Re: put_page() tries to handle hugepages but fails

[David Gibson <david@gibson.dropbear.id.au>]

On Mon, Apr 26, 2004 at 10:15:19PM -0700, Andrew Morton wrote:
> David Gibson <david@gibson.dropbear.id.au> wrote:
> >
> > 1) put_page() can still theoretically call
> >  __page_cache_release() which is wrong (and makes the code misleading)
> 
> Don't think so?
> 
> void put_page(struct page *page)
> {
> 	if (unlikely(PageCompound(page))) {
> 		page = (struct page *)page->private;
> 		if (put_page_testzero(page)) {
> 			void (*dtor)(struct page *page);
> 
> 			dtor = (void (*)(struct page *))page[1].mapping;
> 			(*dtor)(page);
> 		}
> 		return;
> 	}
> 	if (!PageReserved(page) && put_page_testzero(page))
> 		__page_cache_release(page);
> }

Dang.  Missed that patch in the series.  My mistake.

-- 
David Gibson			| For every complex problem there is a
david AT gibson.dropbear.id.au	| solution which is simple, neat and
				| wrong.
http://www.ozlabs.org/people/dgibson