On 10/7/19 5:18 PM, Pavel Begunkov (Silence) wrote: > From: Pavel Begunkov <[email protected]> > > Any changes interesting to tasks waiting in io_cqring_wait() are > commited with io_cqring_ev_posted(). However, io_ring_drop_ctx_refs() > also tries to do that but with no reason, that means spurious wakeups > every io_free_req() and io_uring_enter(). > > Just use percpu_ref_put() instead.
Looks good, this is a leftover from when the ctx teardown used the waitqueue as well. -- Jens Axboe
