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Re: [PATCHv9 29/36] thp: implement split_huge_pmd()

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  Re: [PATCHv9 29/36] thp: implement split_huge_pmd() Jerome Marchand <jmarchan@redhat.com> - 2015-07-31 17:10 +0200
    Re: [PATCHv9 29/36] thp: implement split_huge_pmd() "Kirill A. Shutemov" <kirill@shutemov.name> - 2015-08-03 12:50 +0200

#1197090 — Re: [PATCHv9 29/36] thp: implement split_huge_pmd()

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On 07/20/2015 04:21 PM, Kirill A. Shutemov wrote:
> Original split_huge_page() combined two operations: splitting PMDs into
> tables of PTEs and splitting underlying compound page. This patch
> implements split_huge_pmd() which split given PMD without splitting
> other PMDs this page mapped with or underlying compound page.
> 
> Without tail page refcounting, implementation of split_huge_pmd() is
> pretty straight-forward.

While it's significantly simpler than it used to be, straight-forward is
still not the adjective which come to my mind.

> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Tested-by: Sasha Levin <sasha.levin@oracle.com>
> Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

Acked-by: Jerome Marchand <jmarchan@redhat.com>

> ---
>  include/linux/huge_mm.h |  11 ++++-
>  mm/huge_memory.c        | 122 ++++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 132 insertions(+), 1 deletion(-)
> 

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#1198733

On Fri, Jul 31, 2015 at 05:06:55PM +0200, Jerome Marchand wrote:
> On 07/20/2015 04:21 PM, Kirill A. Shutemov wrote:
> > Original split_huge_page() combined two operations: splitting PMDs into
> > tables of PTEs and splitting underlying compound page. This patch
> > implements split_huge_pmd() which split given PMD without splitting
> > other PMDs this page mapped with or underlying compound page.
> > 
> > Without tail page refcounting, implementation of split_huge_pmd() is
> > pretty straight-forward.
> 
> While it's significantly simpler than it used to be, straight-forward is
> still not the adjective which come to my mind.

The commit message was written to older revision :-P

-- 
 Kirill A. Shutemov
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