| Subject | Re: [RFC PATCH 00/24] mm/hugetlb: Free some vmemmap pages of hugetlb page | From | Dave Hansen <> | Date | Tue, 15 Sep 2020 07:53:59 -0700 |
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On 9/15/20 7:32 AM, Matthew Wilcox 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.
Yeah, exactly.
Does this series survive the in-kernel selftests/? If so, sounds like we need to add a new selftest.
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