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authorJens Axboe <axboe@kernel.dk>2021-02-26 13:48:19 -0700
committerJens Axboe <axboe@kernel.dk>2021-03-04 06:34:39 -0700
commitafcc4015d1bf5659b8c722aff679e9b8c41ee156 (patch)
tree107b0e65a3d2e5218cd1967b71f3e07d38856839 /fs/io-wq.h
parent8629397e6e2753bb4cc62ba48a12e1d4d912b6a4 (diff)
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 <axboe@kernel.dk>
Diffstat (limited to 'fs/io-wq.h')
-rw-r--r--fs/io-wq.h1
1 files changed, 1 insertions, 0 deletions
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);