> What is the justifucation for making this rate limit per UID and not > per task, per process or systemwide?
The concern is that a malicious user is running a workload that loops obtaining the buslock. This brings the whole system to its knees. Limiting per task doesn't help. The user can just fork(2) a whole bunch of tasks for a distributed buslock attack.. Systemwide might be an interesting alternative. Downside would be accidental rate limit of non-malicious tasks that happen to grab a bus lock periodically but in the same window with other buslocks from other users. Do you think that a risk worth taking to make the code simpler? -Tony
