On Tue, Sep 15, 2020 at 10:32 PM Matthew Wilcox <[email protected]> wrote: > > On Tue, Sep 15, 2020 at 08:59:23PM +0800, Muchun Song wrote: > > This patch series will free some vmemmap pages(struct page structures) > > associated with each hugetlbpage when preallocated to save memory. > > It would be lovely to be able to do this. Unfortunately, it's completely > impossible right now. Consider, for example, get_user_pages() called > on the fifth page of a hugetlb page.
Can you elaborate on the problem? Thanks so much. > > I've spent a lot of time thinking about this, and there's a lot of work > that needs to happen before we can do this, mostly in device drivers. > Do you want to help? It's a multi-year project. Welcome, we can work together. -- Yours, Muchun
