Re: [patch] memcg: add memcg sanity checks at allocating andfreeing pages

[KAMEZAWA Hiroyuki]

On Thu, 3 Feb 2011 15:15:33 +0100
Johannes Weiner <hannes@xxxxxxxxxxx> wrote:

> From: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx>
> 
> This patch add checks at allocating or freeing a page whether the page is used
> (iow, charged) from the view point of memcg.
> 
> This check may be useful in debugging a problem and we did similar checks
> before the commit 52d4b9ac(memcg: allocate all page_cgroup at boot).
> 
> This patch adds some overheads at allocating or freeing memory, so it's enabled
> only when CONFIG_DEBUG_VM is enabled.
> 
> Signed-off-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx>
> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>


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