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io_uring: signal SQPOLL task_work with TWA_SIGNAL_NO_IPI

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commit dbcabac138fdfc730ba458ed2199ff1f29a271fc upstream.

Before SQPOLL was transitioned to managing its own task_work, the core
used TWA_SIGNAL_NO_IPI to ensure that task_work was processed. If not,
we can't be sure that all task_work is processed at SQPOLL thread exit
time.

Fixes: af5d68f8892f ("io_uring/sqpoll: manage task_work privately")
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jens Axboe 2024-06-24 19:07:18 -06:00 committed by Greg Kroah-Hartman
parent c6b5ff549a
commit f217e335bd
1 changed files with 2 additions and 2 deletions
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4
io_uring/io_uring.c
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@ -1374,8 +1374,8 @@ static void io_req_normal_work_add(struct io_kiocb *req)
if (ctx->flags & IORING_SETUP_SQPOLL) {
struct io_sq_data *sqd = ctx->sq_data;
if (wq_has_sleeper(&sqd->wait))
wake_up(&sqd->wait);
if (sqd->thread)
__set_notify_signal(sqd->thread);
return;
}