Commit 3adfecaa authored Jun 28, 2020 by Pavel Begunkov Committed by Jens Axboe Jun 28, 2020

io_uring: do task_work_run() during iopoll



There are a lot of new users of task_work, and some of task_work_add()
may happen while we do io polling, thus make iopoll from time to time
to do task_work_run(), so it doesn't poll for sitting there reqs.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 6795c5ab

fs/io_uring.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2052,6 +2052,8 @@ static int io_iopoll_check(struct io_ring_ctx ctx, unsigned nr_events,
		*/
		if (!(++iters & 7)) {
		mutex_unlock(&ctx->uring_lock);
		if (current->task_works)
		task_work_run();
		mutex_lock(&ctx->uring_lock);
		}

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