From 438683c0a9c9a045106f27aca85dc1855d926497 Mon Sep 17 00:00:00 2001
From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Mon, 21 Jun 2010 10:19:44 -0700
Subject: [PATCH] Revert "Support TQ_FRONT flag used by taskq_dispatch()"

This reverts commit eb12b3782c94113d2d40d2da22265dc4111a672b.
---
 include/sys/taskq.h    | 2 --
 module/spl/spl-taskq.c | 8 +-------
 2 files changed, 1 insertion(+), 9 deletions(-)

diff --git a/include/sys/taskq.h b/include/sys/taskq.h
index 4e51d98dd..baa96eaa0 100644
--- a/include/sys/taskq.h
+++ b/include/sys/taskq.h
@@ -39,7 +39,6 @@
 #define TASKQ_CPR_SAFE          0x00000002
 #define TASKQ_DYNAMIC           0x00000004
 #define TASKQ_THREADS_CPU_PCT   0x00000008
-#define TASKQ_DC_BATCH          0x00000010
 
 typedef unsigned long taskqid_t;
 typedef void (task_func_t)(void *);
@@ -54,7 +53,6 @@ typedef void (task_func_t)(void *);
 #define TQ_NOQUEUE              0x01000000
 #define TQ_NOALLOC              0x02000000
 #define TQ_NEW                  0x04000000
-#define TQ_FRONT                0x08000000
 #define TQ_ACTIVE               0x80000000
 
 typedef struct taskq {
diff --git a/module/spl/spl-taskq.c b/module/spl/spl-taskq.c
index fba38021f..805749a14 100644
--- a/module/spl/spl-taskq.c
+++ b/module/spl/spl-taskq.c
@@ -274,13 +274,7 @@ __taskq_dispatch(taskq_t *tq, task_func_t func, void *arg, uint_t flags)
 		GOTO(out, rc = 0);
 
 	spin_lock(&t->t_lock);
-
-	/* Queue to the head instead of the tail */
-	if (flags & TQ_FRONT)
-		list_add(&t->t_list, &tq->tq_pend_list);
-	else
-		list_add_tail(&t->t_list, &tq->tq_pend_list);
-
+	list_add_tail(&t->t_list, &tq->tq_pend_list);
 	t->t_id = rc = tq->tq_next_id;
 	tq->tq_next_id++;
         t->t_func = func;