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-rw-r--r--mm/page_alloc.c41
1 files changed, 30 insertions, 11 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index dbb5386..9b8e624 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1799,6 +1799,22 @@ static void zlc_clear_zones_full(struct zonelist *zonelist)
bitmap_zero(zlc->fullzones, MAX_ZONES_PER_ZONELIST);
}
+static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone)
+{
+ return node_isset(local_zone->node, zone->zone_pgdat->reclaim_nodes);
+}
+
+static void __paginginit init_zone_allows_reclaim(int nid)
+{
+ int i;
+
+ for_each_online_node(i)
+ if (node_distance(nid, i) <= RECLAIM_DISTANCE) {
+ node_set(i, NODE_DATA(nid)->reclaim_nodes);
+ zone_reclaim_mode = 1;
+ }
+}
+
#else /* CONFIG_NUMA */
static nodemask_t *zlc_setup(struct zonelist *zonelist, int alloc_flags)
@@ -1819,6 +1835,15 @@ static void zlc_mark_zone_full(struct zonelist *zonelist, struct zoneref *z)
static void zlc_clear_zones_full(struct zonelist *zonelist)
{
}
+
+static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone)
+{
+ return true;
+}
+
+static inline void init_zone_allows_reclaim(int nid)
+{
+}
#endif /* CONFIG_NUMA */
/*
@@ -1903,7 +1928,8 @@ zonelist_scan:
did_zlc_setup = 1;
}
- if (zone_reclaim_mode == 0)
+ if (zone_reclaim_mode == 0 ||
+ !zone_allows_reclaim(preferred_zone, zone))
goto this_zone_full;
/*
@@ -3364,21 +3390,13 @@ static void build_zonelists(pg_data_t *pgdat)
j = 0;
while ((node = find_next_best_node(local_node, &used_mask)) >= 0) {
- int distance = node_distance(local_node, node);
-
- /*
- * If another node is sufficiently far away then it is better
- * to reclaim pages in a zone before going off node.
- */
- if (distance > RECLAIM_DISTANCE)
- zone_reclaim_mode = 1;
-
/*
* We don't want to pressure a particular node.
* So adding penalty to the first node in same
* distance group to make it round-robin.
*/
- if (distance != node_distance(local_node, prev_node))
+ if (node_distance(local_node, node) !=
+ node_distance(local_node, prev_node))
node_load[node] = load;
prev_node = node;
@@ -4552,6 +4570,7 @@ void __paginginit free_area_init_node(int nid, unsigned long *zones_size,
pgdat->node_id = nid;
pgdat->node_start_pfn = node_start_pfn;
+ init_zone_allows_reclaim(nid);
calculate_node_totalpages(pgdat, zones_size, zholes_size);
alloc_node_mem_map(pgdat);
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