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Pavel Begunkov 208858d4b0 io_uring: always lock in io_apoll_task_func 
From: Dylan Yudaken <dylany@meta.com>

[ upstream commit c06c6c5d27 ]

This is required for the failure case (io_req_complete_failed) and is
missing.

The alternative would be to only lock in the failure path, however all of
the non-error paths in io_poll_check_events that do not do not return
IOU_POLL_NO_ACTION end up locking anyway. The only extraneous lock would
be for the multishot poll overflowing the CQE ring, however multishot poll
would probably benefit from being locked as it will allow completions to
be batched.

So it seems reasonable to lock always.

Signed-off-by: Dylan Yudaken <dylany@meta.com>
Link: https://lore.kernel.org/r/20221124093559.3780686-3-dylany@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-09-19 12:20:23 +02:00
arch s390/ipl: add missing secure/has_secure file to ipl type 'unknown' 2023-09-19 12:20:22 +02:00
block block/partition: fix signedness issue for Amiga partitions 2023-07-27 08:44:18 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto X.509: if signature is unsupported skip validation 2023-09-19 12:20:22 +02:00
Documentation scsi: core: Fix the scsi_set_resid() documentation 2023-09-19 12:20:21 +02:00
drivers md/md-bitmap: remove unnecessary local variable in backlog_store() 2023-09-19 12:20:23 +02:00
fs udf: initialize newblock to 0 2023-09-19 12:20:23 +02:00
include usb: typec: bus: verify partner exists in typec_altmode_attention 2023-09-19 12:20:23 +02:00
init x86/mm: Initialize text poking earlier 2023-08-08 19:57:39 +02:00
io_uring io_uring: always lock in io_apoll_task_func 2023-09-19 12:20:23 +02:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel tracing: Zero the pipe cpumask on alloc to avoid spurious -EBUSY 2023-09-19 12:20:23 +02:00
lib radix tree: remove unused variable 2023-08-30 16:23:16 +02:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm tmpfs: verify {g,u}id mount options correctly 2023-09-19 12:20:06 +02:00
net net/ipv6: SKB symmetric hash should incorporate transport ports 2023-09-19 12:20:23 +02:00
samples samples/bpf: fix broken map lookup probe 2023-09-19 12:20:09 +02:00
scripts modpost: fix off by one in is_executable_section() 2023-07-27 08:44:00 +02:00
security smackfs: Prevent underflow in smk_set_cipso() 2023-09-19 12:20:13 +02:00
sound ALSA: pcm: Fix missing fixup call in compat hw_refine ioctl 2023-09-19 12:20:21 +02:00
tools selftests/bpf: Clean up fmod_ret in bench_rename test script 2023-09-19 12:20:09 +02:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt KVM: fix memoryleak in kvm_init() 2023-04-05 11:23:43 +02:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
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 Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
Makefile Linux 5.10.194 2023-09-02 09:18:14 +02:00
README

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.