On Wed, 28 May 2014, Marcelo Tosatti wrote: > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index 5dba293..dfea3dc 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -2698,6 +2698,7 @@ __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order, > unsigned int cpuset_mems_cookie; > int alloc_flags = ALLOC_WMARK_LOW|ALLOC_CPUSET|ALLOC_FAIR; > struct mem_cgroup *memcg = NULL; > + nodemask_t *cpuset_mems_allowed = &cpuset_current_mems_allowed; Why do you need this one? > gfp_mask &= gfp_allowed_mask; > > @@ -2726,9 +2727,14 @@ __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order, > retry_cpuset: > cpuset_mems_cookie = read_mems_allowed_begin(); > > +#ifdef CONFIG_NUMA > + if (gfp_zone(gfp_mask) < policy_zone) > + cpuset_mems_allowed = NULL; nodemask = &node_states[N_ONLINE]; > +#endif > + > /* The preferred zone is used for statistics later */ > first_zones_zonelist(zonelist, high_zoneidx, > - nodemask ? : &cpuset_current_mems_allowed, > + nodemask ? : cpuset_mems_allowed, Skip this? > &preferred_zone); > if (!preferred_zone) > goto out; > Why call __alloc_pages_nodemask at all if you want to skip the node handling? Punt to alloc_pages() -- 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>