On Wed, Nov 06, 2024 at 06:56:34PM +0800, Yunsheng Lin wrote: > > It is a very radical change that page_pool needs to keep track of *ALL* in-flight pages. > > I am agreed that it is a radical change, that is why it is targetting net-next > tree instead of net tree even when there is a Fixes tag for it. > > If there is a proper and non-radical way to fix that, I would prefer the > non-radical way too. As Robin already correctly pointed out DMA mappings fundamentally can't outlive the devices they were performed on. So I don't think there will be much hope for a non-radical fix for this design fault.
