On Tue, Dec 02, 2014 at 05:27:36PM +0800, Wang, Yalin wrote: > This patch add/dec zero_page's _mapcount to make sure > the mapcount is correct for zero_page, > so that when read from /proc/kpagecount, zero_page's > mapcount is also correct, userspace process like procrank can > calculate PSS correctly.
I don't have specific code path to point to, but I would expect zero page with non-zero mapcount would cause a problem with rmap. How do you test the change? -- Kirill A. Shutemov -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/