diff --git a/[refs] b/[refs]
index 959a5d8fca7e..0dcc3f6374c3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b616844310a6c8a4ab405d3436bbb6e53cfd852f
+refs/heads/master: 198868f35de99e7197829314076e5465c37e4cc5
diff --git a/trunk/fs/ext4/super.c b/trunk/fs/ext4/super.c
index 9eaec22aa088..b357c2700d72 100644
--- a/trunk/fs/ext4/super.c
+++ b/trunk/fs/ext4/super.c
@@ -3514,7 +3514,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 	percpu_counter_set(&sbi->s_dirtyblocks_counter, 0);
 
 no_journal:
-	EXT4_SB(sb)->dio_unwritten_wq = create_workqueue("ext4-dio-unwritten");
+	EXT4_SB(sb)->dio_unwritten_wq = create_singlethread_workqueue("ext4-dio-unwritten");
 	if (!EXT4_SB(sb)->dio_unwritten_wq) {
 		printk(KERN_ERR "EXT4-fs: failed to create DIO workqueue\n");
 		goto failed_mount_wq;