Pavel Begunkov 74a37ce697 io_uring: fix waiters missing wake ups ...

There are reports of mariadb hangs, which is caused by a missing
barrier in the waking code resulting in waiters losing events.

The problem was introduced in a backport
3ab9326f93 ("io_uring: wake up optimisations"),
and the change restores the barrier present in the original commit
3ab9326f93 ("io_uring: wake up optimisations")

Reported by: Xan Charbonnet <xan@charbonnet.com>
Fixes: 3ab9326f93 ("io_uring: wake up optimisations")
Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1093243#99
Reviewed-by: Li Zetao <lizetao1@huawei.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-02-01 18:30:09 +01:00

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advise.c

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advise.h

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alloc_cache.h

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cancel.c

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cancel.h

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epoll.c

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epoll.h

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fdinfo.c

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fdinfo.h

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filetable.c

io_uring: drop any code related to SCM_RIGHTS

2024-03-26 18:20:22 -04:00

filetable.h

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fs.c

io_uring/fs: consider link->flags when getting path for LINKAT

2023-12-03 07:32:11 +01:00

fs.h

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io_uring.c

io_uring: fix waiters missing wake ups

2025-02-01 18:30:09 +01:00

io_uring.h

io_uring/rw: avoid punting to io-wq directly

2024-12-27 13:53:02 +01:00

io-wq.c

io_uring/io-wq: inherit cpuset of cgroup in io worker

2024-10-17 15:21:14 +02:00

io-wq.h

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kbuf.c

io_uring: check for non-NULL file pointer in io_file_can_poll()

2024-06-21 14:35:42 +02:00

kbuf.h

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Makefile

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msg_ring.c

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msg_ring.h

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net.c

io_uring/net: harden multishot termination case for recv

2024-10-17 15:22:05 +02:00

net.h

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nop.c

io_uring: fail NOP if non-zero op flags is passed in

2024-06-12 11:02:55 +02:00

nop.h

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notif.c

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notif.h

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opdef.c

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opdef.h

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openclose.c

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openclose.h

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poll.c

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poll.h

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refs.h

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rsrc.c

io_uring: drop any code related to SCM_RIGHTS

2024-03-26 18:20:22 -04:00

rsrc.h

io_uring: drop any code related to SCM_RIGHTS

2024-03-26 18:20:22 -04:00

rw.c

io_uring/rw: avoid punting to io-wq directly

2024-12-27 13:53:02 +01:00

rw.h

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slist.h

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splice.c

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splice.h

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sqpoll.c

io_uring/sqpoll: fix sqpoll error handling races

2025-01-02 10:30:54 +01:00

sqpoll.h

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statx.c

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statx.h

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sync.c

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sync.h

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tctx.c

io_uring/tctx: work around xa_store() allocation error issue

2024-12-14 19:54:49 +01:00

tctx.h

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timeout.c

io_uring: fix io_match_task must_hold

2024-08-03 08:49:53 +02:00

timeout.h

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uring_cmd.c

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uring_cmd.h

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xattr.c

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xattr.h

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