Re: [External] Re: [PATCH v20 4/9] mm: hugetlb: free the vmemmap pages associated with each HugeTLB page

On Sat, Apr 17, 2021 at 5:10 AM Mike Kravetz wrote: > > On 4/15/21 1:40 AM, Muchun Song wrote: > > Every HugeTLB has more than one struct page structure. We __know__ that > > we only use the first 4 (__NR_USED_SUBPAGE) struct page structures > > to store metadata associated with each HugeTLB. > >

Re: [PATCH v20 4/9] mm: hugetlb: free the vmemmap pages associated with each HugeTLB page

On 4/15/21 1:40 AM, Muchun Song wrote: > Every HugeTLB has more than one struct page structure. We __know__ that > we only use the first 4 (__NR_USED_SUBPAGE) struct page structures > to store metadata associated with each HugeTLB. > > There are a lot of struct page structures associated with

[PATCH v20 4/9] mm: hugetlb: free the vmemmap pages associated with each HugeTLB page

Every HugeTLB has more than one struct page structure. We __know__ that we only use the first 4 (__NR_USED_SUBPAGE) struct page structures to store metadata associated with each HugeTLB. There are a lot of struct page structures associated with each HugeTLB page. For tail pages, the value of