diff --git a/fs/locks.c b/fs/locks.c
index d83fab1..43c0af2 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1801,17 +1801,21 @@
 	if (error)
 		goto out;
 
-	for (;;) {
-		error = vfs_lock_file(filp, cmd, file_lock, NULL);
-		if (error != -EAGAIN || cmd == F_SETLK)
-			break;
-		error = wait_event_interruptible(file_lock->fl_wait,
-				!file_lock->fl_next);
-		if (!error)
-			continue;
+	if (filp->f_op && filp->f_op->lock != NULL)
+		error = filp->f_op->lock(filp, cmd, file_lock);
+	else {
+		for (;;) {
+			error = posix_lock_file(filp, file_lock, NULL);
+			if (error != -EAGAIN || cmd == F_SETLK)
+				break;
+			error = wait_event_interruptible(file_lock->fl_wait,
+					!file_lock->fl_next);
+			if (!error)
+				continue;
 
-		locks_delete_block(file_lock);
-		break;
+			locks_delete_block(file_lock);
+			break;
+		}
 	}
 
 	/*
@@ -1925,17 +1929,21 @@
 	if (error)
 		goto out;
 
-	for (;;) {
-		error = vfs_lock_file(filp, cmd, file_lock, NULL);
-		if (error != -EAGAIN || cmd == F_SETLK64)
-			break;
-		error = wait_event_interruptible(file_lock->fl_wait,
-				!file_lock->fl_next);
-		if (!error)
-			continue;
+	if (filp->f_op && filp->f_op->lock != NULL)
+		error = filp->f_op->lock(filp, cmd, file_lock);
+	else {
+		for (;;) {
+			error = posix_lock_file(filp, file_lock, NULL);
+			if (error != -EAGAIN || cmd == F_SETLK64)
+				break;
+			error = wait_event_interruptible(file_lock->fl_wait,
+					!file_lock->fl_next);
+			if (!error)
+				continue;
 
-		locks_delete_block(file_lock);
-		break;
+			locks_delete_block(file_lock);
+			break;
+		}
 	}
 
 	/*