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io_uring: fix missing io_queue_linked_timeout() 

Whoever called io_prep_linked_timeout() should also do
io_queue_linked_timeout(). __io_queue_sqe() doesn't follow that for the
punting path leaving linked timeouts prepared but never queued.

Fixes: 6df1db6b54 ("io_uring: fix mis-refcounting linked timeouts")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-07-25 14:41:59 +03:00 committed by Jens Axboe
parent b65e0dd6a2
commit f063c5477e
1 changed files with 13 additions and 13 deletions
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26
fs/io_uring.c
View File

@ -5987,20 +5987,20 @@ again:
* doesn't support non-blocking read/write attempts
*/
if (ret == -EAGAIN && !(req->flags & REQ_F_NOWAIT)) {
if (io_arm_poll_handler(req)) {
if (linked_timeout)
io_queue_linked_timeout(linked_timeout);
goto exit;
}
if (!io_arm_poll_handler(req)) {
punt:
ret = io_prep_work_files(req);
if (unlikely(ret))
goto err;
/*
* Queued up for async execution, worker will release
* submit reference when the iocb is actually submitted.
*/
io_queue_async_work(req);
ret = io_prep_work_files(req);
if (unlikely(ret))
goto err;
/*
* Queued up for async execution, worker will release
* submit reference when the iocb is actually submitted.
*/
io_queue_async_work(req);
}
if (linked_timeout)
io_queue_linked_timeout(linked_timeout);
goto exit;
}