| From | Jiang Liu <> | Subject | [RFC Patch V1 09/30] mm, memcg: Use cpu_to_mem()/numa_mem_id() to support memoryless node | Date | Fri, 11 Jul 2014 15:37:26 +0800 |
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When CONFIG_HAVE_MEMORYLESS_NODES is enabled, cpu_to_node()/numa_node_id() may return a node without memory, and later cause system failure/panic when calling kmalloc_node() and friends with returned node id. So use cpu_to_mem()/numa_mem_id() instead to get the nearest node with memory for the/current cpu.
If CONFIG_HAVE_MEMORYLESS_NODES is disabled, cpu_to_mem()/numa_mem_id() is the same as cpu_to_node()/numa_node_id().
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> --- mm/memcontrol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index a2c7bcb0e6eb..d6c4b7255ca9 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1933,7 +1933,7 @@ int mem_cgroup_select_victim_node(struct mem_cgroup *memcg) * we use curret node. */ if (unlikely(node == MAX_NUMNODES)) - node = numa_node_id(); + node = numa_mem_id(); memcg->last_scanned_node = node; return node; -- 1.7.10.4
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