Re: [PATCH] mm: account pmd page tables to the process

[Cyrill Gorcunov]

On Wed, Jan 14, 2015 at 06:51:56PM +0200, Kirill A. Shutemov wrote:
> Dave noticed that unprivileged process can allocate significant amount
> of memory -- >500 MiB on x86_64 -- and stay unnoticed by oom-killer and
> memory cgroup. The trick is to allocate a lot of PMD page tables. Linux
> kernel doesn't account PMD tables to the process, only PTE.
> 
> The use-cases below use few tricks to allocate a lot of PMD page tables
> while keeping VmRSS and VmPTE low. oom_score for the process will be 0.

Reviewed-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
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