diff --git a/storage/innobase/include/trx0trx.h b/storage/innobase/include/trx0trx.h
index b97cf6f1f3e..9d1c574e04d 100644
--- a/storage/innobase/include/trx0trx.h
+++ b/storage/innobase/include/trx0trx.h
@@ -328,16 +328,6 @@ is estimated as the number of altered rows + the number of locked rows.
 @return transaction weight */
 #define TRX_WEIGHT(t)	((t)->undo_no + UT_LIST_GET_LEN((t)->lock.trx_locks))
 
-/*******************************************************************//**
-Compares the "weight" (or size) of two transactions. Transactions that
-have edited non-transactional tables are considered heavier than ones
-that have not.
-@return true if weight(a) >= weight(b) */
-bool
-trx_weight_ge(
-/*==========*/
-	const trx_t*	a,	/*!< in: the transaction to be compared */
-	const trx_t*	b);	/*!< in: the transaction to be compared */
 /* Maximum length of a string that can be returned by
 trx_get_que_state_str(). */
 #define TRX_QUE_STATE_STR_MAX_LEN	12 /* "ROLLING BACK" */
diff --git a/storage/innobase/lock/lock0lock.cc b/storage/innobase/lock/lock0lock.cc
index 1eaa562329f..97f1a670c6c 100644
--- a/storage/innobase/lock/lock0lock.cc
+++ b/storage/innobase/lock/lock0lock.cc
@@ -6093,6 +6093,17 @@ DeadlockChecker::notify(const lock_t* lock) const
 	DBUG_PRINT("ib_lock", ("deadlock detected"));
 }
 
+/** Compare the "weight" (or size) of two transactions. Transactions that
+have edited non-transactional tables are considered heavier than ones
+that have not.
+@return whether a is heavier than b */
+inline bool trx_weight_ge(const trx_t *a, const trx_t *b)
+{
+  bool a_notrans= a->mysql_thd && thd_has_edited_nontrans_tables(a->mysql_thd);
+  bool b_notrans= b->mysql_thd && thd_has_edited_nontrans_tables(b->mysql_thd);
+  return a_notrans != b_notrans ? a_notrans : TRX_WEIGHT(a) >= TRX_WEIGHT(b);
+}
+
 /** Select the victim transaction that should be rolledback.
 @return victim transaction */
 const trx_t*
diff --git a/storage/innobase/trx/trx0trx.cc b/storage/innobase/trx/trx0trx.cc
index fb535991210..1d4452041c3 100644
--- a/storage/innobase/trx/trx0trx.cc
+++ b/storage/innobase/trx/trx0trx.cc
@@ -1902,41 +1902,6 @@ trx_print(
 		      n_rec_locks, n_trx_locks, heap_size);
 }
 
-/*******************************************************************//**
-Compares the "weight" (or size) of two transactions. Transactions that
-have edited non-transactional tables are considered heavier than ones
-that have not.
-@return TRUE if weight(a) >= weight(b) */
-bool
-trx_weight_ge(
-/*==========*/
-	const trx_t*	a,	/*!< in: transaction to be compared */
-	const trx_t*	b)	/*!< in: transaction to be compared */
-{
-	ibool	a_notrans_edit;
-	ibool	b_notrans_edit;
-
-	/* If mysql_thd is NULL for a transaction we assume that it has
-	not edited non-transactional tables. */
-
-	a_notrans_edit = a->mysql_thd != NULL
-		&& thd_has_edited_nontrans_tables(a->mysql_thd);
-
-	b_notrans_edit = b->mysql_thd != NULL
-		&& thd_has_edited_nontrans_tables(b->mysql_thd);
-
-	if (a_notrans_edit != b_notrans_edit) {
-
-		return(a_notrans_edit);
-	}
-
-	/* Either both had edited non-transactional tables or both had
-	not, we fall back to comparing the number of altered/locked
-	rows. */
-
-	return(TRX_WEIGHT(a) >= TRX_WEIGHT(b));
-}
-
 /** Prepare a transaction.
 @return	log sequence number that makes the XA PREPARE durable
 @retval	0	if no changes needed to be made durable */