tree 7a304c35d79ba4d12a169e89fe0f1c93629cc2d5
parent 6112c0f5a86c6b437e7158ab40a6e9384ce95e85
author Jens Axboe <axboe@kernel.dk> 1664371738 -0600
committer Jens Axboe <axboe@kernel.dk> 1664374012 -0600

t/io_uring: get rid of useless read barriers

We don't need a read barrier when we have acquire semantics on reading
the CQ ring tail.

We also don't need acquire semantics on the SQ ring head, unless we're
using SQPOLL. A syscall transition will have happened for !SQPOLL.

Signed-off-by: Jens Axboe <axboe@kernel.dk>