Re: [PATCH v4 17/25] skip memcg kmem allocations in specified coderegions

[Kamezawa Hiroyuki]

(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@xxxxxxxxxxxxx>
> CC: Christoph Lameter<cl@xxxxxxxxx>
> CC: Pekka Enberg<penberg@xxxxxxxxxxxxxx>
> CC: Michal Hocko<mhocko@xxxxxxx>
> CC: Kamezawa Hiroyuki<kamezawa.hiroyu@xxxxxxxxxxxxxx>
> CC: Johannes Weiner<hannes@xxxxxxxxxxx>
> CC: Suleiman Souhlal<suleiman@xxxxxxxxxx>

I'm ok with this approach.

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


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/