Re: [PATCH -mm] memcg: remove activate_kmem_mutex

[Vladimir Davydov]

On Mon, Oct 20, 2014 at 08:53:06PM +0200, Michal Hocko wrote:
> On Mon 20-10-14 19:11:29, Vladimir Davydov wrote:
> > The activate_kmem_mutex is used to serialize memcg.kmem.limit updates,
> > but we already serialize them with memcg_limit_mutex so let's remove the
> > former.
> > 
> > Signed-off-by: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
> 
> Is this the case since bd67314586a3 (memcg, slab: simplify
> synchronization scheme)?

No, it's since Johannes' lockless page counters patch where we have the
memcg_limit_mutex introduced to synchronize concurrent limit updates (mm
commit dc1815408849 "mm: memcontrol: lockless page counters").

Thanks,
Vladimir

> Anyway Looks good to me.
> Acked-by: Michal Hocko <mhocko@xxxxxxx>
--
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/