diff options
| -rw-r--r-- | include/linux/mmzone.h | 1 | ||||
| -rw-r--r-- | mm/page_alloc.c | 41 |
2 files changed, 31 insertions, 11 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index d240efa8f846..a5578871d033 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -709,6 +709,7 @@ typedef struct pglist_data { unsigned long node_spanned_pages; /* total size of physical page range, including holes */ int node_id; + nodemask_t reclaim_nodes; /* Nodes allowed to reclaim from */ wait_queue_head_t kswapd_wait; wait_queue_head_t pfmemalloc_wait; struct task_struct *kswapd; /* Protected by lock_memory_hotplug() */ diff --git a/mm/page_alloc.c b/mm/page_alloc.c index dbb53866c3aa..9b8e6243a524 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); |