>> And looking at all the discussions and problems that already happened >> during the development of this series, I think we should rather look >> into how clean free page hinting might solve the same problem. > > I'm not sure I follow the logic. We found that neat tricks > especially re-using the max order free page for reporting. Let me rephrase: history of this series showed that this is some really complicated stuff. I am asking if this complexity is actually necessary. No question that we had a very valuable outcome so far (that especially is also relevant for other projects like Nitesh's proposal - talking about virtio requests and locking). > >> If it can't be solved using free page hinting, fair enough. > > I suspect Nitesh will need to find a way not to have mm code > call out to random drivers or subsystems before that code > is acceptable. > > -- Thanks, David / dhildenb