Re: [PATCH 5/5] add shmem vmstat

[Wu Fengguang]

On Thu, Jul 09, 2009 at 04:18:01PM +0800, KOSAKI Motohiro wrote:
> ChangeLog
>   Since v1
>    - Fixed misaccounting bug on page migration
> 
> ========================
> Subject: [PATCH] add shmem vmstat
> 
> Recently, We faced several OOM problem by plenty GEM cache. and generally,
> plenty Shmem/Tmpfs potentially makes memory shortage problem.
> 
> We often use following calculation to know shmem pages,
>   shmem = NR_ACTIVE_ANON + NR_INACTIVE_ANON - NR_ANON_PAGES
> but it is wrong expression. it doesn't consider isolated page and
> mlocked page.
> 
> Then, This patch make explicit Shmem/Tmpfs vm-stat accounting.
> 
> 
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>

Acked-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>

Thanks for the nice work!
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