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io_uring: kill extra wake_up_process in tw add

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TWA_SIGNAL already wakes the thread, no need in wake_up_process() after
it.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/7e90cf643f633e857443e0c9e72471b221735c50.1631115443.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2021-09-08 16:40:53 +01:00 committed by Jens Axboe
parent c450178d9b
commit d97ec6239a
1 changed files with 3 additions and 2 deletions
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5
fs/io_uring.c
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@ -2197,8 +2197,9 @@ static void io_req_task_work_add(struct io_kiocb *req)
* will do the job.
*/
notify = (req->ctx->flags & IORING_SETUP_SQPOLL) ? TWA_NONE : TWA_SIGNAL;
if (!task_work_add(tsk, &tctx->task_work, notify)) {
wake_up_process(tsk);
if (likely(!task_work_add(tsk, &tctx->task_work, notify))) {
if (notify == TWA_NONE)
wake_up_process(tsk);
return;
}