diff options
| -rw-r--r-- | mm/page_alloc.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index f7da2a2934b..cefe6fe8d99 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2606,7 +2606,7 @@ static int default_zonelist_order(void) * ZONE_DMA and ZONE_DMA32 can be very small area in the system. * If they are really small and used heavily, the system can fall * into OOM very easily. - * This function detect ZONE_DMA/DMA32 size and confgigures zone order. + * This function detect ZONE_DMA/DMA32 size and configures zone order. */ /* Is there ZONE_NORMAL ? (ex. ppc has only DMA zone..) */ low_kmem_size = 0; @@ -2618,6 +2618,15 @@ static int default_zonelist_order(void) if (zone_type < ZONE_NORMAL) low_kmem_size += z->present_pages; total_size += z->present_pages; + } else if (zone_type == ZONE_NORMAL) { + /* + * If any node has only lowmem, then node order + * is preferred to allow kernel allocations + * locally; otherwise, they can easily infringe + * on other nodes when there is an abundance of + * lowmem available to allocate from. + */ + return ZONELIST_ORDER_NODE; } } } |