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io-wq: use __set_notify_signal() to wake workers 

The only difference between set_notify_signal() and __set_notify_signal()
is that the former checks if it needs to deliver an IPI to force a
reschedule. As the io-wq workers never leave the kernel, and IPI is never
needed, they simply need a wakeup.

Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/20220426014904.60384-4-axboe@kernel.dk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2022-04-25 19:49:01 -06:00
parent 3a4b89a25c
commit 6cf5862e3c
1 changed files with 2 additions and 2 deletions
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4
fs/io-wq.c
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@ -871,7 +871,7 @@ static bool io_wq_for_each_worker(struct io_wqe *wqe,
static bool io_wq_worker_wake(struct io_worker *worker, void *data)
{
set_notify_signal(worker->task);
__set_notify_signal(worker->task);
wake_up_process(worker->task);
return false;
}
@ -991,7 +991,7 @@ static bool __io_wq_worker_cancel(struct io_worker *worker,
{
if (work && match->fn(work, match->data)) {
work->flags |= IO_WQ_WORK_CANCEL;
set_notify_signal(worker->task);
__set_notify_signal(worker->task);
return true;
}