| commit | cb3b200e4f66524d03d6410dd51bcf42f265a4d0 | [log] [tgz] |
|---|---|---|
| author | Jens Axboe <axboe@kernel.dk> | Tue Apr 06 09:49:31 2021 -0600 |
| committer | Jens Axboe <axboe@kernel.dk> | Sun Apr 11 19:30:35 2021 -0600 |
| tree | d05a2a97170a702d71d888fe929acef1567e59d6 | |
| parent | 417b5052be9ec892d06a45dbecf6d3f6ae211ae3 [diff] |
io_uring: don't attempt re-add of multishot poll request if racing
We currently allow racy updates to multishot requests, but we can end up
double adding the poll request if both completion and update does it.
Ensure that we skip re-add on the update side if someone else is
completing it.
Fixes: b69de288e913 ("io_uring: allow events and user_data update of running poll requests")
Reported-by: Joakim Hassila <joj@mac.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>