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SubjectRe: [RFC][PATCH v2 10/21] mm: build separate zonelist for PMEM and DRAM node
On Tue, Jan 01, 2019 at 02:44:41PM +0530, Aneesh Kumar K.V wrote:
>Fengguang Wu <fengguang.wu@intel.com> writes:
>
>> From: Fan Du <fan.du@intel.com>
>>
>> When allocate page, DRAM and PMEM node should better not fall back to
>> each other. This allows migration code to explicitly control which type
>> of node to allocate pages from.
>>
>> With this patch, PMEM NUMA node can only be used in 2 ways:
>> - migrate in and out
>> - numactl
>
>Can we achieve this using nodemask? That way we don't tag nodes with
>different properties such as DRAM/PMEM. We can then give the
>flexibilility to the device init code to add the new memory nodes to
>the right nodemask

Aneesh, in patch 2 we did create nodemask numa_nodes_pmem and
numa_nodes_dram. What's your supposed way of "using nodemask"?

Thanks,
Fengguang

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