Re: [PATCH mmotm] mm: alloc_large_system_hash check order

From: Christoph Lameter
Date: Fri May 01 2009 - 11:25:23 EST


On Fri, 1 May 2009, Mel Gorman wrote:

> But IIRC, the vmemmap code depends on architecture-specific help from
> vmemmap_populate() to place the map in the right place and it's not universally
> available. It's likely that similar would be needed to support large
> hash tables. I think the networking guys would need to be fairly sure
> the larger table would make a big difference before tackling the
> problem.

The same function could be used. Fallback to vmap is always possible.

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