diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 183ae3447f6..3d4fb81bacd 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2220,7 +2220,9 @@ static void ext4_orphan_cleanup(struct super_block *sb,
 				__func__, inode->i_ino, inode->i_size);
 			jbd_debug(2, "truncating inode %lu to %lld bytes\n",
 				  inode->i_ino, inode->i_size);
+			mutex_lock(&inode->i_mutex);
 			ext4_truncate(inode);
+			mutex_unlock(&inode->i_mutex);
 			nr_truncates++;
 		} else {
 			ext4_msg(sb, KERN_DEBUG,