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linux-next/drivers
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Brian Geffon 30226b69f8 zram: add a huge_idle writeback mode 
Today it's only possible to write back as a page, idle, or huge.  A user
might want to writeback pages which are huge and idle first as these idle
pages do not require decompression and make a good first pass for
writeback.

Idle writeback specifically has the advantage that a refault is unlikely
given that the page has been swapped for some amount of time without being
refaulted.

Huge writeback has the advantage that you're guaranteed to get the maximum
benefit from a single page writeback, that is, you're reclaiming one full
page of memory.  Pages which are compressed in zram being written back
result in some benefit which is always less than a page size because of
the fact that it was compressed.

The primary use of this is for minimizing refaults in situations where the
device has to be sensitive to storage endurance.  On ChromeOS we have
devices with slow eMMC and repeated writes and refaults can negatively
affect performance and endurance.

Link: https://lkml.kernel.org/r/20220322215821.1196994-1-bgeffon@google.com
Signed-off-by: Brian Geffon <bgeffon@google.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-04-29 14:36:59 -07:00
..
accessibility
acpi Revert "ACPI: processor: idle: fix lockup regression on 32-bit ThinkPad T40" 2022-04-21 19:58:14 +02:00
amba
android
ata ata: pata_marvell: Check the 'bmdma_addr' beforing reading 2022-04-22 08:45:06 +09:00
atm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-03-17 13:56:58 -07:00
auxdisplay auxdisplay: lcd2s: Use array size explicitly in lcd2s_gotoxy() 2022-03-18 20:31:14 +01:00
base drivers/base/memory: fix an unlikely reference counting issue in __add_memory_block() 2022-04-28 23:16:19 -07:00
bcma Core MTD changes: 2022-03-25 13:35:34 -07:00
block zram: add a huge_idle writeback mode 2022-04-29 14:36:59 -07:00
bluetooth Bluetooth: ath3k: remove superfluous header files 2022-03-18 17:12:09 +01:00
bus Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00
cdrom cdrom: remove unused variable 2022-04-06 08:47:52 -06:00
char random: use memmove instead of memcpy for remaining 32 bytes 2022-04-16 12:53:31 +02:00
clk A single revert to fix a boot regression seen when clk_put() started 2022-04-03 12:21:14 -07:00
clocksource asm-generic updates for 5.18 2022-03-23 18:03:08 -07:00
comedi
connector
counter Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00
cpufreq cpufreq: qcom-cpufreq-hw: Clear dcvs interrupts 2022-04-26 12:08:31 +05:30
cpuidle cpuidle: riscv: support non-SMP config 2022-04-19 17:42:08 -07:00
crypto virtio: features, fixes 2022-03-31 13:57:15 -07:00
cxl cxl/pci: Drop shadowed variable 2022-04-08 12:59:43 -07:00
dax dax for 5.18 2022-03-24 18:12:09 -07:00
dca
devfreq
dio
dma dmaengine: idxd: skip clearing device context when device is read-only 2022-04-20 17:24:43 +05:30
dma-buf dma-buf: handle empty dma_fence_arrays gracefully 2022-03-29 09:14:30 +02:00
edac EDAC/synopsys: Read the error count from the correct register 2022-04-14 14:44:49 +02:00
eisa
extcon
firewire
firmware sound fixes for 5.18-rc4 2022-04-22 13:11:38 -07:00
fpga
fsi
gnss
gpio gpio: Request interrupts after IRQ is initialized 2022-04-22 13:59:19 -07:00
gpu Merge tag 'amd-drm-fixes-5.18-2022-04-27' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes 2022-04-29 10:27:05 +10:00
greybus
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2022-04-01 10:14:32 -07:00
hsi
hv hyperv-fixes for 5.18-rc2 2022-04-07 06:35:34 -10:00
hwmon Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00
hwspinlock hwspinlock: sprd: Use struct_size() helper in devm_kzalloc() 2022-03-11 14:56:57 -06:00
hwtracing Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00
i2c i2c: ismt: Fix undefined behavior due to shift overflowing the constant 2022-04-15 23:49:02 +02:00
i3c i3c: fix uninitialized variable use in i2c setup 2022-03-08 22:33:52 +01:00
idle intel_idle: Fix SPR C6 optimization 2022-04-27 20:36:47 +02:00
iio Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00
infiniband RDMA/hfi1: Fix use-after-free bug for mm struct 2022-04-08 15:40:06 -03:00
input Input updates for v5.18-rc3 2022-04-23 09:52:07 -07:00
interconnect
iommu iommu/omap: Fix regression in probe for NULL pointer dereference 2022-04-08 11:16:29 +02:00
ipack
irqchip irqchip/gic, gic-v3: Prevent GSI to SGI translations 2022-04-05 16:33:47 +01:00
isdn mISDN: fix typo "frame to short" -> "frame too short" 2022-03-21 13:26:38 +00:00
leds LED updates for 5.18-rc1. Nothing major here, there are two drivers 2022-03-27 14:09:48 -07:00
macintosh
mailbox mailbox: ti-msgmgr: Operate mailbox in polled mode during system suspend 2022-03-12 19:33:30 -06:00
mcb
md block-5.18-2022-04-22 2022-04-23 09:46:44 -07:00
media media: si2157: unknown chip version Si2147-A30 ROM 0x50 2022-04-09 17:45:49 +02:00
memory memory: fsl_ifc: populate child nodes of buses and mfd devices 2022-04-06 09:39:16 +02:00
memstick
message scsi: message: fusion: Remove redundant variable dmp 2022-04-06 22:28:07 -04:00
mfd - New Drivers 2022-03-25 13:56:18 -07:00
misc habanalabs: Fix test build failures 2022-04-04 17:03:04 +02:00
mmc mmc: core: improve API to make clear mmc_hw_reset is for cards 2022-04-08 11:00:08 +02:00
most
mtd mtd: rawnand: qcom: fix memory corruption that causes panic 2022-04-21 09:29:07 +02:00
mux
net Revert "ibmvnic: Add ethtool private flag for driver-defined queue limits" 2022-04-28 09:46:18 -07:00
nfc spi: Updates for v5.18 2022-03-21 18:33:57 -07:00
ntb
nubus
nvdimm libnvdimm for 5.18 2022-03-30 10:04:11 -07:00
nvme nvme-pci: disable namespace identifiers for Qemu controllers 2022-04-15 06:56:17 +02:00
nvmem nvmem: brcm_nvram: parse NVRAM content into NVMEM cells 2022-03-18 14:08:36 +01:00
of Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00
opp
parisc parisc: Fix CPU affinity for Lasi, WAX and Dino chips 2022-03-29 21:37:12 +02:00
parport parport_pc: Also enable driver for PCI systems 2022-03-18 14:01:41 +01:00
pci hyperv-fixes for 5.18-rc2 2022-04-07 06:35:34 -10:00
pcmcia
peci
perf arm_pmu: Validate single/group leader events 2022-04-13 11:48:45 +01:00
phy phy: PHY_FSL_LYNX_28G should depend on ARCH_LAYERSCAPE 2022-03-29 08:45:16 -07:00
pinctrl pinctrl: pistachio: fix use of irq_of_parse_and_map() 2022-04-24 16:24:09 +02:00
platform platform/x86/intel: pmc/core: change pmc_lpm_modes to static 2022-04-27 16:55:54 +02:00
pnp PNP update for 5.18-rc1 2022-03-21 14:46:01 -07:00
power power: supply: Reset err after not finding static battery 2022-04-13 12:05:22 +02:00
powercap
pps pps: generators: pps_gen_parport: Switch to use module_parport_driver() 2022-03-18 14:01:19 +01:00
ps3
ptp ptp: ocp: handle error from nvmem_device_find 2022-03-30 12:08:11 -07:00
pwm
rapidio
ras
regulator regulator: atc260x: Fix missing active_discharge_on setting 2022-04-04 08:59:43 +01:00
remoteproc remoteproc updates for v5.18 2022-03-30 10:50:48 -07:00
reset reset: tegra-bpmp: Restore Handle errors in BPMP response 2022-04-04 11:14:13 +02:00
rpmsg rpmsg: ctrl: Introduce new RPMSG_CREATE/RELEASE_DEV_IOCTL controls 2022-03-13 11:49:53 -05:00
rtc RTC for 5.18 2022-04-01 09:37:18 -07:00
s390 s390: cleanup timer API use 2022-03-27 22:18:39 +02:00
sbus
scsi scsi: sr: Do not leak information in ioctl 2022-04-18 22:48:31 -04:00
sh
siox
slimbus
soc Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
soundwire Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00
spi spi: Fixes for v5.18 2022-04-19 10:30:43 -07:00
spmi
ssb
staging staging: r8188eu: Fix PPPoE tag insertion on little endian systems 2022-04-04 16:35:20 +02:00
target Merge branch '5.18/scsi-queue' into 5.18/scsi-fixes 2022-04-06 21:46:54 -04:00
tc
tee ARM driver updates for 5.18 2022-03-23 18:23:13 -07:00
thermal Merge branch 'thermal-int340x' 2022-04-28 16:51:24 +02:00
thunderbolt Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00
tty tty: serial: mpc52xx_uart: make rx/tx hooks return unsigned, part II. 2022-04-04 10:33:02 +02:00
uio
usb xen: branch for v5.18-rc1 2022-03-28 14:32:39 -07:00
vdpa virtio: fixes, cleanups 2022-04-05 10:40:52 -07:00
vfio vfio/pci: Fix vf_token mechanism when device-specific VF drivers are used 2022-04-13 11:37:44 -06:00
vhost virtio: features, fixes 2022-03-31 13:57:15 -07:00
video fbdev fixes and updates for kernel v5.18-rc5 2022-04-26 11:32:01 -07:00
virt Random number generator fixes for Linux 5.18-rc1. 2022-03-31 14:51:34 -07:00
virtio virtio: fixes, cleanups 2022-04-05 10:40:52 -07:00
visorbus
vlynq
vme
w1 w1: w1_therm: Add support for Maxim MAX31850 thermoelement IF. 2022-03-18 14:07:09 +01:00
watchdog linux-watchdog 5.18-rc1 tag 2022-03-31 14:14:03 -07:00
xen xen: Convert kmap() to kmap_local_page() 2022-04-20 15:22:18 -05:00
zorro
Kconfig
Makefile