From afcc4015d1bf5659b8c722aff679e9b8c41ee156 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 26 Feb 2021 13:48:19 -0700 Subject: io-wq: provide an io_wq_put_and_exit() helper If we put the io-wq from io_uring, we really want it to exit. Provide a helper that does that for us. Couple that with not having the manager hold a reference to the 'wq' and the normal SQPOLL exit will tear down the io-wq context appropriate. On the io-wq side, our wq context is per task, so only the task itself is manipulating ->manager and hence it's safe to check and clear without any extra locking. We just need to ensure that the manager task stays around, in case it exits. Signed-off-by: Jens Axboe --- fs/io-wq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/io-wq.h') diff --git a/fs/io-wq.h b/fs/io-wq.h index b6ca12b60c35..f6ef433df8a8 100644 --- a/fs/io-wq.h +++ b/fs/io-wq.h @@ -114,6 +114,7 @@ struct io_wq_data { struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data); void io_wq_put(struct io_wq *wq); +void io_wq_put_and_exit(struct io_wq *wq); void io_wq_enqueue(struct io_wq *wq, struct io_wq_work *work); void io_wq_hash_work(struct io_wq_work *work, void *val); -- cgit