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Date:   Sat, 21 Oct 2023 16:42:38 +0900
From:   Sergey Senozhatsky <>
To:     Mike Kravetz <>
        Muchun Song <>,
        Joao Martins <>,
        Konrad Dybcio <>,
        Oscar Salvador <>,
        David Hildenbrand <>,
        Miaohe Lin <>,
        David Rientjes <>,
        Anshuman Khandual <>,
        Naoya Horiguchi <>,
        Barry Song <>, Michal Hocko <>,
        Matthew Wilcox <>,
        Xiongchun Duan <>,
        Sergey Senozhatsky <>,
        Usama Arif <>,
        Andrew Morton <>
Subject: Re: [PATCH v8 2/8] hugetlb: restructure pool allocations

On (23/10/18 19:31), Mike Kravetz wrote:
> Allocation of a hugetlb page for the hugetlb pool is done by the routine
> alloc_pool_huge_page.  This routine will allocate contiguous pages from
> a low level allocator, prep the pages for usage as a hugetlb page and
> then add the resulting hugetlb page to the pool.
> In the 'prep' stage, optional vmemmap optimization is done.  For
> performance reasons we want to perform vmemmap optimization on multiple
> hugetlb pages at once.  To do this, restructure the hugetlb pool
> allocation code such that vmemmap optimization can be isolated and later
> batched.
> The code to allocate hugetlb pages from bootmem was also modified to
> allow batching.
> No functional changes, only code restructure.
> Signed-off-by: Mike Kravetz <>

Tested-by: Sergey Senozhatsky <>

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