Commit 1cbd9c2b authored by Jens Axboe's avatar Jens Axboe
Browse files

io-wq: don't create any IO workers upfront 



When the manager thread starts up, it creates a worker per node for
the given context. Just let these get created dynamically, like we do
for adding further workers.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 7c25c0d1

fs/io-wq.c

+0 −12
Original line number Diff line number Diff line
@@ -759,18 +759,7 @@ static int io_wq_manager(void *data) 
	struct io_wq *wq = data;

	int node;



	/* create fixed workers */

	refcount_set(&wq->refs, 1);

	for_each_node(node) {

		if (!node_online(node))

			continue;

		if (create_io_worker(wq, wq->wqes[node], IO_WQ_ACCT_BOUND))

			continue;

		set_bit(IO_WQ_BIT_ERROR, &wq->state);

		set_bit(IO_WQ_BIT_EXIT, &wq->state);

		goto out;

	}



	complete(&wq->done);



	while (!kthread_should_stop()) {
@@ -796,7 +785,6 @@ static int io_wq_manager(void *data) 
		schedule_timeout(HZ);

	}



out:

	if (refcount_dec_and_test(&wq->refs)) {

		complete(&wq->done);

		return 0;