[PATCH 4.2 107/110] thp: use is_zero_pfn() only after pte_present() check

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Minchan Kim commit 47aee4d8e314384807e98b67ade07f6da476aa75 upstream. Use is_zero_pfn() on pteval only after pte_present() check on pteval (It might be better idea to introduce is_zero_pte()

[PATCH 4.2 107/110] thp: use is_zero_pfn() only after pte_present() check

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Minchan Kim commit 47aee4d8e314384807e98b67ade07f6da476aa75 upstream. Use is_zero_pfn() on pteval only after pte_present() check on pteval (It might be better idea to