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Pankaj Raghav 786bb02458 brd: use XArray instead of radix-tree to index backing pages 
XArray was introduced to hold large array of pointers with a simple API.
XArray API also provides array semantics which simplifies the way we store
and access the backing pages, and the code becomes significantly easier
to understand.

No performance difference was noticed between the two implementation
using fio with direct=1 [1].

[1] Performance in KIOPS:

          |  radix-tree |    XArray  |   Diff
          |             |            |
write     |    315      |     313    |   -0.6%
randwrite |    286      |     290    |   +1.3%
read      |    330      |     335    |   +1.5%
randread  |    309      |     312    |   +0.9%

Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20230511121544.111648-1-p.raghav@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-05-16 09:03:23 -06:00
..
accel
Driver core changes for 6.4-rc1
2023-04-27 11:53:57 -07:00
accessibility
braille_console: remove MODULE_LICENSE in non-modules
2023-04-13 13:13:53 -07:00
acpi
ACPI: video: Remove acpi_backlight=video quirk for Lenovo ThinkPad W530
2023-05-04 20:23:41 +02:00
amba
ARM: tegra: remove MODULE_LICENSE in non-modules
2023-04-13 13:13:50 -07:00
android
…
ata
Driver core changes for 6.4-rc1
2023-04-27 11:53:57 -07:00
atm
…
auxdisplay
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base
- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of
2023-04-27 19:42:02 -07:00
bcma
bcma: Add explicit of_device.h include
2023-04-14 15:32:56 +03:00
block
brd: use XArray instead of radix-tree to index backing pages
2023-05-16 09:03:23 -06:00
bluetooth
Bluetooth: btusb: Add WCN6855 devcoredump support
2023-04-23 22:07:27 -07:00
bus
modules-6.4-rc1
2023-04-27 16:36:55 -07:00
cdrom
…
cdx
cdx: fix build failure due to sysfs 'bus_type' argument needing to be const
2023-04-27 16:21:32 -07:00
char
This PR fixes a critical bug in my first pull request. I fixed the
2023-05-01 10:37:37 -07:00
clk
A couple more patches that would be good to get into -rc1.
2023-05-07 10:31:45 -07:00
clocksource
Timekeeping and clocksource/event driver updates the second batch:
2023-04-29 10:24:30 -07:00
comedi
…
connector
…
counter
- New Drivers
2023-05-02 10:41:31 -07:00
cpufreq
Driver core changes for 6.4-rc1
2023-04-27 11:53:57 -07:00
cpuidle
RISC-V: Align SBI probe implementation with spec
2023-04-29 13:04:50 -07:00
crypto
This push fixes the following problems:
2023-05-07 10:57:14 -07:00
cxl
cxl: Add missing return to cdat read error path
2023-05-13 00:20:06 -07:00
dax
…
dca
Mainly singleton patches all over the place. Series of note are:
2023-04-27 19:57:00 -07:00
devfreq
Driver core changes for 6.4-rc1
2023-04-27 11:53:57 -07:00
dio
…
dma
dmaengine updates for v6.4
2023-05-03 11:11:56 -07:00
dma-buf
- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of
2023-04-27 19:42:02 -07:00
edac
Driver core changes for 6.4-rc1
2023-04-27 11:53:57 -07:00
eisa
…
extcon
…
firewire
firewire: net: fix unexpected release of object for asynchronous request packet
2023-05-11 09:06:49 +09:00
firmware
Merge tag 'drm-misc-fixes-2023-05-11' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
2023-05-12 05:32:36 +10:00
fpga
Char/Misc drivers for 6.4-rc1
2023-04-27 12:07:50 -07:00
fsi
…
gnss
…
gpio
hte: Changes for v6.4-rc1
2023-05-03 11:00:27 -07:00
gpu
Merge tag 'amd-drm-fixes-6.4-2023-05-11' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
2023-05-12 06:46:34 +10:00
greybus
…
hid
Driver core changes for 6.4-rc1
2023-04-27 11:53:57 -07:00
hsi
…
hte
Devicetree updates for v6.4, part 2:
2023-04-27 10:09:05 -07:00
hv
hyperv-next for v6.4
2023-04-27 17:17:12 -07:00
hwmon
hwmon: (k10temp) Add PCI ID for family 19, model 78h
2023-05-08 11:36:19 +02:00
hwspinlock
hwspinlock: remove MODULE_LICENSE in non-modules
2023-04-13 13:13:52 -07:00
hwtracing
coresight: Updates for v6.4
2023-04-19 15:08:11 +02:00
i2c
i2c: gxp: fix build failure without CONFIG_I2C_SLAVE
2023-05-03 17:27:29 +02:00
i3c
i3c: ast2600: set variable ast2600_i3c_ops storage-class-specifier to static
2023-04-30 23:50:26 +02:00
idle
intel_idle: mark few variables as __read_mostly
2023-04-27 19:37:36 +02:00
iio
Char/Misc drivers for 6.4-rc1
2023-04-27 12:07:50 -07:00
infiniband
v6.4 merge window RDMA pull request
2023-04-29 17:21:24 -07:00
input
Input updates for 6.4 merge window:
2023-05-01 17:18:56 -07:00
interconnect
modules-6.4-rc1
2023-04-27 16:36:55 -07:00
iommu
IOMMU Updates for Linux 6.4
2023-04-30 13:00:38 -07:00
ipack
…
irqchip
- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of
2023-04-27 19:42:02 -07:00
isdn
Including fixes from netfilter.
2023-05-05 19:12:01 -07:00
leds
- New Drivers
2023-05-02 10:36:02 -07:00
macintosh
powerpc updates for 6.4
2023-04-28 16:24:32 -07:00
mailbox
- mailbox api: allow direct registration to a channel
2023-05-07 10:17:33 -07:00
mcb
mcb-lpc: Reallocate memory region to avoid memory overlapping
2023-04-20 14:24:01 +02:00
md
for-6.4/block-2023-05-06
2023-05-06 08:28:58 -07:00
media
media: nxp: imx8-isi: fix buiding on 32-bit
2023-05-08 09:10:07 -07:00
memory
ARM: SoC drivers for v6.4
2023-04-25 12:02:16 -07:00
memstick
…
message
Objtool changes for v6.4:
2023-04-28 14:02:54 -07:00
mfd
- New Drivers
2023-05-02 10:41:31 -07:00
misc
Objtool changes for v6.4:
2023-04-28 14:02:54 -07:00
mmc
TTY/Serial changes for 6.4-rc1
2023-04-27 11:46:26 -07:00
most
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mtd
This pull request contains updates for UBI and UBIFS
2023-05-03 18:58:59 -07:00
mux
…
net
net: mscc: ocelot: fix stat counter register values
2023-05-10 12:11:18 +01:00
nfc
drivers: nfc: nfcsim: remove return value check of dev_dir
2023-04-24 18:12:42 -07:00
ntb
…
nubus
…
nvdimm
…
nvme
for-6.4/io_uring-2023-05-07
2023-05-07 10:00:09 -07:00
nvmem
modules-6.4-rc1
2023-04-27 16:36:55 -07:00
of
Devicetree fixes for 6.4, part 1:
2023-05-05 13:27:59 -07:00
opp
Devicetree updates for v6.4, part 2:
2023-04-27 10:09:05 -07:00
parisc
parisc: Replace regular spinlock with spin_trylock on panic path
2023-05-03 17:43:26 +02:00
parport
…
pci
cxl for v6.4
2023-04-30 11:51:51 -07:00
pcmcia
…
peci
…
perf
RISC-V: Align SBI probe implementation with spec
2023-04-29 13:04:50 -07:00
phy
phy fixes for 6.4
2023-05-05 11:57:29 -07:00
pinctrl
Pin control bulk changes for the v6.4 kernel:
2023-05-02 15:40:41 -07:00
platform
platform/mellanox: fix potential race in mlxbf-tmfifo driver
2023-05-09 11:54:35 +02:00
pnp
…
power
power supply and reset changes for the v6.4 series
2023-04-29 17:37:02 -07:00
powercap
…
pps
…
ps3
…
ptp
Driver core changes for 6.4-rc1
2023-04-27 11:53:57 -07:00
pwm
pwm: Changes for v6.4-rc1
2023-05-03 11:25:01 -07:00
rapidio
Mainly singleton patches all over the place. Series of note are:
2023-04-27 19:57:00 -07:00
ras
…
regulator
modules-6.4-rc1
2023-04-27 16:36:55 -07:00
remoteproc
Mainly singleton patches all over the place. Series of note are:
2023-04-27 19:57:00 -07:00
reset
Nothing looks out of the ordinary in this batch of clk driver updates. There
2023-04-29 17:29:39 -07:00
rpmsg
Driver core changes for 6.4-rc1
2023-04-27 11:53:57 -07:00
rtc
- New Drivers
2023-05-02 10:41:31 -07:00
s390
s390 updates for the 6.4 merge window
2023-04-30 11:43:31 -07:00
sbus
Driver core changes for 6.4-rc1
2023-04-27 11:53:57 -07:00
scsi
SCSI misc on 20230506
2023-05-06 08:37:28 -07:00
sh
…
siox
…
slimbus
…
soc
modules-6.4-rc1
2023-04-27 16:36:55 -07:00
soundwire
…
spi
Char/Misc drivers for 6.4-rc1
2023-04-27 12:07:50 -07:00
spmi
spmi: Add a check for remove callback when removing a SPMI driver
2023-04-20 14:16:39 +02:00
ssb
…
staging
modules-6.4-rc1
2023-04-27 16:36:55 -07:00
target
…
tc
…
tee
Driver core changes for 6.4-rc1
2023-04-27 11:53:57 -07:00
thermal
thermal: intel: powerclamp: Fix NULL pointer access issue
2023-05-04 20:30:18 +02:00
thunderbolt
thunderbolt: Changes for v6.4 merge window
2023-04-19 11:42:44 +02:00
tty
Char/Misc drivers for 6.4-rc1
2023-04-27 12:07:50 -07:00
ufs
scsi: ufs: core: Fix I/O hang that occurs when BKOPS fails in W-LUN suspend
2023-05-08 07:15:05 -04:00
uio
…
usb
Char/Misc drivers for 6.4-rc1
2023-04-27 12:07:50 -07:00
vdpa
virtio,vhost,vdpa: features, fixes, cleanups
2023-04-27 17:05:34 -07:00
vfio
VFIO updates for v6.4-rc1
2023-05-02 11:56:43 -07:00
vhost
Scheduler changes for v6.4:
2023-04-28 14:53:30 -07:00
video
fbdev: stifb: Fix info entry in sti_struct on error path
2023-05-12 11:50:33 +02:00
virt
Devicetree updates for v6.4, part 2:
2023-04-27 10:09:05 -07:00
virtio
- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of
2023-04-27 19:42:02 -07:00
vlynq
…
w1
Char/Misc drivers for 6.4-rc1
2023-04-27 12:07:50 -07:00
watchdog
linux-watchdog 6.4-rc1 tag
2023-05-04 18:33:56 -07:00
xen
xen: branch for v6.4-rc1
2023-04-27 17:27:06 -07:00
zorro
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Kconfig
…
Makefile
…