ovs: do not allocate memory from offline numa node

[ Upstream commit 598c12d0ba6de9060f04999746eb1e015774044b ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
index aa349514e4cb5da84f9184c5a02038b8d6fff862..eed562295c7881757383e1712140e0d8ec3362b0 100644 (file)
--- a/net/openvswitch/flow_table.c
+++ b/net/openvswitch/flow_table.c
@@ -92,7 +92,8 @@ 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;