Re: [RFC V2 02/12] mm: Isolate HugeTLB allocations away from CDM nodes

From: Dave Hansen
Date: Mon Jan 30 2017 - 12:20:06 EST

On 01/29/2017 07:35 PM, Anshuman Khandual wrote:
> HugeTLB allocation/release/accounting currently spans across all the nodes
> under N_MEMORY node mask. Coherent memory nodes should not be part of these
> allocations. So use system_ram() call to fetch system RAM only nodes on the
> platform which can then be used for HugeTLB allocation purpose instead of
> N_MEMORY node mask. This isolates coherent device memory nodes from HugeTLB
> allocations.

Does this end up making it impossible to use hugetlbfs to access device