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-rw-r--r--include/linux/mm.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 695b90437bb..4670ebd1f62 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -286,6 +286,12 @@ static inline void get_page(struct page *page)
atomic_inc(&page->_count);
}
+static inline struct page *virt_to_head_page(const void *x)
+{
+ struct page *page = virt_to_page(x);
+ return compound_head(page);
+}
+
/*
* Setup the page count before being freed into the page allocator for
* the first time (boot or memory hotplug)