On Mon 26-09-11 16:11:52, Shaohua Li wrote: > I saw DMA zone is always unreclaimable in my system. > zone->all_unreclaimable isn't initialized till a page from the zone is > freed. This isn't a big problem normally, but a little confused, so > fix here. The value is initialized when a node is allocated. setup_node_data uses alloc_remap which memsets the whole structure or memblock allocation which is initialized to 0 as well AFAIK and memory hotplug uses arch_alloc_nodedata which is kzalloc. > > Signed-off-by: Shaohua Li <shaohua.li@xxxxxxxxx> > > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index 6e8ecb6..1facc05 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -4335,6 +4335,7 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat, > zone_pcp_init(zone); > for_each_lru(l) > INIT_LIST_HEAD(&zone->lru[l].list); > + zone->all_unreclaimable = 0; > zone->reclaim_stat.recent_rotated[0] = 0; > zone->reclaim_stat.recent_rotated[1] = 0; > zone->reclaim_stat.recent_scanned[0] = 0; > > > -- > 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/ . > Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ > Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a> -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>