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Guenter Roeck e2ba58ccc9 block: Fix default IO priority if there is no IO context 
Upstream commit 53889bcaf5 ("block: make __get_task_ioprio() easier to
read") changes the IO priority returned to the caller if no IO context
is defined for the task. Prior to this commit, the returned IO priority
was determined by task_nice_ioclass() and task_nice_ioprio(). Now it is
always IOPRIO_DEFAULT, which translates to IOPRIO_CLASS_NONE with priority
0. However, task_nice_ioclass() returns IOPRIO_CLASS_IDLE, IOPRIO_CLASS_RT,
or IOPRIO_CLASS_BE depending on the task scheduling policy, and
task_nice_ioprio() returns a value determined by task_nice(). This causes
regressions in test code checking the IO priority and class of IO
operations on tasks with no IO context.

Fix the problem by returning the IO priority calculated from
task_nice_ioclass() and task_nice_ioprio() if no IO context is defined
to match earlier behavior.

Fixes: 53889bcaf5 ("block: make __get_task_ioprio() easier to read")
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20250731044953.1852690-1-linux@roeck-us.net
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 		2025-07-31 15:00:41 -06:00
Documentation platform-drivers-x86 for v6.17-1 2025-07-28 23:21:28 -07:00
LICENSES LICENSES: add CC0-1.0 license text 2025-05-21 14:54:17 +02:00
arch platform-drivers-x86 for v6.17-1 2025-07-28 23:21:28 -07:00
block block: fix potential deadlock while running nr_hw_queue update 2025-07-30 06:20:51 -06:00
certs
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crypto Crypto library updates for 6.17 2025-07-28 17:58:52 -07:00
drivers nvme: fix various comment typos 2025-07-31 06:35:58 -07:00
fs fscrypt updates for 6.17 2025-07-28 18:07:38 -07:00
include block: Fix default IO priority if there is no IO context 2025-07-31 15:00:41 -06:00
init for-6.17/io_uring-20250728 2025-07-28 16:30:12 -07:00
io_uring for-6.17/io_uring-20250728 2025-07-28 16:30:12 -07:00
ipc vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
kernel Power management updates for 6.17-rc1 2025-07-28 20:13:36 -07:00
lib Crypto library tests for 6.17 2025-07-28 18:02:58 -07:00
mm ACPI updates for 6.17-rc1 2025-07-28 20:44:42 -07:00
net Crypto library updates for 6.17 2025-07-28 17:58:52 -07:00
rust regulator: Updates for v6.17 2025-07-28 22:52:02 -07:00
samples Landlock update for v6.17-rc1 2025-07-28 19:21:32 -07:00
scripts Crypto library tests for 6.17 2025-07-28 18:02:58 -07:00
security Landlock update for v6.17-rc1 2025-07-28 19:21:32 -07:00
sound ASoC: Updates for v6.17 2025-07-24 14:47:49 +02:00
tools Power management updates for 6.17-rc1 2025-07-28 20:13:36 -07:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt KVM: Allow CPU to reschedule while setting per-page memory attributes 2025-06-24 12:20:17 -07:00
.clang-format Linux 6.15-rc5 2025-05-06 16:39:25 +10:00
.clippy.toml rust: clean Rust 1.88.0's warning about `clippy::disallowed_macros` configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
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.editorconfig
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.get_maintainer.ignore
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.gitattributes
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.gitignore .gitignore: ignore Python compiled bytecode 2025-04-24 10:12:46 -06:00
.mailmap 11 hotfixes. 9 are cc:stable and the remainder address post-6.15 issues 2025-07-24 19:13:30 -07:00
.pylintrc docs: add a .pylintrc file with sys path for docs scripts 2025-04-09 12:10:33 -06:00
.rustfmt.toml
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COPYING
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CREDITS mm: update MAINTAINERS entry for HMM 2025-07-19 19:26:16 -07:00
Kbuild
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Kconfig
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MAINTAINERS platform-drivers-x86 for v6.17-1 2025-07-28 23:21:28 -07:00
Makefile hardening updates for v6.17-rc1 2025-07-28 17:16:12 -07:00
README
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.