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SubjectRe: [PATCHv3] mm: Account pud page tables
On Mon, 2017-10-02 at 11:04 +0300, Kirill A. Shutemov wrote:
> On machine with 5-level paging support a process can allocate
> significant amount of memory and stay unnoticed by oom-killer and
> memory cgroup. The trick is to allocate a lot of PUD page tables.
> We don't account PUD page tables, only PMD and PTE.
> We already addressed the same issue for PMD page tables, see
> dc6c9a35b66b ("mm: account pmd page tables to the process").
> Introduction 5-level paging bring the same issue for PUD page tables.
> The patch expands accounting to PUD level.
> Signed-off-by: Kirill A. Shutemov <>
> Cc: Michal Hocko <>
> Cc: Vlastimil Babka <>

Acked-by: Rik van Riel <>

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