Re: [PATCH][2.6.20-rc1-mm1] sparsemem vmem_map optimzed pfn_valid()[0/2]

[Christoph Lameter]

On Sat, 16 Dec 2006, KAMEZAWA Hiroyuki wrote:

> By this, we'll not access mem_section[] in usual ops.

Why do we need mem_section? We have a page table that fulfills the same 
role.
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