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SubjectRe: [PATCH v4 17/25] skip memcg kmem allocations in specified code regions
(2012/06/18 19:28), Glauber Costa wrote:
> This patch creates a mechanism that skip memcg allocations during
> certain pieces of our core code. It basically works in the same way
> as preempt_disable()/preempt_enable(): By marking a region under
> which all allocations will be accounted to the root memcg.
>
> We need this to prevent races in early cache creation, when we
> allocate data using caches that are not necessarily created already.
>
> Signed-off-by: Glauber Costa<glommer@parallels.com>
> CC: Christoph Lameter<cl@linux.com>
> CC: Pekka Enberg<penberg@cs.helsinki.fi>
> CC: Michal Hocko<mhocko@suse.cz>
> CC: Kamezawa Hiroyuki<kamezawa.hiroyu@jp.fujitsu.com>
> CC: Johannes Weiner<hannes@cmpxchg.org>
> CC: Suleiman Souhlal<suleiman@google.com>

I'm ok with this approach.

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>




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