On Mon, Sep 14, 2015 at 05:09:31PM +0530, Raghavendra K T wrote: > On 09/14/2015 02:30 PM, Vladimir Davydov wrote: > >On Wed, Sep 09, 2015 at 12:01:46AM +0530, Raghavendra K T wrote: > >>The functions used in the patch are in slowpath, which gets called > >>whenever alloc_super is called during mounts. > >> > >>Though this should not make difference for the architectures with > >>sequential numa node ids, for the powerpc which can potentially have > >>sparse node ids (for e.g., 4 node system having numa ids, 0,1,16,17 > >>is common), this patch saves some unnecessary allocations for > >>non existing numa nodes. > >> > >>Even without that saving, perhaps patch makes code more readable. > > > >Do I understand correctly that node 0 must always be in > >node_possible_map? I ask, because we currently test > >lru->node[0].memcg_lrus to determine if the list is memcg aware. > > > > Yes, node 0 is always there. So it should not be a problem. I think it should be mentioned in the comment to list_lru_memcg_aware then. Thanks, Vladimir -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>