1 files changed, 16 insertions, 0 deletions
diff --git a/storage/xtradb/include/data0type.ic b/storage/xtradb/include/data0type.ic
index d489bef89a8..29dc480a19c 100644
--- a/storage/xtradb/include/data0type.ic
+++ b/storage/xtradb/include/data0type.ic
@@ -26,6 +26,7 @@ Created 1/16/1996 Heikki Tuuri
 #include <string.h> /* strlen() */
 
 #include "mach0data.h"
+#include "rem0types.h" /* ZIP_COLUMN_HEADER_LENGTH */
 #ifndef UNIV_HOTBACKUP
 # include "ha_prototypes.h"
 
@@ -709,3 +710,18 @@ dtype_get_sql_null_size(
 					0, 0));
 #endif /* !UNIV_HOTBACKUP */
 }
+
+/**
+Calculates the number of extra bytes needed for compression header
+depending on precise column type.
+@reval 0 if prtype does not include DATA_COMPRESSED flag
+@reval ZIP_COLUMN_HEADER_LENGTH if prtype includes DATA_COMPRESSED flag
+*/
+UNIV_INLINE
+ulint
+prtype_get_compression_extra(
+	ulint		prtype)	/*!< in: precise type */
+{
+	return (prtype & DATA_COMPRESSED) != 0 ?
+		ZIP_COLUMN_HEADER_LENGTH : 0;
+}