diff --git a/include/sys/dmu.h b/include/sys/dmu.h
index f252a9cb63c0..61c02e8a7683 100644
--- a/include/sys/dmu.h
+++ b/include/sys/dmu.h
@@ -748,11 +748,16 @@ void dmu_tx_mark_netfree(dmu_tx_t *tx);
  * to stable storage and will also be called if the dmu_tx is aborted.
  * If there is any error which prevents the transaction from being committed to
  * disk, the callback will be called with a value of error != 0.
+ *
+ * When multiple callbacks are registered to the transaction, the callbacks
+ * will be called in reverse order to let Lustre, the only user of commit
+ * callback currently, take the fast path of its commit callback handling.
  */
 typedef void dmu_tx_callback_func_t(void *dcb_data, int error);
 
 void dmu_tx_callback_register(dmu_tx_t *tx, dmu_tx_callback_func_t *dcb_func,
     void *dcb_data);
+void dmu_tx_do_callbacks(list_t *cb_list, int error);
 
 /*
  * Free up the data blocks for a defined range of a file.  If size is
diff --git a/include/sys/dmu_tx.h b/include/sys/dmu_tx.h
index f16e1e858041..d82a79310db6 100644
--- a/include/sys/dmu_tx.h
+++ b/include/sys/dmu_tx.h
@@ -145,10 +145,6 @@ uint64_t dmu_tx_get_txg(dmu_tx_t *tx);
 struct dsl_pool *dmu_tx_pool(dmu_tx_t *tx);
 void dmu_tx_wait(dmu_tx_t *tx);
 
-void dmu_tx_callback_register(dmu_tx_t *tx, dmu_tx_callback_func_t *dcb_func,
-    void *dcb_data);
-void dmu_tx_do_callbacks(list_t *cb_list, int error);
-
 /*
  * These routines are defined in dmu_spa.h, and are called by the SPA.
  */
diff --git a/module/zfs/dmu_tx.c b/module/zfs/dmu_tx.c
index 2bb2026478ba..6408837d2adc 100644
--- a/module/zfs/dmu_tx.c
+++ b/module/zfs/dmu_tx.c
@@ -1197,7 +1197,7 @@ dmu_tx_do_callbacks(list_t *cb_list, int error)
 {
 	dmu_tx_callback_t *dcb;
 
-	while ((dcb = list_head(cb_list)) != NULL) {
+	while ((dcb = list_tail(cb_list)) != NULL) {
 		list_remove(cb_list, dcb);
 		dcb->dcb_func(dcb->dcb_data, error);
 		kmem_free(dcb, sizeof (dmu_tx_callback_t));