[PATCH v2 08/10] mm/page_alloc: correct the use of is_highmem_idx()

[js1304]

From: Joonsoo Kim <iamjoonsoo....@lge.com>

What we'd like to check here is whether page has direct mapping or not.
Use PageHighMem() since it is perfectly matched for this purpose.

Acked-by: Roman Gushchin <g...@fb.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo....@lge.com>
---
 mm/page_alloc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 7fe5115..da473c7 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1399,7 +1399,7 @@ static void __meminit __init_single_page(struct page 
*page, unsigned long pfn,
        INIT_LIST_HEAD(&page->lru);
 #ifdef WANT_PAGE_VIRTUAL
        /* The shift won't overflow because ZONE_NORMAL is below 4G. */
-       if (!is_highmem_idx(zone))
+       if (!PageHighMem(page))
                set_page_address(page, __va(pfn << PAGE_SHIFT));
 #endif
 }
-- 
2.7.4