io_uring: single shot poll removal optimisation

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We don't need to poll oneshot request if we've got a desired mask in
io_poll_wake(), task_work will clean it up correctly, but as we already
hold a wq spinlock, we can remove ourselves and save on additional
spinlocking in io_poll_remove_entries().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/ee170a344a18c9ef36b554d806c64caadfd61c31.1639605189.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-12-15 22:08:49 +00:00 • committed by Jens Axboe

parent aa43477b04

commit eb0089d629

1 changed files with 7 additions and 1 deletions

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fs/io_uring.c

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