[3.19.y-ckt stable] Patch "ovs: do not allocate memory from offline numa node" has been added to staging queue
Kamal Mostafa
kamal at canonical.com
Thu Nov 12 23:14:23 UTC 2015
This is a note to let you know that I have just added a patch titled
ovs: do not allocate memory from offline numa node
to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue
This patch is scheduled to be released in version 3.19.8-ckt10.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
------
>From fa9a0798a48a94ca77d6c075222e5519ad224559 Mon Sep 17 00:00:00 2001
From: Konstantin Khlebnikov <khlebnikov at yandex-team.ru>
Date: Fri, 2 Oct 2015 13:18:22 +0300
Subject: [PATCH 060/120] 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 at yandex-team.ru>
Acked-by: Pravin B Shelar <pshelar at nicira.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
net/openvswitch/flow_table.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
index 514c6233..1124365 100644
--- a/net/openvswitch/flow_table.c
+++ b/net/openvswitch/flow_table.c
@@ -90,7 +90,8 @@ 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;
--
1.9.1
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