page count for just allocated pages

["Luciano A. Stertz" <luciano@xxxxxxxxxxxx>]

	I'm trying to understand page's usage counter. A just allocated page 
shouldn't have its page count zeroed?
	I tryied the code below and the result surprised me:

        page = page_cache_alloc_cold(vmapping);
        if (!page) {
                return NULL;
        }

        printk("Page count after alloc: %i\n", page_count(page));

	Result:
	Page count after alloc: 1

	Where is the page count incremented?

	Running kernel 2.6.8-rc3.

	TIA,
		Luciano

--
Luciano A. Stertz
luciano@xxxxxxxxxxxx
T&T Engenheiros Associados Ltda
http://www.tteng.com.br
Fone/Fax (51) 3224 8425

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