Commit d78298e7 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
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io-wq: don't resched if there is no work 



This little tweak restores the behaviour that was before the recent
io_worker_handle_work() optimisation patches. It makes the function do
cond_resched() and flush_signals() only if there is an actual work to
execute.

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 2293b419

fs/io-wq.c

+6 −4
Original line number Diff line number Diff line
@@ -458,10 +458,12 @@ static void io_impersonate_work(struct io_worker *worker, 
static void io_assign_current_work(struct io_worker *worker,

				   struct io_wq_work *work)

{

	if (work) {

		/* flush pending signals before assigning new work */

		if (signal_pending(current))

			flush_signals(current);

		cond_resched();

	}



	spin_lock_irq(&worker->lock);

	worker->cur_work = work;