On 9/26/22 8:03 AM, Dylan Yudaken wrote: > Registering the single issuer task from the first submit adds unnecesary > complications to the API as well as the implementation. Where simply > registering it at creation should not impose any barriers to getting the > same performance wins. > > There is another problem in 6.1, with IORING_SETUP_DEFER_TASKRUN. That > would like to check the submitter_task from unlocked contexts, which would > be racy. If upfront the submitter_task is set at creation time it will > simplify the logic there and probably increase performance (though this is > unmeasured). > > Patch 1 registers the task at creation of the io_uring, this works > standalone in case you want to only merge this part for 6.0 > > Patch 2/3 cleans up the code from the old style Applied 1/3 for 6.0, and then created a new branch for 6.1 that holds 2-3/3. Thanks! -- Jens Axboe
