| Date | Sat, 12 Jul 2014 14:32:01 +0200 | From | Jens Axboe <> | Subject | Re: [RFC Patch V1 01/30] mm, kernel: Use cpu_to_mem()/numa_mem_id() to support memoryless node |
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On 2014-07-11 09:37, Jiang Liu wrote: > 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().
I think blk-mq requires some of the same help, as do other places in the block layer. I'll take a look at that.
As for you smp.c bits here:
Acked-by: Jens Axboe <axboe@fb.com>
-- Jens Axboe
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