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-rw-r--r--mm/internal.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h
index 6636e1d3ecf0..ad9400d759c8 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -132,6 +132,18 @@ __find_buddy_index(unsigned long page_idx, unsigned int order)
return page_idx ^ (1 << order);
}
+extern struct page *__pageblock_pfn_to_page(unsigned long start_pfn,
+ unsigned long end_pfn, struct zone *zone);
+
+static inline struct page *pageblock_pfn_to_page(unsigned long start_pfn,
+ unsigned long end_pfn, struct zone *zone)
+{
+ if (zone->contiguous)
+ return pfn_to_page(start_pfn);
+
+ return __pageblock_pfn_to_page(start_pfn, end_pfn, zone);
+}
+
extern int __isolate_free_page(struct page *page, unsigned int order);
extern void __free_pages_bootmem(struct page *page, unsigned long pfn,
unsigned int order);