Most of the work was probably debugging the issue and pinning down the cause. I guess we have all had issues which took a lot of time to debug, but the actual f

Most of the work was probably debugging the issue and pinning down the cause. I guess we have all had issues which took a lot of time to debug, but the actual fix was just a few lines (or even just a few characters). And you have to do that work "up front" - I mean, asking the Linux maintainers in advance if they're ok with you trying to pin down an issue you're facing would sound a bit strange?