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-rw-r--r--include/linux/mm_types.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index d3f5492a2611..a43a74a67d50 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -212,6 +212,11 @@ struct page {
#endif
} _struct_page_alignment;
+static inline atomic_t *compound_mapcount_ptr(struct page *page)
+{
+ return &page[1].compound_mapcount;
+}
+
/*
* Used for sizing the vmemmap region on some architectures
*/