On Wed, Apr 17, 2013 at 06:07:33PM +0300, Kirill A. Shutemov wrote: > From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> > > Current implementation of huge zero page uses pfn value 0 to indicate > that the page hasn't allocated yet. It assumes that buddy page allocator > can't return page with pfn == 0. > > Let's rework the code to store 'struct page *' of huge zero page, not > its pfn. This way we can avoid the weak assumption. > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > Reported-by: Minchan Kim <minchan@xxxxxxxxxx> > Acked-by: Minchan Kim <minchan@xxxxxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>