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-rw-r--r--include/linux/huge_mm.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 9521cfdf18ca..9b33ac774fdd 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -462,4 +462,15 @@ static inline bool thp_migration_supported(void)
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+/**
+ * thp_size - Size of a transparent huge page.
+ * @page: Head page of a transparent huge page.
+ *
+ * Return: Number of bytes in this page.
+ */
+static inline unsigned long thp_size(struct page *page)
+{
+ return PAGE_SIZE << thp_order(page);
+}
+
#endif /* _LINUX_HUGE_MM_H */