[ovs-dev] [PATCH] ovs: do not allocate memory from offline numa node

David Miller davem at davemloft.net
Mon Oct 5 13:44:51 UTC 2015


From: Konstantin Khlebnikov <khlebnikov at yandex-team.ru>
Date: Fri, 02 Oct 2015 13:18:22 +0300

> 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>

Applied, but this should probably use NUMA_NO_NODE unconditionally.



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