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(parent: 5199328) | patch
io_uring: always wait for sqd exited when stopping SQPOLL thread
authorJens Axboe <axboe@kernel.dk>
Tue, 9 Mar 2021 23:32:13 +0000 (16:32 -0700)
committerJens Axboe <axboe@kernel.dk>
Wed, 10 Mar 2021 14:28:43 +0000 (07:28 -0700)
commite8f98f24549d62cc54bf608c815904a56d4437bc
treea545de836d886a769bd0c68c3df1248e1c15135ctree | snapshot
parent5199328a0d415b3e372633096b1b92f36b8ac9e5commit | diff
io_uring: always wait for sqd exited when stopping SQPOLL thread

We have a tiny race where io_put_sq_data() calls io_sq_thead_stop()
and finds the thread gone, but the thread has indeed not fully
exited or called complete() yet. Close it up by always having
io_sq_thread_stop() wait on completion of the exit event.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io_uring.c diff | blob | history
Domain: System / Kernel;