[PATCH] slab: Node rotor for freeing alien caches and remote per cpu pages.

[thirdparty/kernel/linux.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 791690d7d3fa02e4e5956af69fffedf654088adc..234bd4895d14dc9a837473ce5474eee03253b0f1 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -590,21 +590,20 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order,
 }
 
 #ifdef CONFIG_NUMA
-/* Called from the slab reaper to drain remote pagesets */
-void drain_remote_pages(void)
+/*
+ * Called from the slab reaper to drain pagesets on a particular node that
+ * belong to the currently executing processor.
+ */
+void drain_node_pages(int nodeid)
 {
-       struct zone *zone;
-       int i;
+       int i, z;
        unsigned long flags;
 
        local_irq_save(flags);
-       for_each_zone(zone) {
+       for (z = 0; z < MAX_NR_ZONES; z++) {
+               struct zone *zone = NODE_DATA(nodeid)->node_zones + z;
                struct per_cpu_pageset *pset;
 
-               /* Do not drain local pagesets */
-               if (zone->zone_pgdat->node_id == numa_node_id())
-                       continue;
-
                pset = zone_pcp(zone, smp_processor_id());
                for (i = 0; i < ARRAY_SIZE(pset->pcp); i++) {
                        struct per_cpu_pages *pcp;