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Vitaly Wool f56b131723 rust: rbtree: add immutable cursor 
Sometimes we may need to iterate over, or find an element in a read
only (or read mostly) red-black tree, and in that case we don't need a
mutable reference to the tree, which we'll however have to take to be
able to use the current (mutable) cursor implementation.

This patch adds a simple immutable cursor implementation to RBTree,
which enables us to use an immutable tree reference. The existing
(fully featured) cursor implementation is renamed to CursorMut,
while retaining its functionality.

The only existing user of the [mutable] cursor for RBTrees (binder) is
updated to match the changes.

Signed-off-by: Vitaly Wool <vitaly.wool@konsulko.se>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251014123339.2492210-1-vitaly.wool@konsulko.se
[ Applied `rustfmt`. Added intra-doc link. Fixed unclosed example.
  Fixed docs description. Fixed typo and other formatting nits.
    - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
 		2025-11-16 21:56:57 +01:00
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accel accel/qaic: Synchronize access to DBC request queue head & tail pointer 2025-10-14 08:56:31 -06:00
accessibility
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acpi More ACPI support updates for 6.18-rc1 2025-10-07 09:45:07 -07:00
amba
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android rust: rbtree: add immutable cursor 2025-11-16 21:56:57 +01:00
ata ata: libata-core: relax checks in ata_read_log_directory() 2025-10-13 09:12:36 +02:00
atm
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auxdisplay
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base More power management updates for 6.18-rc1 2025-10-07 09:39:51 -07:00
bcma
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block rnull: use `kernel::fmt` 2025-10-20 04:04:23 +02:00
bluetooth Bluetooth: bcsp: receive data only if registered 2025-09-27 11:37:02 -04:00
bus Char/Misc/IIO/Binder changes for 6.18-rc1 2025-10-04 16:26:32 -07:00
cache
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cdrom
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cdx Char/Misc/IIO/Binder changes for 6.18-rc1 2025-10-04 16:26:32 -07:00
char tpm_crb: Add idle support for the Arm FF-A start method 2025-10-18 14:33:22 +03:00
clk There's a bunch of patches here across drivers/clk/ to migrate drivers to use 2025-10-07 09:28:37 -07:00
clocksource hyperv-next for v6.18 2025-10-07 08:40:15 -07:00
comedi
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connector
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counter
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cpufreq CPUFreq fixes for 6.18 2025-10-01 13:59:28 +02:00
cpuidle cpuidle: Fail cpuidle device registration if there is one already 2025-09-20 13:08:54 +02:00
crypto This push contains the following changes: 2025-10-08 09:38:31 -07:00
cxl cxl/trace: Subtract to find an hpa_alias0 in cxl_poison events 2025-10-14 14:48:14 -07:00
dax
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dca
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devfreq PM / devfreq: rockchip-dfi: switch to FIELD_PREP_WM16 macro 2025-10-15 10:39:54 -04:00
dibs dibs: Check correct variable in dibs_init() 2025-09-26 15:10:59 -07:00
dio
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dma dmaengine updates for v6.18 2025-10-06 10:37:06 -07:00
dma-buf
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dpll dpll: zl3073x: Handle missing or corrupted flash configuration 2025-10-13 17:24:36 -07:00
edac - Add support for new AMD family 0x1a models to amd64_edac 2025-09-30 11:41:03 -07:00
eisa
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extcon
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firewire firewire updates for v6.18 2025-10-01 12:52:43 -07:00
firmware EFI updates for v6.18 2025-10-05 12:08:14 -07:00
fpga
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fsi
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fwctl pds_fwctl: Replace kzalloc + copy_from_user with memdup_user in pdsfc_fw_rpc 2025-09-22 10:33:10 -03:00
gnss
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gpio gpio: wcd934x: mark the GPIO controller as sleeping 2025-10-10 09:37:19 +02:00
gpu Driver Changes: 2025-10-17 09:39:53 +10:00
greybus
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hid hid-for-linus-2025101701 2025-10-18 08:18:18 -10:00
hsi
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hte
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hv Drivers: hv: Make CONFIG_HYPERV bool 2025-10-01 00:00:45 +00:00
hwmon gpio updates for v6.18-rc1 2025-10-01 11:34:12 -07:00
hwspinlock
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hwtracing Char/Misc/IIO/Binder changes for 6.18-rc1 2025-10-04 16:26:32 -07:00
i2c i2c: usbio: Add ACPI device-id for MTL-CVF devices 2025-10-14 13:54:43 +02:00
i3c i3c: fix big-endian FIFO transfers 2025-09-29 00:17:22 +02:00
idle
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iio IIO: New device support, features and cleanup for 6.18 2025-09-23 14:15:25 +02:00
infiniband RDMA v6.18 merge window pull request 2025-10-03 18:35:22 -07:00
input Input updates for v6.18-rc0 2025-10-08 09:44:38 -07:00
interconnect
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iommu iommufd 6.18 merge window pull 2025-10-03 18:18:48 -07:00
ipack
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irqchip irqchip/sifive-plic: Avoid interrupt ID 0 handling during suspend/resume 2025-10-07 10:23:22 +02:00
isdn
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leds
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macintosh
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mailbox qcom: add Glymur CPUCP mailbox binding 2025-10-08 11:44:21 -07:00
mcb
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md dm docs: fix typos 2025-10-03 18:48:02 -07:00
media USB/Thunderbolt changes for 6.18-rc1 2025-10-04 16:07:08 -07:00
memory
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memstick Summary of significant series in this pull request: 2025-10-02 18:18:33 -07:00
message
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mfd mfd: ls2kbmc: check for devm_mfd_add_devices() failure 2025-10-03 10:38:23 -05:00
misc powerpc, ocxl: Fix extraction of struct xive_irq_data 2025-10-13 09:40:55 +05:30
mmc rpmb: move rpmb_frame struct and constants to common header 2025-10-13 13:18:03 +02:00
most
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mtd MTD core: 2025-10-04 15:50:37 -07:00
mux
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net net: usb: lan78xx: fix use of improperly initialized dev->chipid in lan78xx_reset 2025-10-15 18:27:48 -07:00
nfc
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ntb NTB: epf: Add Renesas rcar support 2025-09-22 09:35:21 -04:00
nubus
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nvdimm libnvdimm for 6.18 2025-10-06 11:17:18 -07:00
nvme nvme/tcp: handle tls partially sent records in write_space() 2025-10-16 11:32:04 -07:00
nvmem Char/Misc fixes for 6.18-rc1 2025-10-07 12:13:26 -07:00
of Devicetree fixes for v6.18: 2025-10-10 13:05:40 -07:00
opp
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parisc
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parport
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pci PCI/VGA: Select SCREEN_INFO on X86 2025-10-17 08:31:14 -05:00
pcmcia
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peci
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perf arm64 fixes for -rc1 2025-10-07 08:59:25 -07:00
phy phy-for-6.18 2025-10-06 10:34:22 -07:00
pinctrl pci-v6.18-changes 2025-10-06 10:41:03 -07:00
platform platform-drivers-x86 for v6.18-1 2025-10-04 15:28:18 -07:00
pmdomain soc: driver updates for 6.18 2025-10-01 17:32:51 -07:00
pnp
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power power supply and reset changes for the 6.18 series 2025-10-01 13:02:59 -07:00
powercap
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pps
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ps3
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ptp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-10-01 10:14:49 +02:00
pwm gpio updates for v6.18-rc1 2025-10-01 11:34:12 -07:00
rapidio
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ras
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regulator MFD for v6.18 2025-10-01 12:04:12 -07:00
remoteproc remoteproc updates for v6.18 2025-10-04 15:45:17 -07:00
reset soc: driver updates for 6.18 2025-10-01 17:32:51 -07:00
rpmsg rpmsg: qcom_smd: Fix fallback to qcom,ipc parse 2025-09-20 21:29:48 -05:00
rtc RTC for 6.18 2025-10-11 11:56:47 -07:00
s390 more s390 updates for 6.18 merge window 2025-10-09 10:51:43 -07:00
sbus
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scsi SCSI misc on 20251011 2025-10-11 11:49:00 -07:00
sh
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siox
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slimbus
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soc - switch longson32 platform to DT and use MIPS_GENERIC framework 2025-10-05 10:09:55 -07:00
soundwire soundwire updates for 6.18 2025-10-06 10:32:22 -07:00
spi soc: driver updates for 6.18 2025-10-01 17:32:51 -07:00
spmi
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ssb
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staging Staging driver fixes for 6.18-rc1 2025-10-07 11:41:06 -07:00
target SCSI misc on 20251011 2025-10-11 11:49:00 -07:00
tc
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tee soc: driver updates for 6.18 2025-10-01 17:32:51 -07:00
thermal thermal: renesas: Fix RZ/G3E fall-out 2025-10-02 10:41:58 +02:00
thunderbolt thunderbolt: Fix use-after-free in tb_dp_dprx_work 2025-09-23 17:16:38 +02:00
tty TTY driver fix for 6.18-rc1 2025-10-07 11:36:01 -07:00
ufs SCSI misc on 20251011 2025-10-11 11:49:00 -07:00
uio hyperv-next for v6.18 2025-10-07 08:40:15 -07:00
usb USB/Thunderbolt changes for 6.18-rc1 2025-10-04 16:07:08 -07:00
vdpa vduse: Use fixed 4KB bounce pages for non-4KB page size 2025-10-01 07:24:55 -04:00
vfio vfio: Dump migration features under debugfs 2025-10-06 11:22:48 -06:00
vhost vdpa: support virtio_map 2025-10-01 07:24:43 -04:00
video fbdev fixes & enhancements for 6.18-rc1: 2025-10-10 09:36:23 -07:00
virt arm64 updates for 6.18 2025-09-29 18:48:39 -07:00
virtio virtio,vhost: fixes, cleanups 2025-10-04 08:48:16 -07:00
w1
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watchdog linux-watchdog 6.18-rc1 tag 2025-10-06 11:00:30 -07:00
xen dma-mapping updates for Linux 6.18: 2025-10-03 17:41:12 -07:00
zorro
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Kconfig
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Makefile hyperv-next for v6.18 2025-10-07 08:40:15 -07:00