| commit | 115e12e58dbc055e98c965e3255aed7b20214f95 | [log] [tgz] |
|---|---|---|
| author | Stefan Bühler <source@stbuehler.de> | Wed Apr 24 23:54:18 2019 +0200 |
| committer | Jens Axboe <axboe@kernel.dk> | Tue Apr 30 09:40:02 2019 -0600 |
| tree | be290c72e31a400bb1462eb4cacab2e4c8e64085 | |
| parent | 4f7067c3fb7f2974363a28c597a41949d971af02 [diff] |
io_uring: remove unnecessary barrier before reading cq head The memory operations before reading cq head are unrelated and we don't care about their order. Document that the control dependency in combination with READ_ONCE and WRITE_ONCE forms a barrier we need. Signed-off-by: Stefan Bühler <source@stbuehler.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>