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Ming Lei 3ab6e94ca5 ublk_drv: avoid to touch io_uring cmd in blk_mq io path
io_uring cmd is supposed to be used in ubq daemon context mainly,
and we should try to avoid to touch it in ublk io submission context,
otherwise this data could become shared between the two contexts,
and performance is hurt.

So link request into one per-queue list, and use same batching policy
of io_uring command, just avoid to touch ucmd in blk-mq io context.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: ZiyangZhang <ZiyangZhang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20221029010432.598367-4-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-10-31 07:23:24 -06:00
arch powerpc updates for 6.1 2022-10-09 14:05:15 -07:00
block blk-mq: Properly init requests from blk_mq_alloc_request_hctx() 2022-10-28 07:54:47 -06:00
certs certs: make system keyring depend on built-in x509 parser 2022-09-24 04:31:18 +09:00
crypto crypto: blake2b: effectively disable frame size warning 2022-08-10 17:59:11 -07:00
Documentation Documentation: document ublk user recovery feature 2022-10-18 05:12:26 -07:00
drivers ublk_drv: avoid to touch io_uring cmd in blk_mq io path 2022-10-31 07:23:24 -06:00
fs ucounts: Split rlimit and ucount values and max values 2022-10-09 16:24:05 -07:00
include blk-mq: don't add non-pt request with ->end_io to batch 2022-10-27 07:15:44 -06:00
init powerpc updates for 6.1 2022-10-09 14:05:15 -07:00
io_uring for-6.1/passthrough-2022-10-04 2022-10-07 09:35:50 -07:00
ipc ipc: mqueue: fix possible memory leak in init_mqueue_fs() 2022-10-09 16:10:22 -07:00
kernel blktrace: remove unnessary stop block trace in 'blk_trace_shutdown' 2022-10-20 06:02:52 -07:00
lib Driver core changes for 6.1-rc1 2022-10-07 17:04:10 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm The first batch of KVM patches, mostly covering x86, which I 2022-10-09 09:39:55 -07:00
net Driver core changes for 6.1-rc1 2022-10-07 17:04:10 -07:00
rust Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
samples ARM: driver updates for 6.1 2022-10-06 11:04:57 -07:00
scripts Networking changes for 6.1. 2022-10-04 13:38:03 -07:00
security powerpc updates for 6.1 2022-10-09 14:05:15 -07:00
sound sound updates for 6.1-rc1 2022-10-05 12:02:07 -07:00
tools powerpc updates for 6.1 2022-10-09 14:05:15 -07:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt KVM: remove KVM_REQ_UNHALT 2022-09-26 12:37:21 -04:00
.clang-format PCI/DOE: Add DOE mailbox support functions 2022-07-19 15:38:04 -07:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
.mailmap The first batch of KVM patches, mostly covering x86, which I 2022-10-09 09:39:55 -07:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS drm for 5.20/6.0 2022-08-03 19:52:08 -07:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS nvme: add Guenther as nvme-hwmon maintainer 2022-10-19 12:42:43 +02:00
Makefile hardening updates for v6.1-rc1 2022-10-03 17:24:22 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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 Restructured Text 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.