Re: [PATCHv2, RFC 19/30] thp, mm: split huge page on mmap file page

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On Fri, Mar 15, 2013 at 9:29 PM, Kirill A. Shutemov
<kirill.shutemov@xxxxxxxxxxxxxxx> wrote:
> Hillf Danton wrote:
>> On Fri, Mar 15, 2013 at 1:50 AM, Kirill A. Shutemov
>> <kirill.shutemov@xxxxxxxxxxxxxxx> wrote:
>> >
>> > We are not ready to mmap file-backed tranparent huge pages.
>> >
>> It is not on todo list either.
>
> Actually, following patches implement mmap for file-backed thp and this
> split_huge_page() will catch only fallback cases.
>
I wonder if the effort we pay for THP cache is nuked by mmap.
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