io_uring: always grab lock in io_cancel_async_work()
No upstream commit exists for this patch. It's not necessarily safe to check the task_list locklessly, remove this micro optimization and always grab task_lock before deeming it empty. Reported-and-tested-by: Lee Jones <lee@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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00395fd7
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