
Change-Id: Ie53a7379c392879de240237eb8258857b59564a6
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit f53af4285d775cd9a9a146fc438bd0a1bee1838a upstream.
During proactive reclaim, we sometimes observe severe overreclaim, with
several thousand times more pages reclaimed than requested.
This trace was obtained from shrink_lruvec() during such an instance:
prio:0 anon_cost:1141521 file_cost:7767
nr_reclaimed:4387406 nr_to_reclaim:1047 (or_factor:4190)
nr=[7161123 345 578 1111]
While he reclaimer requested 4M, vmscan reclaimed close to 16G, most of it
by swapping. These requests take over a minute, during which the write()
to memory.reclaim is unkillably stuck inside the kernel.
Digging into the source, this is caused by the proportional reclaim
bailout logic. This code tries to resolve a fundamental conflict: to
reclaim roughly what was requested, while also aging all LRUs fairly and
in accordance to their size, swappiness, refault rates etc. The way it
attempts fairness is that once the reclaim goal has been reached, it stops
scanning the LRUs with the smaller remaining scan targets, and adjusts the
remainder of the bigger LRUs according to how much of the smaller LRUs was
scanned. It then finishes scanning that remainder regardless of the
reclaim goal.
This works fine if priority levels are low and the LRU lists are
comparable in size. However, in this instance, the cgroup that is
targeted by proactive reclaim has almost no files left - they've already
been squeezed out by proactive reclaim earlier - and the remaining anon
pages are hot. Anon rotations cause the priority level to drop to 0,
which results in reclaim targeting all of anon (a lot) and all of file
(almost nothing). By the time reclaim decides to bail, it has scanned
most or all of the file target, and therefor must also scan most or all of
the enormous anon target. This target is thousands of times larger than
the reclaim goal, thus causing the overreclaim.
The bailout code hasn't changed in years, why is this failing now? The
most likely explanations are two other recent changes in anon reclaim:
1. Before the series starting with commit 5df741963d ("mm: fix LRU
balancing effect of new transparent huge pages"), the VM was
overall relatively reluctant to swap at all, even if swap was
configured. This means the LRU balancing code didn't come into play
as often as it does now, and mostly in high pressure situations
where pronounced swap activity wouldn't be as surprising.
2. For historic reasons, shrink_lruvec() loops on the scan targets of
all LRU lists except the active anon one, meaning it would bail if
the only remaining pages to scan were active anon - even if there
were a lot of them.
Before the series starting with commit ccc5dc6734 ("mm/vmscan:
make active/inactive ratio as 1:1 for anon lru"), most anon pages
would live on the active LRU; the inactive one would contain only a
handful of preselected reclaim candidates. After the series, anon
gets aged similarly to file, and the inactive list is the default
for new anon pages as well, making it often the much bigger list.
As a result, the VM is now more likely to actually finish large
anon targets than before.
Change the code such that only one SWAP_CLUSTER_MAX-sized nudge toward the
larger LRU lists is made before bailing out on a met reclaim goal.
This fixes the extreme overreclaim problem.
Fairness is more subtle and harder to evaluate. No obvious misbehavior
was observed on the test workload, in any case. Conceptually, fairness
should primarily be a cumulative effect from regular, lower priority
scans. Once the VM is in trouble and needs to escalate scan targets to
make forward progress, fairness needs to take a backseat. This is also
acknowledged by the myriad exceptions in get_scan_count(). This patch
makes fairness decrease gradually, as it keeps fairness work static over
increasing priority levels with growing scan targets. This should make
more sense - although we may have to re-visit the exact values.
Link: https://lkml.kernel.org/r/20220802162811.39216-1-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Rik van Riel <riel@surriel.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Avoid async-reclaim to cause to reclaim-delay when ignore_references is true.
Bug: 240003372
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: Iaf50bd4ac53f748da0dac93324c6d94de11e01e9
The rmap locks(i_mmap_rwsem and anon_vma->root->rwsem) could be contended
under memory pressure if processes keep working on their vmas(e.g., fork,
mmap, munmap). It makes reclaim path stuck. In our real workload traces,
we see kswapd is waiting the lock for 300ms+(worst case, a sec) and it
makes other processes entering direct reclaim, which were also stuck on
the lock.
This patch makes lru aging path try_lock mode like shink_page_list so the
reclaim context will keep working with next lru pages without being stuck.
if it found the rmap lock contended, it rotates the page back to head of
lru in both active/inactive lrus to make them consistent behavior, which
is basic starting point rather than adding more heristic.
Since this patch introduces a new "contended" field as out-param along
with try_lock in-param in rmap_walk_control, it's not immutable any longer
if the try_lock is set so remove const keywords on rmap related functions.
Since rmap walking is already expensive operation, I doubt the const
would help sizable benefit( And we didn't have it until 5.17).
In a heavy app workload in Android, trace shows following statistics. It
almost removes rmap lock contention from reclaim path.
Martin Liu reported:
Before:
max_dur(ms) min_dur(ms) max-min(dur)ms avg_dur(ms) sum_dur(ms) count blocked_function
1632 0 1631 151.542173 31672 209 page_lock_anon_vma_read
601 0 601 145.544681 28817 198 rmap_walk_file
After:
max_dur(ms) min_dur(ms) max-min(dur)ms avg_dur(ms) sum_dur(ms) count blocked_function
NaN NaN NaN NaN NaN 0.0 NaN
0 0 0 0.127645 1 12 rmap_walk_file
[minchan@kernel.org: add comment, per Matthew]
Link: https://lkml.kernel.org/r/YnNqeB5tUf6LZ57b@google.com
Link: https://lkml.kernel.org/r/20220510215423.164547-1-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: John Dias <joaodias@google.com>
Cc: Tim Murray <timmurray@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Martin Liu <liumartin@google.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Conflicts:
folio->page
(cherry picked from commit 6d4675e601357834dadd2ba1d803f6484596015c)
Bug: 239681156
Bug: 252333201
Signed-off-by: Minchan Kim <minchan@google.com>
Change-Id: I0c63e0291120c8a1b5f2d83b8a7b210cb56c27a2
Signed-off-by: chenxin <chenxinxin@xiaomi.corp-partner.google.com>
This reverts commit e5b4949bfc.
The hook android_vh_tune_memcg_scan_type is not used by any vendor, so
remove it to help with merge issues with future LTS releases.
If this is needed by any real user, it can easily be reverted to add it
back and then the symbol should be added to the abi list at the same
time to prevent it from being removed again later.
Bug: 203756332
Bug: 230450931
Cc: xiaofeng <xiaofeng5@xiaomi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I0e32c24d67a9ede087eca5005796512a9451c1e2
Clearing trylock-bit of page shrinked by shrnk_page_list in advance
which avoids huge-page not to clear trylock-bit after shrink_page_list.
Fixes: 1f8f6d59a2 ("ANDROID: vendor_hook: Add hook to not be stuck ro rmap lock in kswapd or direct_reclaim")
Bug: 240003372
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: Iac4d60ec3497d9bb7ba1f001a5c08a604daf4f5a
export reclaim_pages to support to reclaim pages in drivers-page-list.
Bug: 240003372
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: If92ed66ec9ce9dd66565497e6774d89911652429
Add hooks to support trylock in rmaplock when reclaiming in kswapd or
direct_reclaim, in order to avoid wait lock for a long time.
- android_vh_handle_failed_page_trylock
- android_vh_page_trylock_set
- android_vh_page_trylock_clear
- android_vh_page_trylock_get_result
- android_vh_do_page_trylock
Bug: 240003372
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: I0f605b35ae41f15b3ca7bc72cd5f003175c318a5
Support two hooks as follows to protect multi-mapcount pages in kernel:
- trace_android_vh_page_should_be_protect
- trace_android_vh_mapped_page_try_sorthead
Bug: 236578020
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: I688aceabf17d9de2feac7c3ad7144d307de6ef29
Support five hooks as follows to account
the amount of multi-mapped pages in kernel:
- android_vh_show_mapcount_pages
- android_vh_do_traversal_lruvec
- android_vh_update_page_mapcount
- android_vh_add_page_to_lrulist
- android_vh_del_page_from_lrulist
Bug: 236578020
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: Ia2c7015aab442be7dbb496b8b630b9dff59ab935
Static code analysis tool reported NULL pointer access in
shrink_page_list() as the commit 26aa2d199d6f2 ("mm/migrate: demote
pages during reclaim") expects valid pgdat.
There is already an existing api, reclaim_pages, that tries to reclaim
pages from the list. use it instead of creating custom function.
Bug: 201263305
Fixes: 96f80f628451 ("ANDROID: mm: add reclaim_shmem_address_space() for faster reclaims")
Change-Id: Iaa11feac94c9e8338324ace0276c49d6a0adeb0c
Signed-off-by: Charan Teja Reddy <quic_charante@quicinc.com>
Provide a vendor hook android_vh_snapshot_refaults to record the
refault statistics of WORKINGSET_RESTORE_ANON;
Bug: 234214858
Signed-off-by: Bing Han <bing.han@transsion.com>
Change-Id: I20eb5ea99bf21fa8ba34b45e87d2ab9e9cdca167
Provide a vendor hook android_vh_inactive_is_low to replace the
calculation process of inactive_ratio.
The alternative calculation algorithm takes into account the
difference between file pages and anonymous pages.
Bug: 234214858
Signed-off-by: Bing Han <bing.han@transsion.com>
Change-Id: I6cf9c47fbc440852cc36e04f49d644146eb2c6af
Add memcg support for hooks in the reclaim path
Bug: 230450931
Change-Id: Ia3e6949985d915c8640139fbb93800d91e1e46f8
Signed-off-by: xiaofeng <xiaofeng5@xiaomi.com>
Export shrink_slab to module for do shrink-memory action.
Bug: 221768451
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: I5abe9ad419d64999b714d879c228625a243e90d1
Provide a vendor hook to allow page_referenced to be skipped
during shrink_active_list to avoid heavy cpuloading caused by
it.
Bug: 220878851
Signed-off-by: Liujie Xie <xieliujie@oppo.com>
Change-Id: Ie0e369f8f8739fea59a95470af20ab0e976869d1
This reverts commit bf769b7216.
The hook android_vh_do_shrink_slab is not used by any vendor, so remove
it to help with merge issues with future LTS releases.
If this is needed by any real user, it can easily be reverted to add it
back and then the symbol should be added to the abi list at the same
time to prevent it from being removed again later.
Bug: 203756332
Bug: 188684131
Cc: rongqianfeng <rongqianfeng@vivo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I814e3aad76770140063fad4a81951fc025b2b1dd
Changes in 5.10.67
rtc: tps65910: Correct driver module alias
io_uring: limit fixed table size by RLIMIT_NOFILE
io_uring: place fixed tables under memcg limits
io_uring: add ->splice_fd_in checks
io_uring: fail links of cancelled timeouts
io-wq: fix wakeup race when adding new work
btrfs: wake up async_delalloc_pages waiters after submit
btrfs: reset replace target device to allocation state on close
blk-zoned: allow zone management send operations without CAP_SYS_ADMIN
blk-zoned: allow BLKREPORTZONE without CAP_SYS_ADMIN
PCI/MSI: Skip masking MSI-X on Xen PV
powerpc/perf/hv-gpci: Fix counter value parsing
xen: fix setting of max_pfn in shared_info
9p/xen: Fix end of loop tests for list_for_each_entry
ceph: fix dereference of null pointer cf
selftests/ftrace: Fix requirement check of README file
tools/thermal/tmon: Add cross compiling support
clk: socfpga: agilex: fix the parents of the psi_ref_clk
clk: socfpga: agilex: fix up s2f_user0_clk representation
clk: socfpga: agilex: add the bypass register for s2f_usr0 clock
pinctrl: stmfx: Fix hazardous u8[] to unsigned long cast
pinctrl: ingenic: Fix incorrect pull up/down info
soc: qcom: aoss: Fix the out of bound usage of cooling_devs
soc: aspeed: lpc-ctrl: Fix boundary check for mmap
soc: aspeed: p2a-ctrl: Fix boundary check for mmap
arm64: mm: Fix TLBI vs ASID rollover
arm64: head: avoid over-mapping in map_memory
iio: ltc2983: fix device probe
wcn36xx: Ensure finish scan is not requested before start scan
crypto: public_key: fix overflow during implicit conversion
block: bfq: fix bfq_set_next_ioprio_data()
power: supply: max17042: handle fails of reading status register
dm crypt: Avoid percpu_counter spinlock contention in crypt_page_alloc()
crypto: ccp - shutdown SEV firmware on kexec
VMCI: fix NULL pointer dereference when unmapping queue pair
media: uvc: don't do DMA on stack
media: rc-loopback: return number of emitters rather than error
s390/qdio: fix roll-back after timeout on ESTABLISH ccw
s390/qdio: cancel the ESTABLISH ccw after timeout
Revert "dmaengine: imx-sdma: refine to load context only once"
dmaengine: imx-sdma: remove duplicated sdma_load_context
libata: add ATA_HORKAGE_NO_NCQ_TRIM for Samsung 860 and 870 SSDs
ARM: 9105/1: atags_to_fdt: don't warn about stack size
f2fs: fix to do sanity check for sb/cp fields correctly
PCI/portdrv: Enable Bandwidth Notification only if port supports it
PCI: Restrict ASMedia ASM1062 SATA Max Payload Size Supported
PCI: Return ~0 data on pciconfig_read() CAP_SYS_ADMIN failure
PCI: xilinx-nwl: Enable the clock through CCF
PCI: aardvark: Configure PCIe resources from 'ranges' DT property
PCI: Export pci_pio_to_address() for module use
PCI: aardvark: Fix checking for PIO status
PCI: aardvark: Fix masking and unmasking legacy INTx interrupts
HID: input: do not report stylus battery state as "full"
f2fs: quota: fix potential deadlock
pinctrl: remove empty lines in pinctrl subsystem
pinctrl: armada-37xx: Correct PWM pins definitions
scsi: bsg: Remove support for SCSI_IOCTL_SEND_COMMAND
clk: rockchip: drop GRF dependency for rk3328/rk3036 pll types
IB/hfi1: Adjust pkey entry in index 0
RDMA/iwcm: Release resources if iw_cm module initialization fails
docs: Fix infiniband uverbs minor number
scsi: BusLogic: Use %X for u32 sized integer rather than %lX
pinctrl: samsung: Fix pinctrl bank pin count
vfio: Use config not menuconfig for VFIO_NOIOMMU
scsi: ufs: Fix memory corruption by ufshcd_read_desc_param()
cpuidle: pseries: Fixup CEDE0 latency only for POWER10 onwards
powerpc/stacktrace: Include linux/delay.h
RDMA/efa: Remove double QP type assignment
RDMA/mlx5: Delete not-available udata check
cpuidle: pseries: Mark pseries_idle_proble() as __init
f2fs: reduce the scope of setting fsck tag when de->name_len is zero
openrisc: don't printk() unconditionally
dma-debug: fix debugfs initialization order
NFSv4/pNFS: Fix a layoutget livelock loop
NFSv4/pNFS: Always allow update of a zero valued layout barrier
NFSv4/pnfs: The layout barrier indicate a minimal value for the seqid
SUNRPC: Fix potential memory corruption
SUNRPC/xprtrdma: Fix reconnection locking
SUNRPC query transport's source port
sunrpc: Fix return value of get_srcport()
scsi: fdomain: Fix error return code in fdomain_probe()
pinctrl: single: Fix error return code in pcs_parse_bits_in_pinctrl_entry()
powerpc/numa: Consider the max NUMA node for migratable LPAR
scsi: smartpqi: Fix an error code in pqi_get_raid_map()
scsi: qedi: Fix error codes in qedi_alloc_global_queues()
scsi: qedf: Fix error codes in qedf_alloc_global_queues()
powerpc/config: Renable MTD_PHYSMAP_OF
iommu/vt-d: Update the virtual command related registers
HID: i2c-hid: Fix Elan touchpad regression
clk: imx8m: fix clock tree update of TF-A managed clocks
KVM: PPC: Book3S HV: Fix copy_tofrom_guest routines
scsi: ufs: ufs-exynos: Fix static checker warning
KVM: PPC: Book3S HV Nested: Reflect guest PMU in-use to L0 when guest SPRs are live
platform/x86: dell-smbios-wmi: Add missing kfree in error-exit from run_smbios_call
powerpc/smp: Update cpu_core_map on all PowerPc systems
RDMA/hns: Fix QP's resp incomplete assignment
fscache: Fix cookie key hashing
clk: at91: clk-generated: Limit the requested rate to our range
KVM: PPC: Fix clearing never mapped TCEs in realmode
soc: mediatek: cmdq: add address shift in jump
f2fs: fix to account missing .skipped_gc_rwsem
f2fs: fix unexpected ENOENT comes from f2fs_map_blocks()
f2fs: fix to unmap pages from userspace process in punch_hole()
f2fs: deallocate compressed pages when error happens
f2fs: should put a page beyond EOF when preparing a write
MIPS: Malta: fix alignment of the devicetree buffer
kbuild: Fix 'no symbols' warning when CONFIG_TRIM_UNUSD_KSYMS=y
userfaultfd: prevent concurrent API initialization
drm/vc4: hdmi: Set HD_CTL_WHOLSMP and HD_CTL_CHALIGN_SET
drm/amdgpu: Fix amdgpu_ras_eeprom_init()
ASoC: atmel: ATMEL drivers don't need HAS_DMA
media: dib8000: rewrite the init prbs logic
libbpf: Fix reuse of pinned map on older kernel
x86/hyperv: fix for unwanted manipulation of sched_clock when TSC marked unstable
crypto: mxs-dcp - Use sg_mapping_iter to copy data
PCI: Use pci_update_current_state() in pci_enable_device_flags()
tipc: keep the skb in rcv queue until the whole data is read
net: phy: Fix data type in DP83822 dp8382x_disable_wol()
iio: dac: ad5624r: Fix incorrect handling of an optional regulator.
iavf: do not override the adapter state in the watchdog task
iavf: fix locking of critical sections
ARM: dts: qcom: apq8064: correct clock names
video: fbdev: kyro: fix a DoS bug by restricting user input
netlink: Deal with ESRCH error in nlmsg_notify()
Smack: Fix wrong semantics in smk_access_entry()
drm: avoid blocking in drm_clients_info's rcu section
drm: serialize drm_file.master with a new spinlock
drm: protect drm_master pointers in drm_lease.c
rcu: Fix macro name CONFIG_TASKS_RCU_TRACE
igc: Check if num of q_vectors is smaller than max before array access
usb: host: fotg210: fix the endpoint's transactional opportunities calculation
usb: host: fotg210: fix the actual_length of an iso packet
usb: gadget: u_ether: fix a potential null pointer dereference
USB: EHCI: ehci-mv: improve error handling in mv_ehci_enable()
usb: gadget: composite: Allow bMaxPower=0 if self-powered
staging: board: Fix uninitialized spinlock when attaching genpd
tty: serial: jsm: hold port lock when reporting modem line changes
bus: fsl-mc: fix mmio base address for child DPRCs
selftests: firmware: Fix ignored return val of asprintf() warn
drm/amd/display: Fix timer_per_pixel unit error
media: hantro: vp8: Move noisy WARN_ON to vpu_debug
media: platform: stm32: unprepare clocks at handling errors in probe
media: atomisp: Fix runtime PM imbalance in atomisp_pci_probe
media: atomisp: pci: fix error return code in atomisp_pci_probe()
nfp: fix return statement in nfp_net_parse_meta()
ethtool: improve compat ioctl handling
drm/amdgpu: Fix a printing message
drm/amd/amdgpu: Update debugfs link_settings output link_rate field in hex
bpf/tests: Fix copy-and-paste error in double word test
bpf/tests: Do not PASS tests without actually testing the result
drm/bridge: nwl-dsi: Avoid potential multiplication overflow on 32-bit
arm64: dts: allwinner: h6: tanix-tx6: Fix regulator node names
video: fbdev: asiliantfb: Error out if 'pixclock' equals zero
video: fbdev: kyro: Error out if 'pixclock' equals zero
video: fbdev: riva: Error out if 'pixclock' equals zero
ipv4: ip_output.c: Fix out-of-bounds warning in ip_copy_addrs()
flow_dissector: Fix out-of-bounds warnings
s390/jump_label: print real address in a case of a jump label bug
s390: make PCI mio support a machine flag
serial: 8250: Define RX trigger levels for OxSemi 950 devices
xtensa: ISS: don't panic in rs_init
hvsi: don't panic on tty_register_driver failure
serial: 8250_pci: make setup_port() parameters explicitly unsigned
staging: ks7010: Fix the initialization of the 'sleep_status' structure
samples: bpf: Fix tracex7 error raised on the missing argument
libbpf: Fix race when pinning maps in parallel
ata: sata_dwc_460ex: No need to call phy_exit() befre phy_init()
Bluetooth: skip invalid hci_sync_conn_complete_evt
workqueue: Fix possible memory leaks in wq_numa_init()
ARM: dts: stm32: Set {bitclock,frame}-master phandles on DHCOM SoM
ARM: dts: stm32: Set {bitclock,frame}-master phandles on ST DKx
ARM: dts: stm32: Update AV96 adv7513 node per dtbs_check
bonding: 3ad: fix the concurrency between __bond_release_one() and bond_3ad_state_machine_handler()
ARM: dts: at91: use the right property for shutdown controller
arm64: tegra: Fix Tegra194 PCIe EP compatible string
ASoC: Intel: bytcr_rt5640: Move "Platform Clock" routes to the maps for the matching in-/output
ASoC: Intel: update sof_pcm512x quirks
media: imx258: Rectify mismatch of VTS value
media: imx258: Limit the max analogue gain to 480
media: v4l2-dv-timings.c: fix wrong condition in two for-loops
media: TDA1997x: fix tda1997x_query_dv_timings() return value
media: tegra-cec: Handle errors of clk_prepare_enable()
gfs2: Fix glock recursion in freeze_go_xmote_bh
arm64: dts: qcom: sdm630: Rewrite memory map
arm64: dts: qcom: sdm630: Fix TLMM node and pinctrl configuration
serial: 8250_omap: Handle optional overrun-throttle-ms property
ARM: dts: imx53-ppd: Fix ACHC entry
arm64: dts: qcom: ipq8074: fix pci node reg property
arm64: dts: qcom: sdm660: use reg value for memory node
arm64: dts: qcom: ipq6018: drop '0x' from unit address
arm64: dts: qcom: sdm630: don't use underscore in node name
arm64: dts: qcom: msm8994: don't use underscore in node name
arm64: dts: qcom: msm8996: don't use underscore in node name
arm64: dts: qcom: sm8250: Fix epss_l3 unit address
nvmem: qfprom: Fix up qfprom_disable_fuse_blowing() ordering
net: ethernet: stmmac: Do not use unreachable() in ipq806x_gmac_probe()
drm/msm: mdp4: drop vblank get/put from prepare/complete_commit
drm/msm/dsi: Fix DSI and DSI PHY regulator config from SDM660
drm: xlnx: zynqmp_dpsub: Call pm_runtime_get_sync before setting pixel clock
drm: xlnx: zynqmp: release reset to DP controller before accessing DP registers
thunderbolt: Fix port linking by checking all adapters
drm/amd/display: fix missing writeback disablement if plane is removed
drm/amd/display: fix incorrect CM/TF programming sequence in dwb
selftests/bpf: Fix xdp_tx.c prog section name
drm/vmwgfx: fix potential UAF in vmwgfx_surface.c
Bluetooth: schedule SCO timeouts with delayed_work
Bluetooth: avoid circular locks in sco_sock_connect
drm/msm/dp: return correct edid checksum after corrupted edid checksum read
net/mlx5: Fix variable type to match 64bit
gpu: drm: amd: amdgpu: amdgpu_i2c: fix possible uninitialized-variable access in amdgpu_i2c_router_select_ddc_port()
drm/display: fix possible null-pointer dereference in dcn10_set_clock()
mac80211: Fix monitor MTU limit so that A-MSDUs get through
ARM: tegra: acer-a500: Remove bogus USB VBUS regulators
ARM: tegra: tamonten: Fix UART pad setting
arm64: tegra: Fix compatible string for Tegra132 CPUs
arm64: dts: ls1046a: fix eeprom entries
nvme-tcp: don't check blk_mq_tag_to_rq when receiving pdu data
nvme: code command_id with a genctr for use-after-free validation
Bluetooth: Fix handling of LE Enhanced Connection Complete
opp: Don't print an error if required-opps is missing
serial: sh-sci: fix break handling for sysrq
iomap: pass writeback errors to the mapping
tcp: enable data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD
rpc: fix gss_svc_init cleanup on failure
selftests/bpf: Fix flaky send_signal test
hwmon: (pmbus/ibm-cffps) Fix write bits for LED control
staging: rts5208: Fix get_ms_information() heap buffer size
net: Fix offloading indirect devices dependency on qdisc order creation
kselftest/arm64: mte: Fix misleading output when skipping tests
kselftest/arm64: pac: Fix skipping of tests on systems without PAC
gfs2: Don't call dlm after protocol is unmounted
usb: chipidea: host: fix port index underflow and UBSAN complains
lockd: lockd server-side shouldn't set fl_ops
drm/exynos: Always initialize mapping in exynos_drm_register_dma()
rtl8xxxu: Fix the handling of TX A-MPDU aggregation
rtw88: use read_poll_timeout instead of fixed sleep
rtw88: wow: build wow function only if CONFIG_PM is on
rtw88: wow: fix size access error of probe request
octeontx2-pf: Fix NIX1_RX interface backpressure
m68knommu: only set CONFIG_ISA_DMA_API for ColdFire sub-arch
btrfs: tree-log: check btrfs_lookup_data_extent return value
soundwire: intel: fix potential race condition during power down
ASoC: Intel: Skylake: Fix module configuration for KPB and MIXER
ASoC: Intel: Skylake: Fix passing loadable flag for module
of: Don't allow __of_attached_node_sysfs() without CONFIG_SYSFS
mmc: sdhci-of-arasan: Modified SD default speed to 19MHz for ZynqMP
mmc: sdhci-of-arasan: Check return value of non-void funtions
mmc: rtsx_pci: Fix long reads when clock is prescaled
selftests/bpf: Enlarge select() timeout for test_maps
mmc: core: Return correct emmc response in case of ioctl error
cifs: fix wrong release in sess_alloc_buffer() failed path
Revert "USB: xhci: fix U1/U2 handling for hardware with XHCI_INTEL_HOST quirk set"
usb: musb: musb_dsps: request_irq() after initializing musb
usbip: give back URBs for unsent unlink requests during cleanup
usbip:vhci_hcd USB port can get stuck in the disabled state
ASoC: rockchip: i2s: Fix regmap_ops hang
ASoC: rockchip: i2s: Fixup config for DAIFMT_DSP_A/B
drm/amdkfd: Account for SH/SE count when setting up cu masks.
nfsd: fix crash on LOCKT on reexported NFSv3
iwlwifi: pcie: free RBs during configure
iwlwifi: mvm: fix a memory leak in iwl_mvm_mac_ctxt_beacon_changed
iwlwifi: mvm: avoid static queue number aliasing
iwlwifi: mvm: fix access to BSS elements
iwlwifi: fw: correctly limit to monitor dump
iwlwifi: mvm: Fix scan channel flags settings
net/mlx5: DR, fix a potential use-after-free bug
net/mlx5: DR, Enable QP retransmission
parport: remove non-zero check on count
selftests/bpf: Fix potential unreleased lock
wcn36xx: Fix missing frame timestamp for beacon/probe-resp
ath9k: fix OOB read ar9300_eeprom_restore_internal
ath9k: fix sleeping in atomic context
net: fix NULL pointer reference in cipso_v4_doi_free
fix array-index-out-of-bounds in taprio_change
net: w5100: check return value after calling platform_get_resource()
net: hns3: clean up a type mismatch warning
fs/io_uring Don't use the return value from import_iovec().
io_uring: remove duplicated io_size from rw
parisc: fix crash with signals and alloca
ovl: fix BUG_ON() in may_delete() when called from ovl_cleanup()
scsi: BusLogic: Fix missing pr_cont() use
scsi: qla2xxx: Changes to support kdump kernel
scsi: qla2xxx: Sync queue idx with queue_pair_map idx
cpufreq: powernv: Fix init_chip_info initialization in numa=off
s390/pv: fix the forcing of the swiotlb
hugetlb: fix hugetlb cgroup refcounting during vma split
mm/hmm: bypass devmap pte when all pfn requested flags are fulfilled
mm/hugetlb: initialize hugetlb_usage in mm_init
mm,vmscan: fix divide by zero in get_scan_count
memcg: enable accounting for pids in nested pid namespaces
libnvdimm/pmem: Fix crash triggered when I/O in-flight during unbind
platform/chrome: cros_ec_proto: Send command again when timeout occurs
lib/test_stackinit: Fix static initializer test
net: dsa: lantiq_gswip: fix maximum frame length
drm/mgag200: Select clock in PLL update functions
drm/msi/mdp4: populate priv->kms in mdp4_kms_init
drm/dp_mst: Fix return code on sideband message failure
drm/panfrost: Make sure MMU context lifetime is not bound to panfrost_priv
drm/amdgpu: Fix BUG_ON assert
drm/amd/display: Update number of DCN3 clock states
drm/amd/display: Update bounding box states (v2)
drm/panfrost: Simplify lock_region calculation
drm/panfrost: Use u64 for size in lock_region
drm/panfrost: Clamp lock region to Bifrost minimum
fanotify: limit number of event merge attempts
Linux 5.10.67
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ic8df59518265d0cdf724e93e8922cde48fc85ce9
commit 32d4f4b782bb8f0ceb78c6b5dc46eb577ae25bf7 upstream.
Commit f56ce412a59d ("mm: memcontrol: fix occasional OOMs due to
proportional memory.low reclaim") introduced a divide by zero corner
case when oomd is being used in combination with cgroup memory.low
protection.
When oomd decides to kill a cgroup, it will force the cgroup memory to
be reclaimed after killing the tasks, by writing to the memory.max file
for that cgroup, forcing the remaining page cache and reclaimable slab
to be reclaimed down to zero.
Previously, on cgroups with some memory.low protection that would result
in the memory being reclaimed down to the memory.low limit, or likely
not at all, having the page cache reclaimed asynchronously later.
With f56ce412a59d the oomd write to memory.max tries to reclaim all the
way down to zero, which may race with another reclaimer, to the point of
ending up with the divide by zero below.
This patch implements the obvious fix.
Link: https://lkml.kernel.org/r/20210826220149.058089c6@imladris.surriel.com
Fixes: f56ce412a59d ("mm: memcontrol: fix occasional OOMs due to proportional memory.low reclaim")
Signed-off-by: Rik van Riel <riel@surriel.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Chris Down <chris@chrisdown.name>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 5.10.61 into android12-5.10-lts
Changes in 5.10.61
ath: Use safer key clearing with key cache entries
ath9k: Clear key cache explicitly on disabling hardware
ath: Export ath_hw_keysetmac()
ath: Modify ath_key_delete() to not need full key entry
ath9k: Postpone key cache entry deletion for TXQ frames reference it
mtd: cfi_cmdset_0002: fix crash when erasing/writing AMD cards
media: zr364xx: propagate errors from zr364xx_start_readpipe()
media: zr364xx: fix memory leaks in probe()
media: drivers/media/usb: fix memory leak in zr364xx_probe
KVM: x86: Factor out x86 instruction emulation with decoding
KVM: X86: Fix warning caused by stale emulation context
USB: core: Avoid WARNings for 0-length descriptor requests
USB: core: Fix incorrect pipe calculation in do_proc_control()
dmaengine: xilinx_dma: Fix read-after-free bug when terminating transfers
dmaengine: usb-dmac: Fix PM reference leak in usb_dmac_probe()
spi: spi-mux: Add module info needed for autoloading
net: xfrm: Fix end of loop tests for list_for_each_entry
ARM: dts: am43x-epos-evm: Reduce i2c0 bus speed for tps65218
dmaengine: of-dma: router_xlate to return -EPROBE_DEFER if controller is not yet available
scsi: pm80xx: Fix TMF task completion race condition
scsi: megaraid_mm: Fix end of loop tests for list_for_each_entry()
scsi: scsi_dh_rdac: Avoid crash during rdac_bus_attach()
scsi: core: Avoid printing an error if target_alloc() returns -ENXIO
scsi: core: Fix capacity set to zero after offlinining device
drm/amdgpu: fix the doorbell missing when in CGPG issue for renoir.
qede: fix crash in rmmod qede while automatic debug collection
ARM: dts: nomadik: Fix up interrupt controller node names
net: usb: pegasus: Check the return value of get_geristers() and friends;
net: usb: lan78xx: don't modify phy_device state concurrently
drm/amd/display: Fix Dynamic bpp issue with 8K30 with Navi 1X
drm/amd/display: workaround for hard hang on HPD on native DP
Bluetooth: hidp: use correct wait queue when removing ctrl_wait
arm64: dts: qcom: c630: fix correct powerdown pin for WSA881x
arm64: dts: qcom: msm8992-bullhead: Remove PSCI
iommu: Check if group is NULL before remove device
cpufreq: armada-37xx: forbid cpufreq for 1.2 GHz variant
dccp: add do-while-0 stubs for dccp_pr_debug macros
virtio: Protect vqs list access
vhost-vdpa: Fix integer overflow in vhost_vdpa_process_iotlb_update()
bus: ti-sysc: Fix error handling for sysc_check_active_timer()
vhost: Fix the calculation in vhost_overflow()
vdpa/mlx5: Avoid destroying MR on empty iotlb
soc / drm: mediatek: Move DDP component defines into mtk-mmsys.h
drm/mediatek: Fix aal size config
drm/mediatek: Add AAL output size configuration
bpf: Clear zext_dst of dead insns
bnxt: don't lock the tx queue from napi poll
bnxt: disable napi before canceling DIM
bnxt: make sure xmit_more + errors does not miss doorbells
bnxt: count Tx drops
net: 6pack: fix slab-out-of-bounds in decode_data
ptp_pch: Restore dependency on PCI
bnxt_en: Disable aRFS if running on 212 firmware
bnxt_en: Add missing DMA memory barriers
vrf: Reset skb conntrack connection on VRF rcv
virtio-net: support XDP when not more queues
virtio-net: use NETIF_F_GRO_HW instead of NETIF_F_LRO
net: qlcnic: add missed unlock in qlcnic_83xx_flash_read32
ixgbe, xsk: clean up the resources in ixgbe_xsk_pool_enable error path
sch_cake: fix srchost/dsthost hashing mode
net: mdio-mux: Don't ignore memory allocation errors
net: mdio-mux: Handle -EPROBE_DEFER correctly
ovs: clear skb->tstamp in forwarding path
iommu/vt-d: Consolidate duplicate cache invaliation code
iommu/vt-d: Fix incomplete cache flush in intel_pasid_tear_down_entry()
r8152: fix writing USB_BP2_EN
i40e: Fix ATR queue selection
iavf: Fix ping is lost after untrusted VF had tried to change MAC
Revert "flow_offload: action should not be NULL when it is referenced"
mmc: dw_mmc: Fix hang on data CRC error
mmc: mmci: stm32: Check when the voltage switch procedure should be done
mmc: sdhci-msm: Update the software timeout value for sdhc
clk: imx6q: fix uart earlycon unwork
clk: qcom: gdsc: Ensure regulator init state matches GDSC state
ALSA: hda - fix the 'Capture Switch' value change notifications
tracing / histogram: Fix NULL pointer dereference on strcmp() on NULL event name
slimbus: messaging: start transaction ids from 1 instead of zero
slimbus: messaging: check for valid transaction id
slimbus: ngd: reset dma setup during runtime pm
ipack: tpci200: fix many double free issues in tpci200_pci_probe
ipack: tpci200: fix memory leak in the tpci200_register
ALSA: hda/realtek: Enable 4-speaker output for Dell XPS 15 9510 laptop
mmc: sdhci-iproc: Cap min clock frequency on BCM2711
mmc: sdhci-iproc: Set SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN on BCM2711
btrfs: prevent rename2 from exchanging a subvol with a directory from different parents
ALSA: hda/via: Apply runtime PM workaround for ASUS B23E
s390/pci: fix use after free of zpci_dev
PCI: Increase D3 delay for AMD Renoir/Cezanne XHCI
ALSA: hda/realtek: Limit mic boost on HP ProBook 445 G8
ASoC: intel: atom: Fix breakage for PCM buffer address setup
mm: memcontrol: fix occasional OOMs due to proportional memory.low reclaim
fs: warn about impending deprecation of mandatory locks
io_uring: fix xa_alloc_cycle() error return value check
io_uring: only assign io_uring_enter() SQPOLL error in actual error case
Linux 5.10.61
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I5b6e2a66b03d1cb01c8310b83dcc2a119c1bd6b3
[ Upstream commit f56ce412a59d7d938b81de8878faef128812482c ]
We've noticed occasional OOM killing when memory.low settings are in
effect for cgroups. This is unexpected and undesirable as memory.low is
supposed to express non-OOMing memory priorities between cgroups.
The reason for this is proportional memory.low reclaim. When cgroups
are below their memory.low threshold, reclaim passes them over in the
first round, and then retries if it couldn't find pages anywhere else.
But when cgroups are slightly above their memory.low setting, page scan
force is scaled down and diminished in proportion to the overage, to the
point where it can cause reclaim to fail as well - only in that case we
currently don't retry, and instead trigger OOM.
To fix this, hook proportional reclaim into the same retry logic we have
in place for when cgroups are skipped entirely. This way if reclaim
fails and some cgroups were scanned with diminished pressure, we'll try
another full-force cycle before giving up and OOMing.
[akpm@linux-foundation.org: coding-style fixes]
Link: https://lkml.kernel.org/r/20210817180506.220056-1-hannes@cmpxchg.org
Fixes: 9783aa9917 ("mm, memcg: proportional memory.{low,min} reclaim")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Leon Yang <lnyng@fb.com>
Reviewed-by: Rik van Riel <riel@surriel.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Chris Down <chris@chrisdown.name>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org> [5.4+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Export try_to_free_mem_cgroup_pages function to allow vendor modules to reclaim a memory cgroup.
Bug: 192052083
Signed-off-by: Liujie Xie <xieliujie@oppo.com>
Change-Id: Iec6ef50f5c71c62d0c9aa6de90e56a143dac61c1
Add the functionality that allow users of shmem to reclaim its pages
without going through the kswapd/direct reclaim path. An example usecase
is: Say that device allocates a larger amount of shmem pages and shares
it with hardware. To faster reclaims such pages, drivers can register
the shrinkers and call reclaim_shmem_address_space().
The implementation of this function is mostly borrowed from
reclaim_address_space() implemented for per process reclaim[1].
[1] https://lore.kernel.org/patchwork/cover/378056/
Bug: 187798288
Change-Id: I03d2c3b9610612af977f89ddeabb63b8e9e50918
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
When performing memory reclaim, support treating anonymous and
file backed pages equally. Swapping anonymous pages out to memory
can be efficient enough to justify treating anonymous and file backed
pages equally.
Create a vendor hook inside of get_scan_count so that equal reclaim of
anon and file pages can be enabled inside of the trace hook based on
certain conditions.
Bug: 175415908
Change-Id: Idac2f1468371549d20dd3e5652c7382dc3d7d9cf
Signed-off-by: Sudarshan Rajagopalan <sudaraja@codeaurora.org>
Some shrinker add lock in count_objects() may cause lock contention
issues and lead all task stall on slab shrink. Add vendor hook in
do_shrink_slab() for shrinker->count_objects() latency measuring.
Add 3 oem data in shrink_control struct. Two is for
shrinker->count_objects() and shrinker->scan_objects() latency
measuring, other one to store priority, some shrinker know the reclaimer
priority can control the memory reclaim more better.
Bug: 188684131
Change-Id: I80e9d90179bb52a99c54d9a067c6fcee835bb2ad
Signed-off-by: rongqianfeng <rongqianfeng@vivo.com>
Changes in 5.10.20
vmlinux.lds.h: add DWARF v5 sections
vdpa/mlx5: fix param validation in mlx5_vdpa_get_config()
debugfs: be more robust at handling improper input in debugfs_lookup()
debugfs: do not attempt to create a new file before the filesystem is initalized
scsi: libsas: docs: Remove notify_ha_event()
scsi: qla2xxx: Fix mailbox Ch erroneous error
kdb: Make memory allocations more robust
w1: w1_therm: Fix conversion result for negative temperatures
PCI: qcom: Use PHY_REFCLK_USE_PAD only for ipq8064
PCI: Decline to resize resources if boot config must be preserved
virt: vbox: Do not use wait_event_interruptible when called from kernel context
bfq: Avoid false bfq queue merging
ALSA: usb-audio: Fix PCM buffer allocation in non-vmalloc mode
MIPS: vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() section
vmlinux.lds.h: Define SANTIZER_DISCARDS with CONFIG_GCOV_KERNEL=y
random: fix the RNDRESEEDCRNG ioctl
ALSA: pcm: Call sync_stop at disconnection
ALSA: pcm: Assure sync with the pending stop operation at suspend
ALSA: pcm: Don't call sync_stop if it hasn't been stopped
drm/i915/gt: One more flush for Baytrail clear residuals
ath10k: Fix error handling in case of CE pipe init failure
Bluetooth: btqcomsmd: Fix a resource leak in error handling paths in the probe function
Bluetooth: hci_uart: Fix a race for write_work scheduling
Bluetooth: Fix initializing response id after clearing struct
arm64: dts: renesas: beacon kit: Fix choppy Bluetooth Audio
arm64: dts: renesas: beacon: Fix audio-1.8V pin enable
ARM: dts: exynos: correct PMIC interrupt trigger level on Artik 5
ARM: dts: exynos: correct PMIC interrupt trigger level on Monk
ARM: dts: exynos: correct PMIC interrupt trigger level on Rinato
ARM: dts: exynos: correct PMIC interrupt trigger level on Spring
ARM: dts: exynos: correct PMIC interrupt trigger level on Arndale Octa
ARM: dts: exynos: correct PMIC interrupt trigger level on Odroid XU3 family
arm64: dts: exynos: correct PMIC interrupt trigger level on TM2
arm64: dts: exynos: correct PMIC interrupt trigger level on Espresso
memory: mtk-smi: Fix PM usage counter unbalance in mtk_smi ops
Bluetooth: hci_qca: Fix memleak in qca_controller_memdump
staging: vchiq: Fix bulk userdata handling
staging: vchiq: Fix bulk transfers on 64-bit builds
arm64: dts: qcom: msm8916-samsung-a5u: Fix iris compatible
net: stmmac: dwmac-meson8b: fix enabling the timing-adjustment clock
bpf: Add bpf_patch_call_args prototype to include/linux/bpf.h
bpf: Avoid warning when re-casting __bpf_call_base into __bpf_call_base_args
firmware: arm_scmi: Fix call site of scmi_notification_exit
arm64: dts: allwinner: A64: properly connect USB PHY to port 0
arm64: dts: allwinner: H6: properly connect USB PHY to port 0
arm64: dts: allwinner: Drop non-removable from SoPine/LTS SD card
arm64: dts: allwinner: H6: Allow up to 150 MHz MMC bus frequency
arm64: dts: allwinner: A64: Limit MMC2 bus frequency to 150 MHz
arm64: dts: qcom: msm8916-samsung-a2015: Fix sensors
cpufreq: brcmstb-avs-cpufreq: Free resources in error path
cpufreq: brcmstb-avs-cpufreq: Fix resource leaks in ->remove()
arm64: dts: rockchip: rk3328: Add clock_in_out property to gmac2phy node
ACPICA: Fix exception code class checks
usb: gadget: u_audio: Free requests only after callback
arm64: dts: qcom: sdm845-db845c: Fix reset-pin of ov8856 node
soc: qcom: socinfo: Fix an off by one in qcom_show_pmic_model()
soc: ti: pm33xx: Fix some resource leak in the error handling paths of the probe function
staging: media: atomisp: Fix size_t format specifier in hmm_alloc() debug statemenet
Bluetooth: drop HCI device reference before return
Bluetooth: Put HCI device if inquiry procedure interrupts
memory: ti-aemif: Drop child node when jumping out loop
ARM: dts: Configure missing thermal interrupt for 4430
usb: dwc2: Do not update data length if it is 0 on inbound transfers
usb: dwc2: Abort transaction after errors with unknown reason
usb: dwc2: Make "trimming xfer length" a debug message
staging: rtl8723bs: wifi_regd.c: Fix incorrect number of regulatory rules
x86/MSR: Filter MSR writes through X86_IOC_WRMSR_REGS ioctl too
arm64: dts: renesas: beacon: Fix EEPROM compatible value
can: mcp251xfd: mcp251xfd_probe(): fix errata reference
ARM: dts: armada388-helios4: assign pinctrl to LEDs
ARM: dts: armada388-helios4: assign pinctrl to each fan
arm64: dts: armada-3720-turris-mox: rename u-boot mtd partition to a53-firmware
opp: Correct debug message in _opp_add_static_v2()
Bluetooth: btusb: Fix memory leak in btusb_mtk_wmt_recv
soc: qcom: ocmem: don't return NULL in of_get_ocmem
arm64: dts: msm8916: Fix reserved and rfsa nodes unit address
arm64: dts: meson: fix broken wifi node for Khadas VIM3L
iwlwifi: mvm: set enabled in the PPAG command properly
ARM: s3c: fix fiq for clang IAS
optee: simplify i2c access
staging: wfx: fix possible panic with re-queued frames
ARM: at91: use proper asm syntax in pm_suspend
ath10k: Fix suspicious RCU usage warning in ath10k_wmi_tlv_parse_peer_stats_info()
ath10k: Fix lockdep assertion warning in ath10k_sta_statistics
ath11k: fix a locking bug in ath11k_mac_op_start()
soc: aspeed: snoop: Add clock control logic
iwlwifi: mvm: fix the type we use in the PPAG table validity checks
iwlwifi: mvm: store PPAG enabled/disabled flag properly
iwlwifi: mvm: send stored PPAG command instead of local
iwlwifi: mvm: assign SAR table revision to the command later
iwlwifi: mvm: don't check if CSA event is running before removing
bpf_lru_list: Read double-checked variable once without lock
iwlwifi: pnvm: set the PNVM again if it was already loaded
iwlwifi: pnvm: increment the pointer before checking the TLV
ath9k: fix data bus crash when setting nf_override via debugfs
selftests/bpf: Convert test_xdp_redirect.sh to bash
ibmvnic: Set to CLOSED state even on error
bnxt_en: reverse order of TX disable and carrier off
bnxt_en: Fix devlink info's stored fw.psid version format.
xen/netback: fix spurious event detection for common event case
dpaa2-eth: fix memory leak in XDP_REDIRECT
net: phy: consider that suspend2ram may cut off PHY power
net/mlx5e: Don't change interrupt moderation params when DIM is enabled
net/mlx5e: Change interrupt moderation channel params also when channels are closed
net/mlx5: Fix health error state handling
net/mlx5e: Replace synchronize_rcu with synchronize_net
net/mlx5e: kTLS, Use refcounts to free kTLS RX priv context
net/mlx5: Disable devlink reload for multi port slave device
net/mlx5: Disallow RoCE on multi port slave device
net/mlx5: Disallow RoCE on lag device
net/mlx5: Disable devlink reload for lag devices
net/mlx5e: CT: manage the lifetime of the ct entry object
net/mlx5e: Check tunnel offload is required before setting SWP
mac80211: fix potential overflow when multiplying to u32 integers
libbpf: Ignore non function pointer member in struct_ops
bpf: Fix an unitialized value in bpf_iter
bpf, devmap: Use GFP_KERNEL for xdp bulk queue allocation
bpf: Fix bpf_fib_lookup helper MTU check for SKB ctx
selftests: mptcp: fix ACKRX debug message
tcp: fix SO_RCVLOWAT related hangs under mem pressure
net: axienet: Handle deferred probe on clock properly
cxgb4/chtls/cxgbit: Keeping the max ofld immediate data size same in cxgb4 and ulds
b43: N-PHY: Fix the update of coef for the PHY revision >= 3case
bpf: Clear subreg_def for global function return values
ibmvnic: add memory barrier to protect long term buffer
ibmvnic: skip send_request_unmap for timeout reset
net: dsa: felix: perform teardown in reverse order of setup
net: dsa: felix: don't deinitialize unused ports
net: phy: mscc: adding LCPLL reset to VSC8514
net: amd-xgbe: Reset the PHY rx data path when mailbox command timeout
net: amd-xgbe: Fix NETDEV WATCHDOG transmit queue timeout warning
net: amd-xgbe: Reset link when the link never comes back
net: amd-xgbe: Fix network fluctuations when using 1G BELFUSE SFP
net: mvneta: Remove per-cpu queue mapping for Armada 3700
net: enetc: fix destroyed phylink dereference during unbind
tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer
tty: implement read_iter
fbdev: aty: SPARC64 requires FB_ATY_CT
drm/gma500: Fix error return code in psb_driver_load()
gma500: clean up error handling in init
drm/fb-helper: Add missed unlocks in setcmap_legacy()
drm/panel: mantix: Tweak init sequence
drm/vc4: hdmi: Take into account the clock doubling flag in atomic_check
crypto: sun4i-ss - linearize buffers content must be kept
crypto: sun4i-ss - fix kmap usage
crypto: arm64/aes-ce - really hide slower algos when faster ones are enabled
hwrng: ingenic - Fix a resource leak in an error handling path
media: allegro: Fix use after free on error
kcsan: Rewrite kcsan_prandom_u32_max() without prandom_u32_state()
drm: rcar-du: Fix PM reference leak in rcar_cmm_enable()
drm: rcar-du: Fix crash when using LVDS1 clock for CRTC
drm: rcar-du: Fix the return check of of_parse_phandle and of_find_device_by_node
drm/amdgpu: Fix macro name _AMDGPU_TRACE_H_ in preprocessor if condition
MIPS: c-r4k: Fix section mismatch for loongson2_sc_init
MIPS: lantiq: Explicitly compare LTQ_EBU_PCC_ISTAT against 0
drm/virtio: make sure context is created in gem open
drm/fourcc: fix Amlogic format modifier masks
media: ipu3-cio2: Build only for x86
media: i2c: ov5670: Fix PIXEL_RATE minimum value
media: imx: Unregister csc/scaler only if registered
media: imx: Fix csc/scaler unregister
media: mtk-vcodec: fix error return code in vdec_vp9_decode()
media: camss: missing error code in msm_video_register()
media: vsp1: Fix an error handling path in the probe function
media: em28xx: Fix use-after-free in em28xx_alloc_urbs
media: media/pci: Fix memleak in empress_init
media: tm6000: Fix memleak in tm6000_start_stream
media: aspeed: fix error return code in aspeed_video_setup_video()
ASoC: cs42l56: fix up error handling in probe
ASoC: qcom: qdsp6: Move frontend AIFs to q6asm-dai
evm: Fix memleak in init_desc
crypto: bcm - Rename struct device_private to bcm_device_private
sched/fair: Avoid stale CPU util_est value for schedutil in task dequeue
drm/sun4i: tcon: fix inverted DCLK polarity
media: imx7: csi: Fix regression for parallel cameras on i.MX6UL
media: imx7: csi: Fix pad link validation
media: ti-vpe: cal: fix write to unallocated memory
MIPS: properly stop .eh_frame generation
MIPS: Compare __SYNC_loongson3_war against 0
drm/tegra: Fix reference leak when pm_runtime_get_sync() fails
drm/amdgpu: toggle on DF Cstate after finishing xgmi injection
bsg: free the request before return error code
macintosh/adb-iop: Use big-endian autopoll mask
drm/amd/display: Fix 10/12 bpc setup in DCE output bit depth reduction.
drm/amd/display: Fix HDMI deep color output for DCE 6-11.
media: software_node: Fix refcounts in software_node_get_next_child()
media: lmedm04: Fix misuse of comma
media: vidtv: psi: fix missing crc for PMT
media: atomisp: Fix a buffer overflow in debug code
media: qm1d1c0042: fix error return code in qm1d1c0042_init()
media: cx25821: Fix a bug when reallocating some dma memory
media: mtk-vcodec: fix argument used when DEBUG is defined
media: pxa_camera: declare variable when DEBUG is defined
media: uvcvideo: Accept invalid bFormatIndex and bFrameIndex values
sched/eas: Don't update misfit status if the task is pinned
f2fs: compress: fix potential deadlock
ASoC: qcom: lpass-cpu: Remove bit clock state check
ASoC: SOF: Intel: hda: cancel D0i3 work during runtime suspend
perf/arm-cmn: Fix PMU instance naming
perf/arm-cmn: Move IRQs when migrating context
mtd: parser: imagetag: fix error codes in bcm963xx_parse_imagetag_partitions()
crypto: talitos - Work around SEC6 ERRATA (AES-CTR mode data size error)
crypto: talitos - Fix ctr(aes) on SEC1
drm/nouveau: bail out of nouveau_channel_new if channel init fails
mm: proc: Invalidate TLB after clearing soft-dirty page state
ata: ahci_brcm: Add back regulators management
ASoC: cpcap: fix microphone timeslot mask
ASoC: codecs: add missing max_register in regmap config
mtd: parsers: afs: Fix freeing the part name memory in failure
f2fs: fix to avoid inconsistent quota data
drm/amdgpu: Prevent shift wrapping in amdgpu_read_mask()
f2fs: fix a wrong condition in __submit_bio
ASoC: qcom: Fix typo error in HDMI regmap config callbacks
KVM: nSVM: Don't strip host's C-bit from guest's CR3 when reading PDPTRs
drm/mediatek: Check if fb is null
Drivers: hv: vmbus: Avoid use-after-free in vmbus_onoffer_rescind()
ASoC: Intel: sof_sdw: add missing TGL_HDMI quirk for Dell SKU 0A5E
ASoC: Intel: sof_sdw: add missing TGL_HDMI quirk for Dell SKU 0A3E
locking/lockdep: Avoid unmatched unlock
ASoC: qcom: lpass: Fix i2s ctl register bit map
ASoC: rt5682: Fix panic in rt5682_jack_detect_handler happening during system shutdown
ASoC: SOF: debug: Fix a potential issue on string buffer termination
btrfs: clarify error returns values in __load_free_space_cache
btrfs: fix double accounting of ordered extent for subpage case in btrfs_invalidapge
KVM: x86: Restore all 64 bits of DR6 and DR7 during RSM on x86-64
s390/zcrypt: return EIO when msg retry limit reached
drm/vc4: hdmi: Move hdmi reset to bind
drm/vc4: hdmi: Fix register offset with longer CEC messages
drm/vc4: hdmi: Fix up CEC registers
drm/vc4: hdmi: Restore cec physical address on reconnect
drm/vc4: hdmi: Compute the CEC clock divider from the clock rate
drm/vc4: hdmi: Update the CEC clock divider on HSM rate change
drm/lima: fix reference leak in lima_pm_busy
drm/dp_mst: Don't cache EDIDs for physical ports
hwrng: timeriomem - Fix cooldown period calculation
crypto: ecdh_helper - Ensure 'len >= secret.len' in decode_key()
io_uring: fix possible deadlock in io_uring_poll
nvmet-tcp: fix receive data digest calculation for multiple h2cdata PDUs
nvmet-tcp: fix potential race of tcp socket closing accept_work
nvme-multipath: set nr_zones for zoned namespaces
nvmet: remove extra variable in identify ns
nvmet: set status to 0 in case for invalid nsid
ASoC: SOF: sof-pci-dev: add missing Up-Extreme quirk
ima: Free IMA measurement buffer on error
ima: Free IMA measurement buffer after kexec syscall
ASoC: simple-card-utils: Fix device module clock
fs/jfs: fix potential integer overflow on shift of a int
jffs2: fix use after free in jffs2_sum_write_data()
ubifs: Fix memleak in ubifs_init_authentication
ubifs: replay: Fix high stack usage, again
ubifs: Fix error return code in alloc_wbufs()
irqchip/imx: IMX_INTMUX should not default to y, unconditionally
smp: Process pending softirqs in flush_smp_call_function_from_idle()
drm/amdgpu/display: remove hdcp_srm sysfs on device removal
capabilities: Don't allow writing ambiguous v3 file capabilities
HSI: Fix PM usage counter unbalance in ssi_hw_init
power: supply: cpcap: Add missing IRQF_ONESHOT to fix regression
clk: meson: clk-pll: fix initializing the old rate (fallback) for a PLL
clk: meson: clk-pll: make "ret" a signed integer
clk: meson: clk-pll: propagate the error from meson_clk_pll_set_rate()
selftests/powerpc: Make the test check in eeh-basic.sh posix compliant
regulator: qcom-rpmh-regulator: add pm8009-1 chip revision
arm64: dts: qcom: qrb5165-rb5: fix pm8009 regulators
quota: Fix memory leak when handling corrupted quota file
i2c: iproc: handle only slave interrupts which are enabled
i2c: iproc: update slave isr mask (ISR_MASK_SLAVE)
i2c: iproc: handle master read request
spi: cadence-quadspi: Abort read if dummy cycles required are too many
clk: sunxi-ng: h6: Fix CEC clock
clk: renesas: r8a779a0: Remove non-existent S2 clock
clk: renesas: r8a779a0: Fix parent of CBFUSA clock
HID: core: detect and skip invalid inputs to snto32()
RDMA/siw: Fix handling of zero-sized Read and Receive Queues.
dmaengine: fsldma: Fix a resource leak in the remove function
dmaengine: fsldma: Fix a resource leak in an error handling path of the probe function
dmaengine: owl-dma: Fix a resource leak in the remove function
dmaengine: hsu: disable spurious interrupt
mfd: bd9571mwv: Use devm_mfd_add_devices()
power: supply: cpcap-charger: Fix missing power_supply_put()
power: supply: cpcap-battery: Fix missing power_supply_put()
power: supply: cpcap-charger: Fix power_supply_put on null battery pointer
fdt: Properly handle "no-map" field in the memory region
of/fdt: Make sure no-map does not remove already reserved regions
RDMA/rtrs: Extend ibtrs_cq_qp_create
RDMA/rtrs-srv: Release lock before call into close_sess
RDMA/rtrs-srv: Use sysfs_remove_file_self for disconnect
RDMA/rtrs-clt: Set mininum limit when create QP
RDMA/rtrs: Call kobject_put in the failure path
RDMA/rtrs-srv: Fix missing wr_cqe
RDMA/rtrs-clt: Refactor the failure cases in alloc_clt
RDMA/rtrs-srv: Init wr_cnt as 1
power: reset: at91-sama5d2_shdwc: fix wkupdbc mask
rtc: s5m: select REGMAP_I2C
dmaengine: idxd: set DMA channel to be private
power: supply: fix sbs-charger build, needs REGMAP_I2C
clocksource/drivers/ixp4xx: Select TIMER_OF when needed
clocksource/drivers/mxs_timer: Add missing semicolon when DEBUG is defined
spi: imx: Don't print error on -EPROBEDEFER
RDMA/mlx5: Use the correct obj_id upon DEVX TIR creation
IB/mlx5: Add mutex destroy call to cap_mask_mutex mutex
clk: sunxi-ng: h6: Fix clock divider range on some clocks
platform/chrome: cros_ec_proto: Use EC_HOST_EVENT_MASK not BIT
platform/chrome: cros_ec_proto: Add LID and BATTERY to default mask
regulator: axp20x: Fix reference cout leak
watch_queue: Drop references to /dev/watch_queue
certs: Fix blacklist flag type confusion
regulator: s5m8767: Fix reference count leak
spi: atmel: Put allocated master before return
regulator: s5m8767: Drop regulators OF node reference
power: supply: axp20x_usb_power: Init work before enabling IRQs
power: supply: smb347-charger: Fix interrupt usage if interrupt is unavailable
regulator: core: Avoid debugfs: Directory ... already present! error
isofs: release buffer head before return
watchdog: intel-mid_wdt: Postpone IRQ handler registration till SCU is ready
auxdisplay: ht16k33: Fix refresh rate handling
objtool: Fix error handling for STD/CLD warnings
objtool: Fix retpoline detection in asm code
objtool: Fix ".cold" section suffix check for newer versions of GCC
scsi: lpfc: Fix ancient double free
iommu: Switch gather->end to the inclusive end
IB/umad: Return EIO in case of when device disassociated
IB/umad: Return EPOLLERR in case of when device disassociated
KVM: PPC: Make the VMX instruction emulation routines static
powerpc/47x: Disable 256k page size
powerpc/time: Enable sched clock for irqtime
mmc: owl-mmc: Fix a resource leak in an error handling path and in the remove function
mmc: sdhci-sprd: Fix some resource leaks in the remove function
mmc: usdhi6rol0: Fix a resource leak in the error handling path of the probe
mmc: renesas_sdhi_internal_dmac: Fix DMA buffer alignment from 8 to 128-bytes
ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores
i2c: qcom-geni: Store DMA mapping data in geni_i2c_dev struct
amba: Fix resource leak for drivers without .remove
iommu: Move iotlb_sync_map out from __iommu_map
iommu: Properly pass gfp_t in _iommu_map() to avoid atomic sleeping
IB/mlx5: Return appropriate error code instead of ENOMEM
IB/cm: Avoid a loop when device has 255 ports
tracepoint: Do not fail unregistering a probe due to memory failure
rtc: zynqmp: depend on HAS_IOMEM
perf tools: Fix DSO filtering when not finding a map for a sampled address
perf vendor events arm64: Fix Ampere eMag event typo
RDMA/rxe: Fix coding error in rxe_recv.c
RDMA/rxe: Fix coding error in rxe_rcv_mcast_pkt
RDMA/rxe: Correct skb on loopback path
spi: stm32: properly handle 0 byte transfer
mfd: altera-sysmgr: Fix physical address storing more
mfd: wm831x-auxadc: Prevent use after free in wm831x_auxadc_read_irq()
powerpc/pseries/dlpar: handle ibm, configure-connector delay status
powerpc/8xx: Fix software emulation interrupt
clk: qcom: gcc-msm8998: Fix Alpha PLL type for all GPLLs
kunit: tool: fix unit test cleanup handling
kselftests: dmabuf-heaps: Fix Makefile's inclusion of the kernel's usr/include dir
RDMA/hns: Fixed wrong judgments in the goto branch
RDMA/siw: Fix calculation of tx_valid_cpus size
RDMA/hns: Fix type of sq_signal_bits
RDMA/hns: Disable RQ inline by default
clk: divider: fix initialization with parent_hw
spi: pxa2xx: Fix the controller numbering for Wildcat Point
powerpc/uaccess: Avoid might_fault() when user access is enabled
powerpc/kuap: Restore AMR after replaying soft interrupts
regulator: qcom-rpmh: fix pm8009 ldo7
clk: aspeed: Fix APLL calculate formula from ast2600-A2
selftests/ftrace: Update synthetic event syntax errors
perf symbols: Use (long) for iterator for bfd symbols
regulator: bd718x7, bd71828, Fix dvs voltage levels
spi: dw: Avoid stack content exposure
spi: Skip zero-length transfers in spi_transfer_one_message()
printk: avoid prb_first_valid_seq() where possible
perf symbols: Fix return value when loading PE DSO
nfsd: register pernet ops last, unregister first
svcrdma: Hold private mutex while invoking rdma_accept()
ceph: fix flush_snap logic after putting caps
RDMA/hns: Fixes missing error code of CMDQ
RDMA/ucma: Fix use-after-free bug in ucma_create_uevent
RDMA/rtrs-srv: Fix stack-out-of-bounds
RDMA/rtrs: Only allow addition of path to an already established session
RDMA/rtrs-srv: fix memory leak by missing kobject free
RDMA/rtrs-srv-sysfs: fix missing put_device
RDMA/rtrs-srv: Do not pass a valid pointer to PTR_ERR()
Input: sur40 - fix an error code in sur40_probe()
perf record: Fix continue profiling after draining the buffer
perf intel-pt: Fix missing CYC processing in PSB
perf intel-pt: Fix premature IPC
perf intel-pt: Fix IPC with CYC threshold
perf test: Fix unaligned access in sample parsing test
Input: elo - fix an error code in elo_connect()
sparc64: only select COMPAT_BINFMT_ELF if BINFMT_ELF is set
sparc: fix led.c driver when PROC_FS is not enabled
Input: zinitix - fix return type of zinitix_init_touch()
ARM: 9065/1: OABI compat: fix build when EPOLL is not enabled
misc: eeprom_93xx46: Fix module alias to enable module autoprobe
phy: rockchip-emmc: emmc_phy_init() always return 0
phy: cadence-torrent: Fix error code in cdns_torrent_phy_probe()
misc: eeprom_93xx46: Add module alias to avoid breaking support for non device tree users
PCI: rcar: Always allocate MSI addresses in 32bit space
soundwire: cadence: fix ACK/NAK handling
pwm: rockchip: Enable APB clock during register access while probing
pwm: rockchip: rockchip_pwm_probe(): Remove superfluous clk_unprepare()
pwm: rockchip: Eliminate potential race condition when probing
PCI: xilinx-cpm: Fix reference count leak on error path
VMCI: Use set_page_dirty_lock() when unregistering guest memory
PCI: Align checking of syscall user config accessors
mei: hbm: call mei_set_devstate() on hbm stop response
drm/msm: Fix MSM_INFO_GET_IOVA with carveout
drm/msm/dsi: Correct io_start for MSM8994 (20nm PHY)
drm/msm/mdp5: Fix wait-for-commit for cmd panels
drm/msm: Fix race of GPU init vs timestamp power management.
drm/msm: Fix races managing the OOB state for timestamp vs timestamps.
drm/msm/dp: trigger unplug event in msm_dp_display_disable
vfio/iommu_type1: Populate full dirty when detach non-pinned group
vfio/iommu_type1: Fix some sanity checks in detach group
vfio-pci/zdev: fix possible segmentation fault issue
ext4: fix potential htree index checksum corruption
phy: USB_LGM_PHY should depend on X86
coresight: etm4x: Skip accessing TRCPDCR in save/restore
nvmem: core: Fix a resource leak on error in nvmem_add_cells_from_of()
nvmem: core: skip child nodes not matching binding
soundwire: bus: use sdw_update_no_pm when initializing a device
soundwire: bus: use sdw_write_no_pm when setting the bus scale registers
soundwire: export sdw_write/read_no_pm functions
soundwire: bus: fix confusion on device used by pm_runtime
misc: fastrpc: fix incorrect usage of dma_map_sgtable
remoteproc/mediatek: acknowledge watchdog IRQ after handled
regmap: sdw: use _no_pm functions in regmap_read/write
ext: EXT4_KUNIT_TESTS should depend on EXT4_FS instead of selecting it
mailbox: sprd: correct definition of SPRD_OUTBOX_FIFO_FULL
device-dax: Fix default return code of range_parse()
PCI: pci-bridge-emul: Fix array overruns, improve safety
PCI: cadence: Fix DMA range mapping early return error
i40e: Fix flow for IPv6 next header (extension header)
i40e: Add zero-initialization of AQ command structures
i40e: Fix overwriting flow control settings during driver loading
i40e: Fix addition of RX filters after enabling FW LLDP agent
i40e: Fix VFs not created
Take mmap lock in cacheflush syscall
nios2: fixed broken sys_clone syscall
i40e: Fix add TC filter for IPv6
octeontx2-af: Fix an off by one in rvu_dbg_qsize_write()
pwm: iqs620a: Fix overflow and optimize calculations
vfio/type1: Use follow_pte()
ice: report correct max number of TCs
ice: Account for port VLAN in VF max packet size calculation
ice: Fix state bits on LLDP mode switch
ice: update the number of available RSS queues
net: stmmac: fix CBS idleslope and sendslope calculation
net/mlx4_core: Add missed mlx4_free_cmd_mailbox()
PCI: rockchip: Make 'ep-gpios' DT property optional
vxlan: move debug check after netdev unregister
wireguard: device: do not generate ICMP for non-IP packets
wireguard: kconfig: use arm chacha even with no neon
ocfs2: fix a use after free on error
mm: memcontrol: fix NR_ANON_THPS accounting in charge moving
mm: memcontrol: fix slub memory accounting
mm/memory.c: fix potential pte_unmap_unlock pte error
mm/hugetlb: fix potential double free in hugetlb_register_node() error path
mm/hugetlb: suppress wrong warning info when alloc gigantic page
mm/compaction: fix misbehaviors of fast_find_migrateblock()
r8169: fix jumbo packet handling on RTL8168e
NFSv4: Fixes for nfs4_bitmask_adjust()
KVM: SVM: Intercept INVPCID when it's disabled to inject #UD
KVM: x86/mmu: Expand collapsible SPTE zap for TDP MMU to ZONE_DEVICE and HugeTLB pages
arm64: Add missing ISB after invalidating TLB in __primary_switch
i2c: brcmstb: Fix brcmstd_send_i2c_cmd condition
i2c: exynos5: Preserve high speed master code
mm,thp,shmem: make khugepaged obey tmpfs mount flags
mm: fix memory_failure() handling of dax-namespace metadata
mm/rmap: fix potential pte_unmap on an not mapped pte
proc: use kvzalloc for our kernel buffer
csky: Fix a size determination in gpr_get()
scsi: bnx2fc: Fix Kconfig warning & CNIC build errors
scsi: sd: sd_zbc: Don't pass GFP_NOIO to kvcalloc
block: reopen the device in blkdev_reread_part
ide/falconide: Fix module unload
scsi: sd: Fix Opal support
blk-settings: align max_sectors on "logical_block_size" boundary
soundwire: intel: fix possible crash when no device is detected
ACPI: property: Fix fwnode string properties matching
ACPI: configfs: add missing check after configfs_register_default_group()
cpufreq: ACPI: Set cpuinfo.max_freq directly if max boost is known
HID: logitech-dj: add support for keyboard events in eQUAD step 4 Gaming
HID: wacom: Ignore attempts to overwrite the touch_max value from HID
Input: raydium_ts_i2c - do not send zero length
Input: xpad - add support for PowerA Enhanced Wired Controller for Xbox Series X|S
Input: joydev - prevent potential read overflow in ioctl
Input: i8042 - add ASUS Zenbook Flip to noselftest list
media: mceusb: Fix potential out-of-bounds shift
USB: serial: option: update interface mapping for ZTE P685M
usb: musb: Fix runtime PM race in musb_queue_resume_work
usb: dwc3: gadget: Fix setting of DEPCFG.bInterval_m1
usb: dwc3: gadget: Fix dep->interval for fullspeed interrupt
USB: serial: ftdi_sio: fix FTX sub-integer prescaler
USB: serial: pl2303: fix line-speed handling on newer chips
USB: serial: mos7840: fix error code in mos7840_write()
USB: serial: mos7720: fix error code in mos7720_write()
phy: lantiq: rcu-usb2: wait after clock enable
ALSA: fireface: fix to parse sync status register of latter protocol
ALSA: hda: Add another CometLake-H PCI ID
ALSA: hda/hdmi: Drop bogus check at closing a stream
ALSA: hda/realtek: modify EAPD in the ALC886
ALSA: hda/realtek: Quirk for HP Spectre x360 14 amp setup
MIPS: Ingenic: Disable HPTLB for D0 XBurst CPUs too
MIPS: Support binutils configured with --enable-mips-fix-loongson3-llsc=yes
MIPS: VDSO: Use CLANG_FLAGS instead of filtering out '--target='
Revert "MIPS: Octeon: Remove special handling of CONFIG_MIPS_ELF_APPENDED_DTB=y"
Revert "bcache: Kill btree_io_wq"
bcache: Give btree_io_wq correct semantics again
bcache: Move journal work to new flush wq
Revert "drm/amd/display: Update NV1x SR latency values"
drm/amd/display: Add FPU wrappers to dcn21_validate_bandwidth()
drm/amd/display: Remove Assert from dcn10_get_dig_frontend
drm/amd/display: Add vupdate_no_lock interrupts for DCN2.1
drm/amdkfd: Fix recursive lock warnings
drm/amdgpu: Set reference clock to 100Mhz on Renoir (v2)
drm/nouveau/kms: handle mDP connectors
drm/modes: Switch to 64bit maths to avoid integer overflow
drm/sched: Cancel and flush all outstanding jobs before finish.
drm/panel: kd35t133: allow using non-continuous dsi clock
drm/rockchip: Require the YTR modifier for AFBC
ASoC: siu: Fix build error by a wrong const prefix
selinux: fix inconsistency between inode_getxattr and inode_listsecurity
erofs: initialized fields can only be observed after bit is set
tpm_tis: Fix check_locality for correct locality acquisition
tpm_tis: Clean up locality release
KEYS: trusted: Fix incorrect handling of tpm_get_random()
KEYS: trusted: Fix migratable=1 failing
KEYS: trusted: Reserve TPM for seal and unseal operations
btrfs: do not cleanup upper nodes in btrfs_backref_cleanup_node
btrfs: do not warn if we can't find the reloc root when looking up backref
btrfs: add asserts for deleting backref cache nodes
btrfs: abort the transaction if we fail to inc ref in btrfs_copy_root
btrfs: fix reloc root leak with 0 ref reloc roots on recovery
btrfs: splice remaining dirty_bg's onto the transaction dirty bg list
btrfs: handle space_info::total_bytes_pinned inside the delayed ref itself
btrfs: account for new extents being deleted in total_bytes_pinned
btrfs: fix extent buffer leak on failure to copy root
drm/i915/gt: Flush before changing register state
drm/i915/gt: Correct surface base address for renderclear
crypto: arm64/sha - add missing module aliases
crypto: aesni - prevent misaligned buffers on the stack
crypto: michael_mic - fix broken misalignment handling
crypto: sun4i-ss - checking sg length is not sufficient
crypto: sun4i-ss - IV register does not work on A10 and A13
crypto: sun4i-ss - handle BigEndian for cipher
crypto: sun4i-ss - initialize need_fallback
soc: samsung: exynos-asv: don't defer early on not-supported SoCs
soc: samsung: exynos-asv: handle reading revision register error
seccomp: Add missing return in non-void function
arm64: ptrace: Fix seccomp of traced syscall -1 (NO_SYSCALL)
misc: rtsx: init of rts522a add OCP power off when no card is present
drivers/misc/vmw_vmci: restrict too big queue size in qp_host_alloc_queue
pstore: Fix typo in compression option name
dts64: mt7622: fix slow sd card access
arm64: dts: agilex: fix phy interface bit shift for gmac1 and gmac2
staging/mt7621-dma: mtk-hsdma.c->hsdma-mt7621.c
staging: gdm724x: Fix DMA from stack
staging: rtl8188eu: Add Edimax EW-7811UN V2 to device table
floppy: reintroduce O_NDELAY fix
media: i2c: max9286: fix access to unallocated memory
media: ir_toy: add another IR Droid device
media: ipu3-cio2: Fix mbus_code processing in cio2_subdev_set_fmt()
media: marvell-ccic: power up the device on mclk enable
media: smipcie: fix interrupt handling and IR timeout
x86/virt: Eat faults on VMXOFF in reboot flows
x86/reboot: Force all cpus to exit VMX root if VMX is supported
x86/fault: Fix AMD erratum #91 errata fixup for user code
x86/entry: Fix instrumentation annotation
powerpc/prom: Fix "ibm,arch-vec-5-platform-support" scan
rcu: Pull deferred rcuog wake up to rcu_eqs_enter() callers
rcu/nocb: Perform deferred wake up before last idle's need_resched() check
kprobes: Fix to delay the kprobes jump optimization
arm64: Extend workaround for erratum 1024718 to all versions of Cortex-A55
iommu/arm-smmu-qcom: Fix mask extraction for bootloader programmed SMRs
arm64: kexec_file: fix memory leakage in create_dtb() when fdt_open_into() fails
arm64: uprobe: Return EOPNOTSUPP for AARCH32 instruction probing
arm64 module: set plt* section addresses to 0x0
arm64: spectre: Prevent lockdep splat on v4 mitigation enable path
riscv: Disable KSAN_SANITIZE for vDSO
watchdog: qcom: Remove incorrect usage of QCOM_WDT_ENABLE_IRQ
watchdog: mei_wdt: request stop on unregister
coresight: etm4x: Handle accesses to TRCSTALLCTLR
mtd: spi-nor: sfdp: Fix last erase region marking
mtd: spi-nor: sfdp: Fix wrong erase type bitmask for overlaid region
mtd: spi-nor: core: Fix erase type discovery for overlaid region
mtd: spi-nor: core: Add erase size check for erase command initialization
mtd: spi-nor: hisi-sfc: Put child node np on error path
fs/affs: release old buffer head on error path
seq_file: document how per-entry resources are managed.
x86: fix seq_file iteration for pat/memtype.c
mm: memcontrol: fix swap undercounting in cgroup2
mm: memcontrol: fix get_active_memcg return value
hugetlb: fix update_and_free_page contig page struct assumption
hugetlb: fix copy_huge_page_from_user contig page struct assumption
mm/vmscan: restore zone_reclaim_mode ABI
mm, compaction: make fast_isolate_freepages() stay within zone
KVM: nSVM: fix running nested guests when npt=0
nvmem: qcom-spmi-sdam: Fix uninitialized pdev pointer
module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols
mmc: sdhci-esdhc-imx: fix kernel panic when remove module
mmc: sdhci-pci-o2micro: Bug fix for SDR104 HW tuning failure
powerpc/32: Preserve cr1 in exception prolog stack check to fix build error
powerpc/kexec_file: fix FDT size estimation for kdump kernel
powerpc/32s: Add missing call to kuep_lock on syscall entry
spmi: spmi-pmic-arb: Fix hw_irq overflow
mei: fix transfer over dma with extended header
mei: me: emmitsburg workstation DID
mei: me: add adler lake point S DID
mei: me: add adler lake point LP DID
gpio: pcf857x: Fix missing first interrupt
mfd: gateworks-gsc: Fix interrupt type
printk: fix deadlock when kernel panic
exfat: fix shift-out-of-bounds in exfat_fill_super()
zonefs: Fix file size of zones in full condition
kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE
thermal: cpufreq_cooling: freq_qos_update_request() returns < 0 on error
cpufreq: qcom-hw: drop devm_xxx() calls from init/exit hooks
cpufreq: intel_pstate: Change intel_pstate_get_hwp_max() argument
cpufreq: intel_pstate: Get per-CPU max freq via MSR_HWP_CAPABILITIES if available
proc: don't allow async path resolution of /proc/thread-self components
s390/vtime: fix inline assembly clobber list
virtio/s390: implement virtio-ccw revision 2 correctly
um: mm: check more comprehensively for stub changes
um: defer killing userspace on page table update failures
irqchip/loongson-pch-msi: Use bitmap_zalloc() to allocate bitmap
f2fs: fix out-of-repair __setattr_copy()
f2fs: enforce the immutable flag on open files
f2fs: flush data when enabling checkpoint back
sparc32: fix a user-triggerable oops in clear_user()
spi: fsl: invert spisel_boot signal on MPC8309
spi: spi-synquacer: fix set_cs handling
gfs2: fix glock confusion in function signal_our_withdraw
gfs2: Don't skip dlm unlock if glock has an lvb
gfs2: Lock imbalance on error path in gfs2_recover_one
gfs2: Recursive gfs2_quota_hold in gfs2_iomap_end
dm: fix deadlock when swapping to encrypted device
dm table: fix iterate_devices based device capability checks
dm table: fix DAX iterate_devices based device capability checks
dm table: fix zoned iterate_devices based device capability checks
dm writecache: fix performance degradation in ssd mode
dm writecache: return the exact table values that were set
dm writecache: fix writing beyond end of underlying device when shrinking
dm era: Recover committed writeset after crash
dm era: Update in-core bitset after committing the metadata
dm era: Verify the data block size hasn't changed
dm era: Fix bitset memory leaks
dm era: Use correct value size in equality function of writeset tree
dm era: Reinitialize bitset cache before digesting a new writeset
dm era: only resize metadata in preresume
drm/i915: Reject 446-480MHz HDMI clock on GLK
kgdb: fix to kill breakpoints on initmem after boot
ipv6: silence compilation warning for non-IPV6 builds
net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending
wireguard: selftests: test multiple parallel streams
wireguard: queueing: get rid of per-peer ring buffers
net: sched: fix police ext initialization
net: qrtr: Fix memory leak in qrtr_tun_open
net_sched: fix RTNL deadlock again caused by request_module()
ARM: dts: aspeed: Add LCLK to lpc-snoop
Linux 5.10.20
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I3fbcecd9413ce212dac68d5cc800c9457feba56a
commit 519983645a9f2ec339cabfa0c6ef7b09be985dd0 upstream.
I went to go add a new RECLAIM_* mode for the zone_reclaim_mode sysctl.
Like a good kernel developer, I also went to go update the
documentation. I noticed that the bits in the documentation didn't
match the bits in the #defines.
The VM never explicitly checks the RECLAIM_ZONE bit. The bit is,
however implicitly checked when checking 'node_reclaim_mode==0'. The
RECLAIM_ZONE #define was removed in a cleanup. That, by itself is fine.
But, when the bit was removed (bit 0) the _other_ bit locations also got
changed. That's not OK because the bit values are documented to mean
one specific thing. Users surely do not expect the meaning to change
from kernel to kernel.
The end result is that if someone had a script that did:
sysctl vm.zone_reclaim_mode=1
it would have gone from enabling node reclaim for clean unmapped pages
to writing out pages during node reclaim after the commit in question.
That's not great.
Put the bits back the way they were and add a comment so something like
this is a bit harder to do again. Update the documentation to make it
clear that the first bit is ignored.
Link: https://lkml.kernel.org/r/20210219172555.FF0CDF23@viggo.jf.intel.com
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Fixes: 648b5cf368 ("mm/vmscan: remove unused RECLAIM_OFF/RECLAIM_ZONE")
Reviewed-by: Ben Widawsky <ben.widawsky@intel.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Daniel Wagner <dwagner@suse.de>
Cc: "Tobin C. Harding" <tobin@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Qian Cai <cai@lca.pw>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix the following warning by declaring kswapd_threads as static:
mm/vmscan.c:175:5: sparse: symbol 'kswapd_threads' was not declared.
Fixes: 0d61a651e4 ("ANDROID: vmscan: Support multiple kswapd threads per node")
Bug: 171351667
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I6ccb1e0e0f597fda27ed6893d254a77341139084
Page replacement is handled in the Linux Kernel in one of two ways:
1) Asynchronously via kswapd
2) Synchronously, via direct reclaim
At page allocation time the allocating task is immediately given a page
from the zone free list allowing it to go right back to work doing
whatever it was doing; Probably directly or indirectly executing business
logic.
Just prior to satisfying the allocation, free pages is checked to see if
it has reached the zone low watermark and if so, kswapd is awakened.
Kswapd will start scanning pages looking for inactive pages to evict to
make room for new page allocations. The work of kswapd allows tasks to
continue allocating memory from their respective zone free list without
incurring any delay.
When the demand for free pages exceeds the rate that kswapd tasks can
supply them, page allocation works differently. Once the allocating task
finds that the number of free pages is at or below the zone min watermark,
the task will no longer pull pages from the free list. Instead, the task
will run the same CPU-bound routines as kswapd to satisfy its own
allocation by scanning and evicting pages. This is called a direct reclaim.
The time spent performing a direct reclaim can be substantial, often
taking tens to hundreds of milliseconds for small order0 allocations to
half a second or more for order9 huge-page allocations. In fact, kswapd is
not actually required on a linux system. It exists for the sole purpose of
optimizing performance by preventing direct reclaims.
When memory shortfall is sufficient to trigger direct reclaims, they can
occur in any task that is running on the system. A single aggressive
memory allocating task can set the stage for collateral damage to occur in
small tasks that rarely allocate additional memory. Consider the impact of
injecting an additional 100ms of latency when nscd allocates memory to
facilitate caching of a DNS query.
The presence of direct reclaims 10 years ago was a fairly reliable
indicator that too much was being asked of a Linux system. Kswapd was
likely wasting time scanning pages that were ineligible for eviction.
Adding RAM or reducing the working set size would usually make the problem
go away. Since then hardware has evolved to bring a new struggle for
kswapd. Storage speeds have increased by orders of magnitude while CPU
clock speeds stayed the same or even slowed down in exchange for more
cores per package. This presents a throughput problem for a single
threaded kswapd that will get worse with each generation of new hardware.
Test Details
NOTE: The tests below were run with shadow entries disabled. See the
associated patch and cover letter for details
The tests below were designed with the assumption that a kswapd bottleneck
is best demonstrated using filesystem reads. This way, the inactive list
will be full of clean pages, simplifying the analysis and allowing kswapd
to achieve the highest possible steal rate. Maximum steal rates for kswapd
are likely to be the same or lower for any other mix of page types on the
system.
Tests were run on a 2U Oracle X7-2L with 52 Intel Xeon Skylake 2GHz cores,
756GB of RAM and 8 x 3.6 TB NVMe Solid State Disk drives. Each drive has
an XFS file system mounted separately as /d0 through /d7. SSD drives
require multiple concurrent streams to show their potential, so I created
eleven 250GB zero-filled files on each drive so that I could test with
parallel reads.
The test script runs in multiple stages. At each stage, the number of dd
tasks run concurrently is increased by 2. I did not include all of the
test output for brevity.
During each stage dd tasks are launched to read from each drive in a round
robin fashion until the specified number of tasks for the stage has been
reached. Then iostat, vmstat and top are started in the background with 10
second intervals. After five minutes, all of the dd tasks are killed and
the iostat, vmstat and top output is parsed in order to report the
following:
CPU consumption
- sy - aggregate kernel mode CPU consumption from vmstat output. The value
doesn't tend to fluctuate much so I just grab the highest value.
Each sample is averaged over 10 seconds
- dd_cpu - for all of the dd tasks averaged across the top samples since
there is a lot of variation.
Throughput
- in Kbytes
- Command is iostat -x -d 10 -g total
This first test performs reads using O_DIRECT in order to show the maximum
throughput that can be obtained using these drives. It also demonstrates
how rapidly throughput scales as the number of dd tasks are increased.
The dd command for this test looks like this:
Command Used: dd iflag=direct if=/d${i}/$n of=/dev/null bs=4M
Test #1: Direct IO
dd sy dd_cpu throughput
6 0 2.33 14726026.40
10 1 2.95 19954974.80
16 1 2.63 24419689.30
22 1 2.63 25430303.20
28 1 2.91 26026513.20
34 1 2.53 26178618.00
40 1 2.18 26239229.20
46 1 1.91 26250550.40
52 1 1.69 26251845.60
58 1 1.54 26253205.60
64 1 1.43 26253780.80
70 1 1.31 26254154.80
76 1 1.21 26253660.80
82 1 1.12 26254214.80
88 1 1.07 26253770.00
90 1 1.04 26252406.40
Throughput was close to peak with only 22 dd tasks. Very little system CPU
was consumed as expected as the drives DMA directly into the user address
space when using direct IO.
In this next test, the iflag=direct option is removed and we only run the
test until the pgscan_kswapd from /proc/vmstat starts to increment. At
that point metrics are parsed and reported and the pagecache contents are
dropped prior to the next test. Lather, rinse, repeat.
Test #2: standard file system IO, no page replacement
dd sy dd_cpu throughput
6 2 28.78 5134316.40
10 3 31.40 8051218.40
16 5 34.73 11438106.80
22 7 33.65 14140596.40
28 8 31.24 16393455.20
34 10 29.88 18219463.60
40 11 28.33 19644159.60
46 11 25.05 20802497.60
52 13 26.92 22092370.00
58 13 23.29 22884881.20
64 14 23.12 23452248.80
70 15 22.40 23916468.00
76 16 22.06 24328737.20
82 17 20.97 24718693.20
88 16 18.57 25149404.40
90 16 18.31 25245565.60
Each read has to pause after the buffer in kernel space is populated while
those pages are added to the pagecache and copied into the user address
space. For this reason, more parallel streams are required to achieve peak
throughput. The copy operation consumes substantially more CPU than direct
IO as expected.
The next test measures throughput after kswapd starts running. This is the
same test only we wait for kswapd to wake up before we start collecting
metrics. The script actually keeps track of a few things that were not
mentioned earlier. It tracks direct reclaims and page scans by watching
the metrics in /proc/vmstat. CPU consumption for kswapd is tracked the
same way it is tracked for dd.
Since the test is 100% reads, you can assume that the page steal rate for
kswapd and direct reclaims is almost identical to the scan rate.
Test #3: 1 kswapd thread per node
dd sy dd_cpu kswapd0 kswapd1 throughput dr pgscan_kswapd pgscan_direct
10 4 26.07 28.56 27.03 7355924.40 0 459316976 0
16 7 34.94 69.33 69.66 10867895.20 0 872661643 0
22 10 36.03 93.99 99.33 13130613.60 489 1037654473 11268334
28 10 30.34 95.90 98.60 14601509.60 671 1182591373 15429142
34 14 34.77 97.50 99.23 16468012.00 10850 1069005644 249839515
40 17 36.32 91.49 97.11 17335987.60 18903 975417728 434467710
46 19 38.40 90.54 91.61 17705394.40 25369 855737040 582427973
52 22 40.88 83.97 83.70 17607680.40 31250 709532935 724282458
58 25 40.89 82.19 80.14 17976905.60 35060 657796473 804117540
64 28 41.77 73.49 75.20 18001910.00 39073 561813658 895289337
70 33 45.51 63.78 64.39 17061897.20 44523 379465571 1020726436
76 36 46.95 57.96 60.32 16964459.60 47717 291299464 1093172384
82 39 47.16 55.43 56.16 16949956.00 49479 247071062 1134163008
88 42 47.41 53.75 47.62 16930911.20 51521 195449924 1180442208
90 43 47.18 51.40 50.59 16864428.00 51618 190758156 1183203901
In the previous test where kswapd was not involved, the system-wide kernel
mode CPU consumption with 90 dd tasks was 16%. In this test CPU consumption
with 90 tasks is at 43%. With 52 cores, and two kswapd tasks (one per NUMA
node), kswapd can only be responsible for a little over 4% of the increase.
The rest is likely caused by 51,618 direct reclaims that scanned 1.2
billion pages over the five minute time period of the test.
Same test, more kswapd tasks:
Test #4: 4 kswapd threads per node
dd sy dd_cpu kswapd0 kswapd1 throughput dr pgscan_kswapd pgscan_direct
10 5 27.09 16.65 14.17 7842605.60 0 459105291 0
16 10 37.12 26.02 24.85 11352920.40 15 920527796 358515
22 11 36.94 37.13 35.82 13771869.60 0 1132169011 0
28 13 35.23 48.43 46.86 16089746.00 0 1312902070 0
34 15 33.37 53.02 55.69 18314856.40 0 1476169080 0
40 19 35.90 69.60 64.41 19836126.80 0 1629999149 0
46 22 36.82 88.55 57.20 20740216.40 0 1708478106 0
52 24 34.38 93.76 68.34 21758352.00 0 1794055559 0
58 24 30.51 79.20 82.33 22735594.00 0 1872794397 0
64 26 30.21 97.12 76.73 23302203.60 176 1916593721 4206821
70 33 32.92 92.91 92.87 23776588.00 3575 1817685086 85574159
76 37 31.62 91.20 89.83 24308196.80 4752 1812262569 113981763
82 29 25.53 93.23 92.33 24802791.20 306 2032093122 7350704
88 43 37.12 76.18 77.01 25145694.40 20310 1253204719 487048202
90 42 38.56 73.90 74.57 22516787.60 22774 1193637495 545463615
By increasing the number of kswapd threads, throughput increased by ~50%
while kernel mode CPU utilization decreased or stayed the same, likely due
to a decrease in the number of parallel tasks at any given time doing page
replacement.
Signed-off-by: Buddy Lumpkin <buddy.lumpkin@oracle.com>
Bug: 171351667
Link: https://lore.kernel.org/lkml/1522661062-39745-1-git-send-email-buddy.lumpkin@oracle.com
[charante@codeaurora.org]: Changes made to select number of kswapds through uapi
Change-Id: I8425cab7f40cbeaf65af0ea118c1a9ac7da0930e
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
[ Upstream commit feb889fb40fafc6933339cf1cca8f770126819fb ]
So technically there is nothing wrong with adding a pinned page to the
swap cache, but the pinning obviously means that the page can't actually
be free'd right now anyway, so it's a bit pointless.
However, the real problem is not with it being a bit pointless: the real
issue is that after we've added it to the swap cache, we'll try to unmap
the page. That will succeed, because the code in mm/rmap.c doesn't know
or care about pinned pages.
Even the unmapping isn't fatal per se, since the page will stay around
in memory due to the pinning, and we do hold the connection to it using
the swap cache. But when we then touch it next and take a page fault,
the logic in do_swap_page() will map it back into the process as a
possibly read-only page, and we'll then break the page association on
the next COW fault.
Honestly, this issue could have been fixed in any of those other places:
(a) we could refuse to unmap a pinned page (which makes conceptual
sense), or (b) we could make sure to re-map a pinned page writably in
do_swap_page(), or (c) we could just make do_wp_page() not COW the
pinned page (which was what we historically did before that "mm:
do_wp_page() simplification" commit).
But while all of them are equally valid models for breaking this chain,
not putting pinned pages into the swap cache in the first place is the
simplest one by far.
It's also the safest one: the reason why do_wp_page() was changed in the
first place was that getting the "can I re-use this page" wrong is so
fraught with errors. If you do it wrong, you end up with an incorrectly
shared page.
As a result, using "page_maybe_dma_pinned()" in either do_wp_page() or
do_swap_page() would be a serious bug since it is only a (very good)
heuristic. Re-using the page requires a hard black-and-white rule with
no room for ambiguity.
In contrast, saying "this page is very likely dma pinned, so let's not
add it to the swap cache and try to unmap it" is an obviously safe thing
to do, and if the heuristic might very rarely be a false positive, no
harm is done.
Fixes: 09854ba94c ("mm: do_wp_page() simplification")
Reported-and-tested-by: Martin Raiber <martin@urbackup.org>
Cc: Pavel Begunkov <asml.silence@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 013339df116c2ee0d796dd8bfb8f293a2030c063 ]
Since commit 369ea8242c ("mm/rmap: update to new mmu_notifier semantic
v2"), the code to check the secondary MMU's page table access bit is
broken for !(TTU_IGNORE_ACCESS) because the page is unmapped from the
secondary MMU's page table before the check. More specifically for those
secondary MMUs which unmap the memory in
mmu_notifier_invalidate_range_start() like kvm.
However memory reclaim is the only user of !(TTU_IGNORE_ACCESS) or the
absence of TTU_IGNORE_ACCESS and it explicitly performs the page table
access check before trying to unmap the page. So, at worst the reclaim
will miss accesses in a very short window if we remove page table access
check in unmapping code.
There is an unintented consequence of !(TTU_IGNORE_ACCESS) for the memcg
reclaim. From memcg reclaim the page_referenced() only account the
accesses from the processes which are in the same memcg of the target page
but the unmapping code is considering accesses from all the processes, so,
decreasing the effectiveness of memcg reclaim.
The simplest solution is to always assume TTU_IGNORE_ACCESS in unmapping
code.
Link: https://lkml.kernel.org/r/20201104231928.1494083-1-shakeelb@google.com
Fixes: 369ea8242c ("mm/rmap: update to new mmu_notifier semantic v2")
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Previously the negated unsigned long would be cast back to signed long
which would have the correct negative value. After commit 730ec8c01a
("mm/vmscan.c: change prototype for shrink_page_list"), the large
unsigned int converts to a large positive signed long.
Symptoms include CMA allocations hanging forever holding the cma_mutex
due to alloc_contig_range->...->isolate_migratepages_block waiting
forever in "while (unlikely(too_many_isolated(pgdat)))".
[akpm@linux-foundation.org: fix -stat.nr_lazyfree_fail as well, per Michal]
Fixes: 730ec8c01a ("mm/vmscan.c: change prototype for shrink_page_list")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vaneet Narang <v.narang@samsung.com>
Cc: Maninder Singh <maninder1.s@samsung.com>
Cc: Amit Sahrawat <a.sahrawat@samsung.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201029032320.1448441-1-npiggin@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Remove the assumption that a compound page has HPAGE_PMD_NR pins from the
page cache.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: SeongJae Park <sjpark@amazon.de>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: "Huang, Ying" <ying.huang@intel.com>
Link: https://lkml.kernel.org/r/20200908195539.25896-12-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We have observed that drop_caches can take a considerable amount of
time (<put data here>). Especially when there are many memcgs involved
because they are adding an additional overhead.
It is quite unfortunate that the operation cannot be interrupted by a
signal currently. Add a check for fatal signals into the main loop so
that userspace can control early bailout.
There are two reasons:
1. We have too many memcgs, even though one object freed in one memcg,
the sum of object is bigger than 10.
2. We spend a lot of time in traverse memcg once. So, the memcg who
traversed at the first have been freed many objects. Traverse memcg
next time, the freed count bigger than 10 again.
We can get the following info through 'ps':
root:~# ps -aux | grep drop
root 357956 ... R Aug25 21119854:55 echo 3 > /proc/sys/vm/drop_caches
root 1771385 ... R Aug16 21146421:17 echo 3 > /proc/sys/vm/drop_caches
root 1986319 ... R 18:56 117:27 echo 3 > /proc/sys/vm/drop_caches
root 2002148 ... R Aug24 5720:39 echo 3 > /proc/sys/vm/drop_caches
root 2564666 ... R 18:59 113:58 echo 3 > /proc/sys/vm/drop_caches
root 2639347 ... R Sep03 2383:39 echo 3 > /proc/sys/vm/drop_caches
root 3904747 ... R 03:35 993:31 echo 3 > /proc/sys/vm/drop_caches
root 4016780 ... R Aug21 7882:18 echo 3 > /proc/sys/vm/drop_caches
Use bpftrace follow 'freed' value in drop_slab_node:
root:~# bpftrace -e 'kprobe:drop_slab_node+70 {@ret=hist(reg("bp")); }'
Attaching 1 probe...
^B^C
@ret:
[64, 128) 1 | |
[128, 256) 28 | |
[256, 512) 107 |@ |
[512, 1K) 298 |@@@ |
[1K, 2K) 613 |@@@@@@@ |
[2K, 4K) 4435 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@|
[4K, 8K) 442 |@@@@@ |
[8K, 16K) 299 |@@@ |
[16K, 32K) 100 |@ |
[32K, 64K) 139 |@ |
[64K, 128K) 56 | |
[128K, 256K) 26 | |
[256K, 512K) 2 | |
In the while loop, we can check whether the TASK_KILLABLE signal is set,
if so, we should break the loop.
Signed-off-by: Chunxin Zang <zangchunxin@bytedance.com>
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Chris Down <chris@chrisdown.name>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Link: https://lkml.kernel.org/r/20200909152047.27905-1-zangchunxin@bytedance.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
check_move_unevictable_pages() is used in making unevictable shmem pages
evictable: by shmem_unlock_mapping(), drm_gem_check_release_pagevec() and
i915/gem check_release_pagevec(). Those may pass down subpages of a huge
page, when /sys/kernel/mm/transparent_hugepage/shmem_enabled is "force".
That does not crash or warn at present, but the accounting of vmstats
unevictable_pgs_scanned and unevictable_pgs_rescued is inconsistent:
scanned being incremented on each subpage, rescued only on the head (since
tails already appear evictable once the head has been updated).
5.8 commit 5d91f31faf ("mm: swap: fix vmstats for huge page") has
established that vm_events in general (and unevictable_pgs_rescued in
particular) should count every subpage: so follow that precedent here.
Do this in such a way that if mem_cgroup_page_lruvec() is made stricter
(to check page->mem_cgroup is always set), no problem: skip the tails
before calling it, and add thp_nr_pages() to vmstats on the head.
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Yang Shi <shy828301@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Qian Cai <cai@lca.pw>
Link: http://lkml.kernel.org/r/alpine.LSU.2.11.2008301405000.5954@eggly.anvils
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We've met softlockup with "CONFIG_PREEMPT_NONE=y", when the target memcg
doesn't have any reclaimable memory.
It can be easily reproduced as below:
watchdog: BUG: soft lockup - CPU#0 stuck for 111s![memcg_test:2204]
CPU: 0 PID: 2204 Comm: memcg_test Not tainted 5.9.0-rc2+ #12
Call Trace:
shrink_lruvec+0x49f/0x640
shrink_node+0x2a6/0x6f0
do_try_to_free_pages+0xe9/0x3e0
try_to_free_mem_cgroup_pages+0xef/0x1f0
try_charge+0x2c1/0x750
mem_cgroup_charge+0xd7/0x240
__add_to_page_cache_locked+0x2fd/0x370
add_to_page_cache_lru+0x4a/0xc0
pagecache_get_page+0x10b/0x2f0
filemap_fault+0x661/0xad0
ext4_filemap_fault+0x2c/0x40
__do_fault+0x4d/0xf9
handle_mm_fault+0x1080/0x1790
It only happens on our 1-vcpu instances, because there's no chance for
oom reaper to run to reclaim the to-be-killed process.
Add a cond_resched() at the upper shrink_node_memcgs() to solve this
issue, this will mean that we will get a scheduling point for each memcg
in the reclaimed hierarchy without any dependency on the reclaimable
memory in that memcg thus making it more predictable.
Suggested-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Xunlei Pang <xlpang@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Chris Down <chris@chrisdown.name>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Link: http://lkml.kernel.org/r/1598495549-67324-1-git-send-email-xlpang@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The thp prefix is more frequently used than hpage and we should be
consistent between the various functions.
[akpm@linux-foundation.org: fix mm/migrate.c]
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Link: http://lkml.kernel.org/r/20200629151959.15779-6-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Drop the repeated word "marked".
Change "time time" to "same time".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Link: http://lkml.kernel.org/r/20200801173822.14973-14-rdunlap@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Now that workingset detection is implemented for anonymous LRU, we don't
need large inactive list to allow detecting frequently accessed pages
before they are reclaimed, anymore. This effectively reverts the
temporary measure put in by commit "mm/vmscan: make active/inactive ratio
as 1:1 for anon lru".
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/1595490560-15117-7-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch implements workingset detection for anonymous LRU. All the
infrastructure is implemented by the previous patches so this patch just
activates the workingset detection by installing/retrieving the shadow
entry and adding refault calculation.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/1595490560-15117-6-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Workingset detection for anonymous page will be implemented in the
following patch and it requires to store the shadow entries into the
swapcache. This patch implements an infrastructure to store the shadow
entry in the swapcache.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Link: http://lkml.kernel.org/r/1595490560-15117-5-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
To prepare the workingset detection for anon LRU, this patch splits
workingset event counters for refault, activate and restore into anon and
file variants, as well as the refaults counter in struct lruvec.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/1595490560-15117-4-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Greg Kroah-Hartman