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-rw-r--r--include/linux/nodemask.h1
-rw-r--r--mm/page_alloc.c5
-rw-r--r--mm/vmscan.c4
3 files changed, 6 insertions, 4 deletions
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index ccee962..905e18f 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -349,6 +349,7 @@ enum node_states {
#else
N_HIGH_MEMORY = N_NORMAL_MEMORY,
#endif
+ N_CPU, /* The node has one or more cpus */
NR_NODE_STATES
};
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 07dfd89..161bcb7 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2353,6 +2353,9 @@ static struct per_cpu_pageset boot_pageset[NR_CPUS];
static int __cpuinit process_zones(int cpu)
{
struct zone *zone, *dzone;
+ int node = cpu_to_node(cpu);
+
+ node_set_state(node, N_CPU); /* this node has a cpu */
for_each_zone(zone) {
@@ -2360,7 +2363,7 @@ static int __cpuinit process_zones(int cpu)
continue;
zone_pcp(zone, cpu) = kmalloc_node(sizeof(struct per_cpu_pageset),
- GFP_KERNEL, cpu_to_node(cpu));
+ GFP_KERNEL, node);
if (!zone_pcp(zone, cpu))
goto bad;
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 8765688..8fd8ba1 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1853,7 +1853,6 @@ static int __zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
{
- cpumask_t mask;
int node_id;
/*
@@ -1890,8 +1889,7 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
* as wide as possible.
*/
node_id = zone_to_nid(zone);
- mask = node_to_cpumask(node_id);
- if (!cpus_empty(mask) && node_id != numa_node_id())
+ if (node_state(node_id, N_CPU) && node_id != numa_node_id())
return 0;
return __zone_reclaim(zone, gfp_mask, order);
}
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