Add nid_zone(), which returns the zone corresponding to a given nid & zonenum.
Signed-off-by: Cody P Schafer <cody@xxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 9ddae00..1b6abae 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -708,9 +708,14 @@ static inline void page_nid_reset_last(struct page *page)
}
#endif
+static inline struct zone *nid_zone(int nid, enum zone_type zonenum)
+{
+ return &NODE_DATA(nid)->node_zones[zonenum];
+}
+
static inline struct zone *page_zone(const struct page *page)
{
- return &NODE_DATA(page_to_nid(page))->node_zones[page_zonenum(page)];
+ return nid_zone(page_to_nid(page), page_zonenum(page));
}
#ifdef SECTION_IN_PAGE_FLAGS
--
1.8.2.1
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