diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 30e1d7fedb5f..eec8e2f7537e 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -3281,6 +3281,30 @@ static void kfree_rcu_work(struct work_struct *work)
 	}
 }
 
+static bool
+need_offload_krc(struct kfree_rcu_cpu *krcp)
+{
+	int i;
+
+	for (i = 0; i < FREE_N_CHANNELS; i++)
+		if (krcp->bkvhead[i])
+			return true;
+
+	return !!krcp->head;
+}
+
+static bool
+need_wait_for_krwp_work(struct kfree_rcu_cpu_work *krwp)
+{
+	int i;
+
+	for (i = 0; i < FREE_N_CHANNELS; i++)
+		if (krwp->bkvhead_free[i])
+			return true;
+
+	return !!krwp->head_free;
+}
+
 /*
  * Schedule the kfree batch RCU work to run in workqueue context after a GP.
  *
@@ -3298,16 +3322,13 @@ static inline bool queue_kfree_rcu_work(struct kfree_rcu_cpu *krcp)
 	for (i = 0; i < KFREE_N_BATCHES; i++) {
 		krwp = &(krcp->krw_arr[i]);
 
-		/*
-		 * Try to detach bkvhead or head and attach it over any
-		 * available corresponding free channel. It can be that
-		 * a previous RCU batch is in progress, it means that
-		 * immediately to queue another one is not possible so
-		 * return false to tell caller to retry.
-		 */
-		if ((krcp->bkvhead[0] && !krwp->bkvhead_free[0]) ||
-			(krcp->bkvhead[1] && !krwp->bkvhead_free[1]) ||
-				(krcp->head && !krwp->head_free)) {
+		// Try to detach bulk_head or head and attach it, only when
+		// all channels are free.  Any channel is not free means at krwp
+		// there is on-going rcu work to handle krwp's free business.
+		if (need_wait_for_krwp_work(krwp))
+			continue;
+
+		if (need_offload_krc(krcp)) {
 			// Channel 1 corresponds to SLAB ptrs.
 			// Channel 2 corresponds to vmalloc ptrs.
 			for (j = 0; j < FREE_N_CHANNELS; j++) {
@@ -3334,12 +3355,12 @@ static inline bool queue_kfree_rcu_work(struct kfree_rcu_cpu *krcp)
 			 */
 			queue_rcu_work(system_wq, &krwp->rcu_work);
 		}
-
-		// Repeat if any "free" corresponding channel is still busy.
-		if (krcp->bkvhead[0] || krcp->bkvhead[1] || krcp->head)
-			repeat = true;
 	}
 
+	// Repeat if any "free" corresponding channel is still busy.
+	if (need_offload_krc(krcp))
+		repeat = true;
+
 	return !repeat;
 }