io_uring: honour zeroes as io-wq worker limits
When we pass in zero as an io-wq worker number limit it shouldn't actually change the limits but return the old value, follow that behaviour with deferred limits setup as well. Cc: stable@kernel.org # 5.15 Reported-by:Beld Zhang <beldzhang@gmail.com> Fixes: e139a1ec ("io_uring: apply max_workers limit to all future users") Signed-off-by:
Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/1b222a92f7a78a24b042763805e891a4cdd4b544.1636384034.git.asml.silence@gmail.com Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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