ovs: do not allocate memory from offline numa node

When openvswitch tries allocate memory from offline numa node 0:
stats = kmem_cache_alloc_node(flow_stats_cache, GFP_KERNEL | __GFP_ZERO, 0)
It catches VM_BUG_ON(nid < 0 || nid >= MAX_NUMNODES || !node_online(nid))
[ replaced with VM_WARN_ON(!node_online(nid)) recently ] in linux/gfp.h
This patch disables numa affinity in this case.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
index f2ea83ba47631d4f650aa3dcf2f9c66cf4fd1c6f..c7f74aab34b9ef7d2befcd571d44290b76fbfbc1 100644 (file)
--- a/net/openvswitch/flow_table.c
+++ b/net/openvswitch/flow_table.c
@@ -93,7 +93,8 @@ struct sw_flow *ovs_flow_alloc(void)
 
        /* Initialize the default stat node. */
        stats = kmem_cache_alloc_node(flow_stats_cache,
-                                     GFP_KERNEL | __GFP_ZERO, 0);
+                                     GFP_KERNEL | __GFP_ZERO,
+                                     node_online(0) ? 0 : NUMA_NO_NODE);
        if (!stats)
                goto err;