On Fri, Oct 10, 2014 at 07:35:15AM -0700, Dave Hansen wrote: > On 10/10/2014 06:21 AM, Fengwei Yin wrote: > > @@ -787,6 +788,9 @@ check_pfn: > > return NULL; > > } > > > > + if (is_huge_zero_pfn(pfn)) > > + return NULL; > > + > > That looks a lot better. One thing, why not put the is_huge_zero_pfn() > check next to the is_zero_pfn() check?
On the arch which has PTE_SPECIAL feaure, we need to make sure the is_huge_zero_pfn() is called after the pfn is checked if !pte_special(). -- 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/
