Stefan Hajnoczi 3edf660a91 aio-wait: avoid AioContext lock in aio_wait_bh_oneshot() ...

There is no need for the AioContext lock in aio_wait_bh_oneshot().
It's easy to remove the lock from existing callers and then switch from
AIO_WAIT_WHILE() to AIO_WAIT_WHILE_UNLOCKED() in aio_wait_bh_oneshot().

Document that the AioContext lock should not be held across
aio_wait_bh_oneshot(). Holding a lock across aio_poll() can cause
deadlock so we don't want callers to do that.

This is a step towards getting rid of the AioContext lock.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230404153307.458883-1-stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

2023-05-10 14:15:13 +02:00

..

aio-posix.c

aio: make aio_set_fd_poll() static to aio-posix.c

2023-03-13 15:23:37 +04:00

aio-posix.h

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aio-wait.c

aio-wait: avoid AioContext lock in aio_wait_bh_oneshot()

2023-05-10 14:15:13 +02:00

aio-win32.c

win32: avoid mixing SOCKET and file descriptor space

2023-03-13 15:39:31 +04:00

aiocb.c

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async-teardown.c

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async.c

async: avoid use-after-free on re-entrancy guard

2023-05-02 10:03:26 +02:00

atomic64.c

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base64.c

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bitmap.c

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bitops.c

replace TABs with spaces

2023-03-20 12:43:50 +01:00

block-helpers.c

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block-helpers.h

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buffer.c

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bufferiszero.c

include/qemu/cpuid: Introduce xgetbv_low

2023-03-05 13:44:07 -08:00

cacheflush.c

util/cacheflush: fix cache on windows-arm64

2023-02-21 08:53:03 -10:00

compatfd.c

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coroutine-sigaltstack.c

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coroutine-ucontext.c

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coroutine-win32.c

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crc32c.c

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crc-ccitt.c

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cutils.c

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dbus.c

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drm.c

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envlist.c

replace TABs with spaces

2023-03-20 12:43:50 +01:00

error-report.c

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error.c

util/error: Fix use-after-free errors reported by Coverity

2023-04-06 12:38:42 -04:00

event_notifier-posix.c

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event_notifier-win32.c

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fdmon-epoll.c

aio-posix: fix race between epoll upgrade and aio_set_fd_handler()

2023-03-27 15:12:17 +02:00

fdmon-io_uring.c

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fdmon-poll.c

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fifo8.c

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filemonitor-inotify.c

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filemonitor-stub.c

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getauxval.c

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guest-random.c

replay: Extract core API to 'exec/replay-core.h'

2023-02-27 22:29:01 +01:00

hbitmap.c

hbitmap: fix hbitmap_status() return value for first dirty bit case

2023-02-17 14:34:24 +01:00

hexdump.c

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host-utils.c

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id.c

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int128.c

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interval-tree.c

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iov.c

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iova-tree.c

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keyval.c

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lockcnt.c

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log.c

log: Remove unneeded new line

2023-03-08 00:37:48 +01:00

main-loop.c

async: Add an optional reentrancy guard to the BH API

2023-04-28 11:31:07 +02:00

memalign.c

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memfd.c

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meson.build

util: import GTree as QTree

2023-03-28 15:23:10 -07:00

mmap-alloc.c

util/mmap-alloc: qemu_fd_getfs()

2023-04-24 11:29:00 +02:00

module.c

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notify.c

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nvdimm-utils.c

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osdep.c

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oslib-posix.c

util: drop qemu_fork()

2023-03-13 15:23:37 +04:00

oslib-win32.c

win32: add qemu_close_socket_osfhandle()

2023-03-21 11:16:03 +04:00

path.c

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qdist.c

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qemu-co-shared-resource.c

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qemu-co-timeout.c

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qemu-config.c

error: Drop superfluous #include "qapi/qmp/qerror.h"

2023-02-23 13:56:14 +01:00

qemu-coroutine-io.c

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qemu-coroutine-lock.c

qemu-coroutine-lock: add smp_mb__after_rmw()

2023-03-07 12:39:53 +01:00

qemu-coroutine-sleep.c

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qemu-coroutine.c

qemu-coroutine: remove qatomic_mb_read()

2023-04-20 11:17:35 +02:00

qemu-option.c

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qemu-print.c

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qemu-progress.c

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qemu-sockets.c

win32: replace closesocket() with close() wrapper

2023-03-13 15:39:31 +04:00

qemu-thread-common.h

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qemu-thread-posix.c

qemu-thread-posix: cleanup, fix, document QemuEvent

2023-03-07 12:38:40 +01:00

qemu-thread-win32.c

qemu-thread-win32: cleanup, fix, document QemuEvent

2023-03-07 12:38:40 +01:00

qemu-timer-common.c

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qemu-timer.c

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qht.c

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qsp.c

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qtree.c

tcg: use QTree instead of GTree

2023-03-28 15:23:10 -07:00

range.c

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rcu.c

call_rcu: stop using mb_set/mb_read

2023-05-08 11:10:49 +02:00

readline.c

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selfmap.c

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stats64.c

stat64: Add stat64_set() operation

2023-04-27 16:39:43 +02:00

sys_membarrier.c

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systemd.c

systemd: Also clear LISTEN_FDNAMES during systemd socket activation

2023-05-03 14:00:08 -05:00

thread-context.c

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thread-pool.c

thread-pool: avoid passing the pool parameter every time

2023-04-25 13:17:28 +02:00

throttle.c

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timed-average.c

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trace-events

async: Add an optional reentrancy guard to the BH API

2023-04-28 11:31:07 +02:00

trace.h

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transactions.c

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unicode.c

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uri.c

Updated the FSF address to <https://www.gnu.org/licenses/>

2023-02-27 09:15:39 +01:00

userfaultfd.c

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uuid.c

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vfio-helpers.c

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vhost-user-server.c

block/export: only acquire AioContext once for vhost_user_server_stop()

2023-03-27 13:46:30 +02:00

yank.c

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