io_uring: get rid of atomic FAA for cq_timeouts

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If ->cq_timeouts modifications are done under ->completion_lock, we
don't really nee any fetch-and-add and other complex atomics. Replace it
with non-atomic FAA, that saves an implicit full memory barrier.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2020-07-30 18:43:50 +03:00 • committed by Jens Axboe

parent 4693014340

commit 01cec8c18f

1 changed files with 5 additions and 3 deletions

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fs/io_uring.c

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