On Mon, 28 May 2007 21:16:32 +0200
Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
+ for_each_online_pgdat(pgdat) {
+ for (i = 0; i < pgdat->node_spanned_pages; i++) {
+ struct page *page = pgdat->node_mem_map + i;
+ total++;
+ if (PageReserved(page))
+ reserved++;
+ else if (PageSwapCache(page))
+ cached++;
+ else if (!page_count(page))
+ free++;
This isn't really true. Callers of the page allocator don't _have_ to use
page_count(): they can internally perform their own refcounting. One such
caller is slab, so this "free" count can end up being grossly wrong.
+ else
+ shared += page_count(page) - 1;
+ }
-
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