Christoph Hellwig 00c0b2825b block: don't allow enabling a cache on devices that don't support it ...

[ Upstream commit 43c9835b14 ]

Currently the write_cache attribute allows enabling the QUEUE_FLAG_WC
flag on devices that never claimed the capability.

Fix that by adding a QUEUE_FLAG_HW_WC flag that is set by
blk_queue_write_cache and guards re-enabling the cache through sysfs.

Note that any rescan that calls blk_queue_write_cache will still
re-enable the write cache as in the current code.

Fixes: 93e9d8e836 ("block: add ability to flag write back caching on a device")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230707094239.107968-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-09-13 09:42:40 +02:00

..

acpi

ACPI: sleep: Avoid breaking S3 wakeup due to might_sleep()

2023-06-28 11:12:22 +02:00

asm-generic

word-at-a-time: use the same return type for has_zero regardless of endianness

2023-08-11 12:08:11 +02:00

clocksource

clocksource/drivers/timer-ti-dm: Move struct omap_dm_timer fields to driver

2022-09-20 10:49:46 +02:00

crypto

crypto: api - Use work queue in crypto_destroy_instance

2023-09-13 09:42:32 +02:00

drm

drm/display/dp: Fix the DP DSC Receiver cap size

2023-08-30 16:11:09 +02:00

dt-bindings

dt-bindings: clocks: imx8mp: Add ID for usb suspend clock

2022-12-31 13:33:09 +01:00

keys

certs: Move load_certificate_list() to be with the asymmetric keys code

2022-06-21 16:05:06 +01:00

kunit

kunit: fix kunit_test_init_section_suites(...)

2023-02-09 11:28:08 +01:00

kvm

KVM: arm64: vgic-v4: Make the doorbell request robust w.r.t preemption

2023-08-23 17:52:28 +02:00

linux

block: don't allow enabling a cache on devices that don't support it

2023-09-13 09:42:40 +02:00

math-emu

powerpc/math-emu: Remove -w build flag and fix warnings

2022-09-05 17:28:25 +10:00

media

media: v4l2-mem2mem: add lock to protect parameter num_rdy

2023-08-23 17:52:23 +02:00

memory

memory: renesas-rpc-if: Split-off private data from struct rpcif

2023-03-11 13:55:17 +01:00

misc

…

net

mac80211: make ieee80211_tx_info padding explicit

2023-09-13 09:42:34 +02:00

pcmcia

…

ras

mm, hwpoison: enable memory error handling on 1GB hugepage

2022-08-08 18:06:44 -07:00

rdma

RDMA/cma: Always set static rate to 0 for RoCE

2023-06-21 16:00:59 +02:00

rv

Documentation/rv: Add deterministic automata monitor synthesis documentation

2022-07-30 14:01:29 -04:00

scsi

scsi: libsas: Add sas_ata_device_link_abort()

2023-05-11 23:03:20 +09:00

soc

net: mscc: ocelot: don't keep PTP configuration of all ports in single structure

2023-07-19 16:22:01 +02:00

sound

ASoC: Intel: avs: Account for UID of ACPI device

2023-06-21 16:00:53 +02:00

target

scsi: target: Fix multiple LUN_RESET handling

2023-05-11 23:03:19 +09:00

trace

jbd2: remove journal_clean_one_cp_list()

2023-08-30 16:10:58 +02:00

uapi

media: uapi: HEVC: Add num_delta_pocs_of_ref_rps_idx field

2023-09-13 09:42:20 +02:00

ufs

scsi: ufs: exynos: Fix DMA alignment for PAGE_SIZE != 4096

2023-03-10 09:33:15 +01:00

vdso

…

video

video: Provide constants for VGA I/O range

2022-07-19 13:19:11 +02:00

xen

ACPI: processor: Fix evaluating _PDC method when running as Xen dom0

2023-05-11 23:03:11 +09:00