Re: [PATCH] Tight check of pfn_valid on sparsemem - v4

From: Christoph Lameter
Date: Tue Jul 27 2010 - 10:35:11 EST

On Tue, 27 Jul 2010, Minchan Kim wrote:

> But in fact I have a concern to use PG_reserved since it can be used
> afterward pfn_valid normally to check hole in non-hole system. So I
> think it's redundant.

PG_reserved is already used to mark pages not handled by the page
allocator (see mmap_init_zone).

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at