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Pavel Begunkov 5a978dcfc0 io_uring: always go for cancellation spin on exec Always try to do cancellation in __io_uring_task_cancel() at least once, so it actually goes and cleans its sqpoll tasks (i.e. via io_sqpoll_cancel_sync()), otherwise sqpoll task may submit new requests after cancellation and it's racy for many reasons. Fixes: `521d6a737a` ("io_uring: cancel sqpoll via task_work") Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/0a21bd6d794bb1629bc906dd57a57b2c2985a8ac.1616839147.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>		2021-03-28 18:11:53 -06:00
arch	* Doc fixes	2021-03-04 11:26:17 -08:00
block	block/bfq: update comments and default value in docs for fifo_expire	2021-03-02 11:25:38 -07:00
certs	certs: Replace K{U,G}IDT_INIT() with GLOBAL_ROOT_{U,G}ID	2021-01-21 16:16:10 +00:00
crypto	Keyrings miscellany	2021-02-23 16:09:23 -08:00
Documentation	block-5.12-2021-03-05	2021-03-05 12:59:37 -08:00
drivers	RDMA 5.12 first rc pull request	2021-03-05 17:27:59 -08:00
fs	io_uring: always go for cancellation spin on exec	2021-03-28 18:11:53 -06:00
include	io_uring: remove structures from include/linux/io_uring.h	2021-03-18 09:44:35 -06:00
init	kbuild: fix UNUSED_KSYMS_WHITELIST for Clang LTO	2021-02-28 15:19:21 +09:00
ipc	fs: make helpers idmap mount aware	2021-01-24 14:27:20 +01:00
kernel	Revert "signal: don't allow STOP on PF_IO_WORKER threads"	2021-03-27 14:09:11 -06:00
lib	Merge branch 'kmap-conversion-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux	2021-03-01 11:24:18 -08:00
LICENSES	LICENSES: Add the CC-BY-4.0 license	2020-12-08 10:33:27 -07:00
mm	swap: fix swapfile read/write offset	2021-03-02 17:25:46 -07:00
net	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
samples	treewide: Miguel has moved	2021-02-26 09:41:03 -08:00
scripts	gcc-plugins fixes for v5.12-rc2	2021-03-05 17:23:03 -08:00
security	Keyrings miscellany	2021-02-23 16:09:23 -08:00
sound	ALSA: hda/realtek: Apply dual codec quirks for MSI Godlike X570 board	2021-03-03 15:25:03 +01:00
tools	* Doc fixes	2021-03-04 11:26:17 -08:00
usr	Kbuild updates for v5.12	2021-02-25 10:17:31 -08:00
virt	KVM: x86/mmu: Consider the hva in mmu_notifier retry	2021-02-22 13:16:53 -05:00
.clang-format	cxl for 5.12	2021-02-24 09:38:36 -08:00
.cocciconfig
.get_maintainer.ignore	Opt out of scripts/get_maintainer.pl	2019-05-16 10:53:40 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	clang-lto series for v5.12-rc1	2021-02-23 09:28:51 -08:00
.mailmap	treewide: Miguel has moved	2021-02-26 09:41:03 -08:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	treewide: Miguel has moved	2021-02-26 09:41:03 -08:00
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	RISC-V Patches for the 5.12 Merge Window	2021-02-26 10:28:35 -08:00
Makefile	Linux 5.12-rc2	2021-03-05 17:33:41 -08:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

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 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.