--- zzzz-none-000/linux-3.10.107/fs/ocfs2/dlm/dlmconvert.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/ocfs2/dlm/dlmconvert.c	2021-02-04 17:41:59.000000000 +0000
@@ -123,7 +123,6 @@
 					   int *kick_thread)
 {
 	enum dlm_status status = DLM_NORMAL;
-	struct list_head *iter;
 	struct dlm_lock *tmplock=NULL;
 
 	assert_spin_locked(&res->spinlock);
@@ -185,16 +184,14 @@
 
 	/* upconvert from here on */
 	status = DLM_NORMAL;
-	list_for_each(iter, &res->granted) {
-		tmplock = list_entry(iter, struct dlm_lock, list);
+	list_for_each_entry(tmplock, &res->granted, list) {
 		if (tmplock == lock)
 			continue;
 		if (!dlm_lock_compatible(tmplock->ml.type, type))
 			goto switch_queues;
 	}
 
-	list_for_each(iter, &res->converting) {
-		tmplock = list_entry(iter, struct dlm_lock, list);
+	list_for_each_entry(tmplock, &res->converting, list) {
 		if (!dlm_lock_compatible(tmplock->ml.type, type))
 			goto switch_queues;
 		/* existing conversion requests take precedence */
@@ -446,8 +443,8 @@
 	struct dlm_ctxt *dlm = data;
 	struct dlm_convert_lock *cnv = (struct dlm_convert_lock *)msg->buf;
 	struct dlm_lock_resource *res = NULL;
-	struct list_head *iter;
 	struct dlm_lock *lock = NULL;
+	struct dlm_lock *tmp_lock;
 	struct dlm_lockstatus *lksb;
 	enum dlm_status status = DLM_NORMAL;
 	u32 flags;
@@ -493,14 +490,13 @@
 		dlm_error(status);
 		goto leave;
 	}
-	list_for_each(iter, &res->granted) {
-		lock = list_entry(iter, struct dlm_lock, list);
-		if (lock->ml.cookie == cnv->cookie &&
-		    lock->ml.node == cnv->node_idx) {
+	list_for_each_entry(tmp_lock, &res->granted, list) {
+		if (tmp_lock->ml.cookie == cnv->cookie &&
+		    tmp_lock->ml.node == cnv->node_idx) {
+			lock = tmp_lock;
 			dlm_lock_get(lock);
 			break;
 		}
-		lock = NULL;
 	}
 	spin_unlock(&res->spinlock);
 	if (!lock) {