Re: [PATCH v2 5/6] mm: memcg/slab: cache page number in memcg_(un)charge_slab()

Johannes Weiner
2020-01-16T17:27:15Z

On Thu, Jan 09, 2020 at 12:26:58PM -0800, Roman Gushchin wrote:
> There are many places in memcg_charge_slab() and memcg_uncharge_slab()
> which are calculating the number of pages to charge, css references to
> grab etc depending on the order of the slab page.
>
> Let's simplify the code by calculating it once and caching in the
> local variable.
>
> Signed-off-by: Roman Gushchin <guro@fb.com>

Acked-by: Johannes Weiner <hannes@cmpxchg.org>