Merge branch 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

* 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: fix build failure introduced by s/freezeable/freezable/
  workqueue: add system_freezeable_wq
  rds/ib: use system_wq instead of rds_ib_fmr_wq
  net/9p: replace p9_poll_task with a work
  net/9p: use system_wq instead of p9_mux_wq
  xfs: convert to alloc_workqueue()
  reiserfs: make commit_wq use the default concurrency level
  ocfs2: use system_wq instead of ocfs2_quota_wq
  ext4: convert to alloc_workqueue()
  scsi/scsi_tgt_lib: scsi_tgtd isn't used in memory reclaim path
  scsi/be2iscsi,qla2xxx: convert to alloc_workqueue()
  misc/iwmc3200top: use system_wq instead of dedicated workqueues
  i2o: use alloc_workqueue() instead of create_workqueue()
  acpi: kacpi*_wq don't need WQ_MEM_RECLAIM
  fs/aio: aio_wq isn't used in memory reclaim path
  input/tps6507x-ts: use system_wq instead of dedicated workqueue
  cpufreq: use system_wq instead of dedicated workqueues
  wireless/ipw2x00: use system_wq instead of dedicated workqueues
  arm/omap: use system_wq in mailbox
  workqueue: use WQ_MEM_RECLAIM instead of WQ_RESCUER

arch/arm/plat-omap/mailbox.c

@@ -32,7 +32,6 @@
 
 #include <plat/mailbox.h>
 
-static struct workqueue_struct *mboxd;
 static struct omap_mbox **mboxes;
 
 static int mbox_configured;
@@ -197,7 +196,7 @@ static void __mbox_rx_interrupt(struct omap_mbox *mbox)
 	/* no more messages in the fifo. clear IRQ source. */
 	ack_mbox_irq(mbox, IRQ_RX);
 nomem:
-	queue_work(mboxd, &mbox->rxq->work);
+	schedule_work(&mbox->rxq->work);
 }
 
 static irqreturn_t mbox_interrupt(int irq, void *p)
@@ -307,7 +306,7 @@ static void omap_mbox_fini(struct omap_mbox *mbox)
 	if (!--mbox->use_count) {
 		free_irq(mbox->irq, mbox);
 		tasklet_kill(&mbox->txq->tasklet);
-		flush_work(&mbox->rxq->work);
+	flush_work_sync(&mbox->rxq->work);
 		mbox_queue_free(mbox->txq);
 		mbox_queue_free(mbox->rxq);
 	}
@@ -409,10 +408,6 @@ static int __init omap_mbox_init(void)
 	if (err)
 		return err;
 
-	mboxd = create_workqueue("mboxd");
-	if (!mboxd)
-		return -ENOMEM;
-
 	/* kfifo size sanity check: alignment and minimal size */
 	mbox_kfifo_size = ALIGN(mbox_kfifo_size, sizeof(mbox_msg_t));
 	mbox_kfifo_size = max_t(unsigned int, mbox_kfifo_size,
@@ -424,7 +419,6 @@ subsys_initcall(omap_mbox_init);
 
 static void __exit omap_mbox_exit(void)
 {
-	destroy_workqueue(mboxd);
 	class_unregister(&omap_mbox_class);
 }
 module_exit(omap_mbox_exit);

drivers/acpi/osl.c

@@ -1589,9 +1589,9 @@ acpi_status __init acpi_os_initialize(void)
 
 acpi_status __init acpi_os_initialize1(void)
 {
-	kacpid_wq = create_workqueue("kacpid");
+	kacpid_wq = alloc_workqueue("kacpid", 0, 1);
-	kacpi_notify_wq = create_workqueue("kacpi_notify");
+	kacpi_notify_wq = alloc_workqueue("kacpi_notify", 0, 1);
-	kacpi_hotplug_wq = create_workqueue("kacpi_hotplug");
+	kacpi_hotplug_wq = alloc_workqueue("kacpi_hotplug", 0, 1);
 	BUG_ON(!kacpid_wq);
 	BUG_ON(!kacpi_notify_wq);
 	BUG_ON(!kacpi_hotplug_wq);

drivers/cpufreq/cpufreq_conservative.c

@@ -81,8 +81,6 @@ static unsigned int dbs_enable;	/* number of CPUs using this policy */
  */
 static DEFINE_MUTEX(dbs_mutex);
 
-static struct workqueue_struct	*kconservative_wq;
-
 static struct dbs_tuners {
 	unsigned int sampling_rate;
 	unsigned int sampling_down_factor;
@@ -560,7 +558,7 @@ static void do_dbs_timer(struct work_struct *work)
 
 	dbs_check_cpu(dbs_info);
 
-	queue_delayed_work_on(cpu, kconservative_wq, &dbs_info->work, delay);
+	schedule_delayed_work_on(cpu, &dbs_info->work, delay);
 	mutex_unlock(&dbs_info->timer_mutex);
 }
 
@@ -572,8 +570,7 @@ static inline void dbs_timer_init(struct cpu_dbs_info_s *dbs_info)
 
 	dbs_info->enable = 1;
 	INIT_DELAYED_WORK_DEFERRABLE(&dbs_info->work, do_dbs_timer);
-	queue_delayed_work_on(dbs_info->cpu, kconservative_wq, &dbs_info->work,
+	schedule_delayed_work_on(dbs_info->cpu, &dbs_info->work, delay);
-				delay);
 }
 
 static inline void dbs_timer_exit(struct cpu_dbs_info_s *dbs_info)
@@ -716,25 +713,12 @@ struct cpufreq_governor cpufreq_gov_conservative = {
 
 static int __init cpufreq_gov_dbs_init(void)
 {
-	int err;
+	return cpufreq_register_governor(&cpufreq_gov_conservative);
-
-	kconservative_wq = create_workqueue("kconservative");
-	if (!kconservative_wq) {
-		printk(KERN_ERR "Creation of kconservative failed\n");
-		return -EFAULT;
-	}
-
-	err = cpufreq_register_governor(&cpufreq_gov_conservative);
-	if (err)
-		destroy_workqueue(kconservative_wq);
-
-	return err;
 }
 
 static void __exit cpufreq_gov_dbs_exit(void)
 {
 	cpufreq_unregister_governor(&cpufreq_gov_conservative);
-	destroy_workqueue(kconservative_wq);
 }
 
 

drivers/cpufreq/cpufreq_ondemand.c

@@ -104,8 +104,6 @@ static unsigned int dbs_enable;	/* number of CPUs using this policy */
  */
 static DEFINE_MUTEX(dbs_mutex);
 
-static struct workqueue_struct	*kondemand_wq;
-
 static struct dbs_tuners {
 	unsigned int sampling_rate;
 	unsigned int up_threshold;
@@ -667,7 +665,7 @@ static void do_dbs_timer(struct work_struct *work)
 		__cpufreq_driver_target(dbs_info->cur_policy,
 			dbs_info->freq_lo, CPUFREQ_RELATION_H);
 	}
-	queue_delayed_work_on(cpu, kondemand_wq, &dbs_info->work, delay);
+	schedule_delayed_work_on(cpu, &dbs_info->work, delay);
 	mutex_unlock(&dbs_info->timer_mutex);
 }
 
@@ -681,8 +679,7 @@ static inline void dbs_timer_init(struct cpu_dbs_info_s *dbs_info)
 
 	dbs_info->sample_type = DBS_NORMAL_SAMPLE;
 	INIT_DELAYED_WORK_DEFERRABLE(&dbs_info->work, do_dbs_timer);
-	queue_delayed_work_on(dbs_info->cpu, kondemand_wq, &dbs_info->work,
+	schedule_delayed_work_on(dbs_info->cpu, &dbs_info->work, delay);
-		delay);
 }
 
 static inline void dbs_timer_exit(struct cpu_dbs_info_s *dbs_info)
@@ -814,7 +811,6 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 
 static int __init cpufreq_gov_dbs_init(void)
 {
-	int err;
 	cputime64_t wall;
 	u64 idle_time;
 	int cpu = get_cpu();
@@ -838,22 +834,12 @@ static int __init cpufreq_gov_dbs_init(void)
 			MIN_SAMPLING_RATE_RATIO * jiffies_to_usecs(10);
 	}
 
-	kondemand_wq = create_workqueue("kondemand");
+	return cpufreq_register_governor(&cpufreq_gov_ondemand);
-	if (!kondemand_wq) {
-		printk(KERN_ERR "Creation of kondemand failed\n");
-		return -EFAULT;
-	}
-	err = cpufreq_register_governor(&cpufreq_gov_ondemand);
-	if (err)
-		destroy_workqueue(kondemand_wq);
-
-	return err;
 }
 
 static void __exit cpufreq_gov_dbs_exit(void)
 {
 	cpufreq_unregister_governor(&cpufreq_gov_ondemand);
-	destroy_workqueue(kondemand_wq);
 }
 
 

drivers/input/touchscreen/tps6507x-ts.c

@@ -43,7 +43,6 @@ struct tps6507x_ts {
 	struct input_dev	*input_dev;
 	struct device		*dev;
 	char			phys[32];
-	struct workqueue_struct *wq;
 	struct delayed_work	work;
 	unsigned		polling;	/* polling is active */
 	struct ts_event		tc;
@@ -220,8 +219,8 @@ done:
 	poll = 1;
 
 	if (poll) {
-		schd = queue_delayed_work(tsc->wq, &tsc->work,
+		schd = schedule_delayed_work(&tsc->work,
-					  msecs_to_jiffies(tsc->poll_period));
+					msecs_to_jiffies(tsc->poll_period));
 		if (schd)
 			tsc->polling = 1;
 		else {
@@ -303,7 +302,6 @@ static int tps6507x_ts_probe(struct platform_device *pdev)
 	tsc->input_dev = input_dev;
 
 	INIT_DELAYED_WORK(&tsc->work, tps6507x_ts_handler);
-	tsc->wq = create_workqueue("TPS6507x Touchscreen");
 
 	if (init_data) {
 		tsc->poll_period = init_data->poll_period;
@@ -325,8 +323,8 @@ static int tps6507x_ts_probe(struct platform_device *pdev)
 	if (error)
 		goto err2;
 
-	schd = queue_delayed_work(tsc->wq, &tsc->work,
+	schd = schedule_delayed_work(&tsc->work,
-				  msecs_to_jiffies(tsc->poll_period));
+				     msecs_to_jiffies(tsc->poll_period));
 
 	if (schd)
 		tsc->polling = 1;
@@ -341,7 +339,6 @@ static int tps6507x_ts_probe(struct platform_device *pdev)
 
 err2:
 	cancel_delayed_work_sync(&tsc->work);
-	destroy_workqueue(tsc->wq);
 	input_free_device(input_dev);
 err1:
 	kfree(tsc);
@@ -357,7 +354,6 @@ static int __devexit tps6507x_ts_remove(struct platform_device *pdev)
 	struct input_dev *input_dev = tsc->input_dev;
 
 	cancel_delayed_work_sync(&tsc->work);
-	destroy_workqueue(tsc->wq);
 
 	input_unregister_device(input_dev);
 

drivers/md/md.c

@@ -7361,7 +7361,7 @@ static int __init md_init(void)
 {
 	int ret = -ENOMEM;
 
-	md_wq = alloc_workqueue("md", WQ_RESCUER, 0);
+	md_wq = alloc_workqueue("md", WQ_MEM_RECLAIM, 0);
 	if (!md_wq)
 		goto err_wq;
 

drivers/message/i2o/driver.c

@@ -84,7 +84,8 @@ int i2o_driver_register(struct i2o_driver *drv)
 	osm_debug("Register driver %s\n", drv->name);
 
 	if (drv->event) {
-		drv->event_queue = create_workqueue(drv->name);
+		drv->event_queue = alloc_workqueue(drv->name,
+						   WQ_MEM_RECLAIM, 1);
 		if (!drv->event_queue) {
 			osm_err("Could not initialize event queue for driver "
 				"%s\n", drv->name);

drivers/misc/iwmc3200top/iwmc3200top.h

@@ -183,9 +183,7 @@ struct iwmct_priv {
 	u32 barker;
 	struct iwmct_dbg dbg;
 
-	/* drivers work queue */
+	/* drivers work items */
-	struct workqueue_struct *wq;
-	struct workqueue_struct *bus_rescan_wq;
 	struct work_struct bus_rescan_worker;
 	struct work_struct isr_worker;
 

drivers/misc/iwmc3200top/main.c

@@ -89,7 +89,7 @@ static void op_top_message(struct iwmct_priv *priv, struct top_msg *msg)
 	switch (msg->hdr.opcode) {
 	case OP_OPR_ALIVE:
 		LOG_INFO(priv, FW_MSG, "Got ALIVE from device, wake rescan\n");
-		queue_work(priv->bus_rescan_wq, &priv->bus_rescan_worker);
+		schedule_work(&priv->bus_rescan_worker);
 		break;
 	default:
 		LOG_INFO(priv, FW_MSG, "Received msg opcode 0x%X\n",
@@ -360,7 +360,7 @@ static void iwmct_irq(struct sdio_func *func)
 	/* clear the function's interrupt request bit (write 1 to clear) */
 	sdio_writeb(func, 1, IWMC_SDIO_INTR_CLEAR_ADDR, &ret);
 
-	queue_work(priv->wq, &priv->isr_worker);
+	schedule_work(&priv->isr_worker);
 
 	LOG_TRACE(priv, IRQ, "exit iwmct_irq\n");
 
@@ -506,10 +506,6 @@ static int iwmct_probe(struct sdio_func *func,
 	priv->func = func;
 	sdio_set_drvdata(func, priv);
 
-
-	/* create drivers work queue */
-	priv->wq = create_workqueue(DRV_NAME "_wq");
-	priv->bus_rescan_wq = create_workqueue(DRV_NAME "_rescan_wq");
 	INIT_WORK(&priv->bus_rescan_worker, iwmct_rescan_worker);
 	INIT_WORK(&priv->isr_worker, iwmct_irq_read_worker);
 
@@ -604,9 +600,9 @@ static void iwmct_remove(struct sdio_func *func)
 	sdio_release_irq(func);
 	sdio_release_host(func);
 
-	/* Safely destroy osc workqueue */
+	/* Make sure works are finished */
-	destroy_workqueue(priv->bus_rescan_wq);
+	flush_work_sync(&priv->bus_rescan_worker);
-	destroy_workqueue(priv->wq);
+	flush_work_sync(&priv->isr_worker);
 
 	sdio_claim_host(func);
 	sdio_disable_func(func);

drivers/net/wireless/ipw2x00/ipw2100.c

@@ -706,11 +706,10 @@ static void schedule_reset(struct ipw2100_priv *priv)
 		netif_stop_queue(priv->net_dev);
 		priv->status |= STATUS_RESET_PENDING;
 		if (priv->reset_backoff)
-			queue_delayed_work(priv->workqueue, &priv->reset_work,
+			schedule_delayed_work(&priv->reset_work,
-					   priv->reset_backoff * HZ);
+					      priv->reset_backoff * HZ);
 		else
-			queue_delayed_work(priv->workqueue, &priv->reset_work,
+			schedule_delayed_work(&priv->reset_work, 0);
-					   0);
 
 		if (priv->reset_backoff < MAX_RESET_BACKOFF)
 			priv->reset_backoff++;
@@ -1474,7 +1473,7 @@ static int ipw2100_enable_adapter(struct ipw2100_priv *priv)
 
 	if (priv->stop_hang_check) {
 		priv->stop_hang_check = 0;
-		queue_delayed_work(priv->workqueue, &priv->hang_check, HZ / 2);
+		schedule_delayed_work(&priv->hang_check, HZ / 2);
 	}
 
       fail_up:
@@ -1808,8 +1807,8 @@ static int ipw2100_up(struct ipw2100_priv *priv, int deferred)
 
 		if (priv->stop_rf_kill) {
 			priv->stop_rf_kill = 0;
-			queue_delayed_work(priv->workqueue, &priv->rf_kill,
+			schedule_delayed_work(&priv->rf_kill,
-					   round_jiffies_relative(HZ));
+					      round_jiffies_relative(HZ));
 		}
 
 		deferred = 1;
@@ -2086,7 +2085,7 @@ static void isr_indicate_associated(struct ipw2100_priv *priv, u32 status)
 	priv->status |= STATUS_ASSOCIATING;
 	priv->connect_start = get_seconds();
 
-	queue_delayed_work(priv->workqueue, &priv->wx_event_work, HZ / 10);
+	schedule_delayed_work(&priv->wx_event_work, HZ / 10);
 }
 
 static int ipw2100_set_essid(struct ipw2100_priv *priv, char *essid,
@@ -2166,9 +2165,9 @@ static void isr_indicate_association_lost(struct ipw2100_priv *priv, u32 status)
 		return;
 
 	if (priv->status & STATUS_SECURITY_UPDATED)
-		queue_delayed_work(priv->workqueue, &priv->security_work, 0);
+		schedule_delayed_work(&priv->security_work, 0);
 
-	queue_delayed_work(priv->workqueue, &priv->wx_event_work, 0);
+	schedule_delayed_work(&priv->wx_event_work, 0);
 }
 
 static void isr_indicate_rf_kill(struct ipw2100_priv *priv, u32 status)
@@ -2183,8 +2182,7 @@ static void isr_indicate_rf_kill(struct ipw2100_priv *priv, u32 status)
 	/* Make sure the RF Kill check timer is running */
 	priv->stop_rf_kill = 0;
 	cancel_delayed_work(&priv->rf_kill);
-	queue_delayed_work(priv->workqueue, &priv->rf_kill,
+	schedule_delayed_work(&priv->rf_kill, round_jiffies_relative(HZ));
-			   round_jiffies_relative(HZ));
 }
 
 static void send_scan_event(void *data)
@@ -2219,13 +2217,12 @@ static void isr_scan_complete(struct ipw2100_priv *priv, u32 status)
 	/* Only userspace-requested scan completion events go out immediately */
 	if (!priv->user_requested_scan) {
 		if (!delayed_work_pending(&priv->scan_event_later))
-			queue_delayed_work(priv->workqueue,
+			schedule_delayed_work(&priv->scan_event_later,
-					&priv->scan_event_later,
+					      round_jiffies_relative(msecs_to_jiffies(4000)));
-					round_jiffies_relative(msecs_to_jiffies(4000)));
 	} else {
 		priv->user_requested_scan = 0;
 		cancel_delayed_work(&priv->scan_event_later);
-		queue_work(priv->workqueue, &priv->scan_event_now);
+		schedule_work(&priv->scan_event_now);
 	}
 }
 
@@ -4329,8 +4326,8 @@ static int ipw_radio_kill_sw(struct ipw2100_priv *priv, int disable_radio)
 			/* Make sure the RF_KILL check timer is running */
 			priv->stop_rf_kill = 0;
 			cancel_delayed_work(&priv->rf_kill);
-			queue_delayed_work(priv->workqueue, &priv->rf_kill,
+			schedule_delayed_work(&priv->rf_kill,
-					   round_jiffies_relative(HZ));
+					      round_jiffies_relative(HZ));
 		} else
 			schedule_reset(priv);
 	}
@@ -4461,20 +4458,17 @@ static void bd_queue_initialize(struct ipw2100_priv *priv,
 	IPW_DEBUG_INFO("exit\n");
 }
 
-static void ipw2100_kill_workqueue(struct ipw2100_priv *priv)
+static void ipw2100_kill_works(struct ipw2100_priv *priv)
 {
-	if (priv->workqueue) {
+	priv->stop_rf_kill = 1;
-		priv->stop_rf_kill = 1;
+	priv->stop_hang_check = 1;
-		priv->stop_hang_check = 1;
+	cancel_delayed_work_sync(&priv->reset_work);
-		cancel_delayed_work(&priv->reset_work);
+	cancel_delayed_work_sync(&priv->security_work);
-		cancel_delayed_work(&priv->security_work);
+	cancel_delayed_work_sync(&priv->wx_event_work);
-		cancel_delayed_work(&priv->wx_event_work);
+	cancel_delayed_work_sync(&priv->hang_check);
-		cancel_delayed_work(&priv->hang_check);
+	cancel_delayed_work_sync(&priv->rf_kill);
-		cancel_delayed_work(&priv->rf_kill);
+	cancel_work_sync(&priv->scan_event_now);
-		cancel_delayed_work(&priv->scan_event_later);
+	cancel_delayed_work_sync(&priv->scan_event_later);
-		destroy_workqueue(priv->workqueue);
-		priv->workqueue = NULL;
-	}
 }
 
 static int ipw2100_tx_allocate(struct ipw2100_priv *priv)
@@ -6046,7 +6040,7 @@ static void ipw2100_hang_check(struct work_struct *work)
 	priv->last_rtc = rtc;
 
 	if (!priv->stop_hang_check)
-		queue_delayed_work(priv->workqueue, &priv->hang_check, HZ / 2);
+		schedule_delayed_work(&priv->hang_check, HZ / 2);
 
 	spin_unlock_irqrestore(&priv->low_lock, flags);
 }
@@ -6062,8 +6056,8 @@ static void ipw2100_rf_kill(struct work_struct *work)
 	if (rf_kill_active(priv)) {
 		IPW_DEBUG_RF_KILL("RF Kill active, rescheduling GPIO check\n");
 		if (!priv->stop_rf_kill)
-			queue_delayed_work(priv->workqueue, &priv->rf_kill,
+			schedule_delayed_work(&priv->rf_kill,
-					   round_jiffies_relative(HZ));
+					      round_jiffies_relative(HZ));
 		goto exit_unlock;
 	}
 
@@ -6209,8 +6203,6 @@ static struct net_device *ipw2100_alloc_device(struct pci_dev *pci_dev,
 	INIT_LIST_HEAD(&priv->fw_pend_list);
 	INIT_STAT(&priv->fw_pend_stat);
 
-	priv->workqueue = create_workqueue(DRV_NAME);
-
 	INIT_DELAYED_WORK(&priv->reset_work, ipw2100_reset_adapter);
 	INIT_DELAYED_WORK(&priv->security_work, ipw2100_security_work);
 	INIT_DELAYED_WORK(&priv->wx_event_work, ipw2100_wx_event_work);
@@ -6410,7 +6402,7 @@ static int ipw2100_pci_init_one(struct pci_dev *pci_dev,
 		if (dev->irq)
 			free_irq(dev->irq, priv);
 
-		ipw2100_kill_workqueue(priv);
+		ipw2100_kill_works(priv);
 
 		/* These are safe to call even if they weren't allocated */
 		ipw2100_queues_free(priv);
@@ -6460,9 +6452,7 @@ static void __devexit ipw2100_pci_remove_one(struct pci_dev *pci_dev)
 		 * first, then close() will crash. */
 		unregister_netdev(dev);
 
-		/* ipw2100_down will ensure that there is no more pending work
+		ipw2100_kill_works(priv);
-		 * in the workqueue's, so we can safely remove them now. */
-		ipw2100_kill_workqueue(priv);
 
 		ipw2100_queues_free(priv);
 

drivers/net/wireless/ipw2x00/ipw2100.h

@@ -580,7 +580,6 @@ struct ipw2100_priv {
 
 	struct tasklet_struct irq_tasklet;
 
-	struct workqueue_struct *workqueue;
 	struct delayed_work reset_work;
 	struct delayed_work security_work;
 	struct delayed_work wx_event_work;

drivers/net/wireless/ipw2x00/ipw2200.c

@@ -894,9 +894,8 @@ static void ipw_led_link_on(struct ipw_priv *priv)
 
 		/* If we aren't associated, schedule turning the LED off */
 		if (!(priv->status & STATUS_ASSOCIATED))
-			queue_delayed_work(priv->workqueue,
+			schedule_delayed_work(&priv->led_link_off,
-					   &priv->led_link_off,
+					      LD_TIME_LINK_ON);
-					   LD_TIME_LINK_ON);
 	}
 
 	spin_unlock_irqrestore(&priv->lock, flags);
@@ -939,8 +938,8 @@ static void ipw_led_link_off(struct ipw_priv *priv)
 		 * turning the LED on (blink while unassociated) */
 		if (!(priv->status & STATUS_RF_KILL_MASK) &&
 		    !(priv->status & STATUS_ASSOCIATED))
-			queue_delayed_work(priv->workqueue, &priv->led_link_on,
+			schedule_delayed_work(&priv->led_link_on,
-					   LD_TIME_LINK_OFF);
+					      LD_TIME_LINK_OFF);
 
 	}
 
@@ -980,13 +979,11 @@ static void __ipw_led_activity_on(struct ipw_priv *priv)
 		priv->status |= STATUS_LED_ACT_ON;
 
 		cancel_delayed_work(&priv->led_act_off);
-		queue_delayed_work(priv->workqueue, &priv->led_act_off,
+		schedule_delayed_work(&priv->led_act_off, LD_TIME_ACT_ON);
-				   LD_TIME_ACT_ON);
 	} else {
 		/* Reschedule LED off for full time period */
 		cancel_delayed_work(&priv->led_act_off);
-		queue_delayed_work(priv->workqueue, &priv->led_act_off,
+		schedule_delayed_work(&priv->led_act_off, LD_TIME_ACT_ON);
-				   LD_TIME_ACT_ON);
 	}
 }
 
@@ -1795,13 +1792,11 @@ static int ipw_radio_kill_sw(struct ipw_priv *priv, int disable_radio)
 	if (disable_radio) {
 		priv->status |= STATUS_RF_KILL_SW;
 
-		if (priv->workqueue) {
+		cancel_delayed_work(&priv->request_scan);
-			cancel_delayed_work(&priv->request_scan);
+		cancel_delayed_work(&priv->request_direct_scan);
-			cancel_delayed_work(&priv->request_direct_scan);
+		cancel_delayed_work(&priv->request_passive_scan);
-			cancel_delayed_work(&priv->request_passive_scan);
+		cancel_delayed_work(&priv->scan_event);
-			cancel_delayed_work(&priv->scan_event);
+		schedule_work(&priv->down);
-		}
-		queue_work(priv->workqueue, &priv->down);
 	} else {
 		priv->status &= ~STATUS_RF_KILL_SW;
 		if (rf_kill_active(priv)) {
@@ -1809,10 +1804,10 @@ static int ipw_radio_kill_sw(struct ipw_priv *priv, int disable_radio)
 					  "disabled by HW switch\n");
 			/* Make sure the RF_KILL check timer is running */
 			cancel_delayed_work(&priv->rf_kill);
-			queue_delayed_work(priv->workqueue, &priv->rf_kill,
+			schedule_delayed_work(&priv->rf_kill,
-					   round_jiffies_relative(2 * HZ));
+					      round_jiffies_relative(2 * HZ));
 		} else
-			queue_work(priv->workqueue, &priv->up);
+			schedule_work(&priv->up);
 	}
 
 	return 1;
@@ -2063,7 +2058,7 @@ static void ipw_irq_tasklet(struct ipw_priv *priv)
 		cancel_delayed_work(&priv->request_passive_scan);
 		cancel_delayed_work(&priv->scan_event);
 		schedule_work(&priv->link_down);
-		queue_delayed_work(priv->workqueue, &priv->rf_kill, 2 * HZ);
+		schedule_delayed_work(&priv->rf_kill, 2 * HZ);
 		handled |= IPW_INTA_BIT_RF_KILL_DONE;
 	}
 
@@ -2103,7 +2098,7 @@ static void ipw_irq_tasklet(struct ipw_priv *priv)
 		priv->status &= ~STATUS_HCMD_ACTIVE;
 		wake_up_interruptible(&priv->wait_command_queue);
 
-		queue_work(priv->workqueue, &priv->adapter_restart);
+		schedule_work(&priv->adapter_restart);
 		handled |= IPW_INTA_BIT_FATAL_ERROR;
 	}
 
@@ -2323,11 +2318,6 @@ static int ipw_send_adapter_address(struct ipw_priv *priv, u8 * mac)
 	return ipw_send_cmd_pdu(priv, IPW_CMD_ADAPTER_ADDRESS, ETH_ALEN, mac);
 }
 
-/*
- * NOTE: This must be executed from our workqueue as it results in udelay
- * being called which may corrupt the keyboard if executed on default
- * workqueue
- */
 static void ipw_adapter_restart(void *adapter)
 {
 	struct ipw_priv *priv = adapter;
@@ -2368,13 +2358,13 @@ static void ipw_scan_check(void *data)
 		IPW_DEBUG_SCAN("Scan completion watchdog resetting "
 			       "adapter after (%dms).\n",
 			       jiffies_to_msecs(IPW_SCAN_CHECK_WATCHDOG));
-		queue_work(priv->workqueue, &priv->adapter_restart);
+		schedule_work(&priv->adapter_restart);
 	} else if (priv->status & STATUS_SCANNING) {
 		IPW_DEBUG_SCAN("Scan completion watchdog aborting scan "
 			       "after (%dms).\n",
 			       jiffies_to_msecs(IPW_SCAN_CHECK_WATCHDOG));
 		ipw_abort_scan(priv);
-		queue_delayed_work(priv->workqueue, &priv->scan_check, HZ);
+		schedule_delayed_work(&priv->scan_check, HZ);
 	}
 }
 
@@ -3943,7 +3933,7 @@ static void ipw_send_disassociate(struct ipw_priv *priv, int quiet)
 
 	if (priv->status & STATUS_ASSOCIATING) {
 		IPW_DEBUG_ASSOC("Disassociating while associating.\n");
-		queue_work(priv->workqueue, &priv->disassociate);
+		schedule_work(&priv->disassociate);
 		return;
 	}
 
@@ -4360,8 +4350,7 @@ static void ipw_gather_stats(struct ipw_priv *priv)
 
 	priv->quality = quality;
 
-	queue_delayed_work(priv->workqueue, &priv->gather_stats,
+	schedule_delayed_work(&priv->gather_stats, IPW_STATS_INTERVAL);
-			   IPW_STATS_INTERVAL);
 }
 
 static void ipw_bg_gather_stats(struct work_struct *work)
@@ -4396,10 +4385,10 @@ static void ipw_handle_missed_beacon(struct ipw_priv *priv,
 			IPW_DEBUG(IPW_DL_INFO | IPW_DL_NOTIF |
 				  IPW_DL_STATE,
 				  "Aborting scan with missed beacon.\n");
-			queue_work(priv->workqueue, &priv->abort_scan);
+			schedule_work(&priv->abort_scan);
 		}
 
-		queue_work(priv->workqueue, &priv->disassociate);
+		schedule_work(&priv->disassociate);
 		return;
 	}
 
@@ -4425,8 +4414,7 @@ static void ipw_handle_missed_beacon(struct ipw_priv *priv,
 		if (!(priv->status & STATUS_ROAMING)) {
 			priv->status |= STATUS_ROAMING;
 			if (!(priv->status & STATUS_SCANNING))
-				queue_delayed_work(priv->workqueue,
+				schedule_delayed_work(&priv->request_scan, 0);
-						   &priv->request_scan, 0);
 		}
 		return;
 	}
@@ -4439,7 +4427,7 @@ static void ipw_handle_missed_beacon(struct ipw_priv *priv,
 		 * channels..) */
 		IPW_DEBUG(IPW_DL_INFO | IPW_DL_NOTIF | IPW_DL_STATE,
 			  "Aborting scan with missed beacon.\n");
-		queue_work(priv->workqueue, &priv->abort_scan);
+		schedule_work(&priv->abort_scan);
 	}
 
 	IPW_DEBUG_NOTIF("Missed beacon: %d\n", missed_count);
@@ -4462,8 +4450,8 @@ static void handle_scan_event(struct ipw_priv *priv)
 	/* Only userspace-requested scan completion events go out immediately */
 	if (!priv->user_requested_scan) {
 		if (!delayed_work_pending(&priv->scan_event))
-			queue_delayed_work(priv->workqueue, &priv->scan_event,
+			schedule_delayed_work(&priv->scan_event,
-					 round_jiffies_relative(msecs_to_jiffies(4000)));
+					      round_jiffies_relative(msecs_to_jiffies(4000)));
 	} else {
 		union iwreq_data wrqu;
 
@@ -4516,20 +4504,17 @@ static void ipw_rx_notification(struct ipw_priv *priv,
 
 						IPW_DEBUG_ASSOC
 						    ("queueing adhoc check\n");
-						queue_delayed_work(priv->
+						schedule_delayed_work(
-								   workqueue,
+							&priv->adhoc_check,
-								   &priv->
+							le16_to_cpu(priv->
-								   adhoc_check,
+							assoc_request.
-								   le16_to_cpu(priv->
+							beacon_interval));
-								   assoc_request.
-								   beacon_interval));
 						break;
 					}
 
 					priv->status &= ~STATUS_ASSOCIATING;
 					priv->status |= STATUS_ASSOCIATED;
-					queue_work(priv->workqueue,
+					schedule_work(&priv->system_config);
-						   &priv->system_config);
 
 #ifdef CONFIG_IPW2200_QOS
 #define IPW_GET_PACKET_STYPE(x) WLAN_FC_GET_STYPE( \
@@ -4792,43 +4777,37 @@ static void ipw_rx_notification(struct ipw_priv *priv,
 #ifdef CONFIG_IPW2200_MONITOR
 			if (priv->ieee->iw_mode == IW_MODE_MONITOR) {
 				priv->status |= STATUS_SCAN_FORCED;
-				queue_delayed_work(priv->workqueue,
+				schedule_delayed_work(&priv->request_scan, 0);
-						   &priv->request_scan, 0);
 				break;
 			}
 			priv->status &= ~STATUS_SCAN_FORCED;
 #endif				/* CONFIG_IPW2200_MONITOR */
 
 			/* Do queued direct scans first */
-			if (priv->status & STATUS_DIRECT_SCAN_PENDING) {
+			if (priv->status & STATUS_DIRECT_SCAN_PENDING)
-				queue_delayed_work(priv->workqueue,
+				schedule_delayed_work(&priv->request_direct_scan, 0);
-						   &priv->request_direct_scan, 0);
-			}
 
 			if (!(priv->status & (STATUS_ASSOCIATED |
 					      STATUS_ASSOCIATING |
 					      STATUS_ROAMING |
 					      STATUS_DISASSOCIATING)))
-				queue_work(priv->workqueue, &priv->associate);
+				schedule_work(&priv->associate);
 			else if (priv->status & STATUS_ROAMING) {
 				if (x->status == SCAN_COMPLETED_STATUS_COMPLETE)
 					/* If a scan completed and we are in roam mode, then
 					 * the scan that completed was the one requested as a
 					 * result of entering roam... so, schedule the
 					 * roam work */
-					queue_work(priv->workqueue,
+					schedule_work(&priv->roam);
-						   &priv->roam);
 				else
 					/* Don't schedule if we aborted the scan */
 					priv->status &= ~STATUS_ROAMING;
 			} else if (priv->status & STATUS_SCAN_PENDING)
-				queue_delayed_work(priv->workqueue,
+				schedule_delayed_work(&priv->request_scan, 0);
-						   &priv->request_scan, 0);
 			else if (priv->config & CFG_BACKGROUND_SCAN
 				 && priv->status & STATUS_ASSOCIATED)
-				queue_delayed_work(priv->workqueue,
+				schedule_delayed_work(&priv->request_scan,
-						   &priv->request_scan,
+						      round_jiffies_relative(HZ));
-						   round_jiffies_relative(HZ));
 
 			/* Send an empty event to user space.
 			 * We don't send the received data on the event because
@@ -5192,7 +5171,7 @@ static void ipw_rx_queue_restock(struct ipw_priv *priv)
 	/* If the pre-allocated buffer pool is dropping low, schedule to
 	 * refill it */
 	if (rxq->free_count <= RX_LOW_WATERMARK)
-		queue_work(priv->workqueue, &priv->rx_replenish);
+		schedule_work(&priv->rx_replenish);
 
 	/* If we've added more space for the firmware to place data, tell it */
 	if (write != rxq->write)
@@ -6133,8 +6112,8 @@ static void ipw_adhoc_check(void *data)
 		return;
 	}
 
-	queue_delayed_work(priv->workqueue, &priv->adhoc_check,
+	schedule_delayed_work(&priv->adhoc_check,
-			   le16_to_cpu(priv->assoc_request.beacon_interval));
+			      le16_to_cpu(priv->assoc_request.beacon_interval));
 }
 
 static void ipw_bg_adhoc_check(struct work_struct *work)
@@ -6523,8 +6502,7 @@ send_request:
 	} else
 		priv->status &= ~STATUS_SCAN_PENDING;
 
-	queue_delayed_work(priv->workqueue, &priv->scan_check,
+	schedule_delayed_work(&priv->scan_check, IPW_SCAN_CHECK_WATCHDOG);
-			   IPW_SCAN_CHECK_WATCHDOG);
 done:
 	mutex_unlock(&priv->mutex);
 	return err;
@@ -6994,8 +6972,7 @@ static int ipw_qos_handle_probe_response(struct ipw_priv *priv,
 				    !memcmp(network->ssid,
 					    priv->assoc_network->ssid,
 					    network->ssid_len)) {
-					queue_work(priv->workqueue,
+					schedule_work(&priv->merge_networks);
-						   &priv->merge_networks);
 				}
 	}
 
@@ -7663,7 +7640,7 @@ static int ipw_associate(void *data)
 	if (priv->status & STATUS_DISASSOCIATING) {
 		IPW_DEBUG_ASSOC("Not attempting association (in "
 				"disassociating)\n ");
-		queue_work(priv->workqueue, &priv->associate);
+		schedule_work(&priv->associate);
 		return 0;
 	}
 
@@ -7731,12 +7708,10 @@ static int ipw_associate(void *data)
 
 		if (!(priv->status & STATUS_SCANNING)) {
 			if (!(priv->config & CFG_SPEED_SCAN))
-				queue_delayed_work(priv->workqueue,
+				schedule_delayed_work(&priv->request_scan,
-						   &priv->request_scan,
+						      SCAN_INTERVAL);
-						   SCAN_INTERVAL);
 			else
-				queue_delayed_work(priv->workqueue,
+				schedule_delayed_work(&priv->request_scan, 0);
-						   &priv->request_scan, 0);
 		}
 
 		return 0;
@@ -8899,7 +8874,7 @@ static int ipw_wx_set_mode(struct net_device *dev,
 
 	priv->ieee->iw_mode = wrqu->mode;
 
-	queue_work(priv->workqueue, &priv->adapter_restart);
+	schedule_work(&priv->adapter_restart);
 	mutex_unlock(&priv->mutex);
 	return err;
 }
@@ -9598,7 +9573,7 @@ static int ipw_wx_set_scan(struct net_device *dev,
 
 	IPW_DEBUG_WX("Start scan\n");
 
-	queue_delayed_work(priv->workqueue, work, 0);
+	schedule_delayed_work(work, 0);
 
 	return 0;
 }
@@ -9937,7 +9912,7 @@ static int ipw_wx_set_monitor(struct net_device *dev,
 #else
 			priv->net_dev->type = ARPHRD_IEEE80211;
 #endif
-			queue_work(priv->workqueue, &priv->adapter_restart);
+			schedule_work(&priv->adapter_restart);
 		}
 
 		ipw_set_channel(priv, parms[1]);
@@ -9947,7 +9922,7 @@ static int ipw_wx_set_monitor(struct net_device *dev,
 			return 0;
 		}
 		priv->net_dev->type = ARPHRD_ETHER;
-		queue_work(priv->workqueue, &priv->adapter_restart);
+		schedule_work(&priv->adapter_restart);
 	}
 	mutex_unlock(&priv->mutex);
 	return 0;
@@ -9961,7 +9936,7 @@ static int ipw_wx_reset(struct net_device *dev,
 {
 	struct ipw_priv *priv = libipw_priv(dev);
 	IPW_DEBUG_WX("RESET\n");
-	queue_work(priv->workqueue, &priv->adapter_restart);
+	schedule_work(&priv->adapter_restart);
 	return 0;
 }
 
@@ -10551,7 +10526,7 @@ static int ipw_net_set_mac_address(struct net_device *dev, void *p)
 	memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
 	printk(KERN_INFO "%s: Setting MAC to %pM\n",
 	       priv->net_dev->name, priv->mac_addr);
-	queue_work(priv->workqueue, &priv->adapter_restart);
+	schedule_work(&priv->adapter_restart);
 	mutex_unlock(&priv->mutex);
 	return 0;
 }
@@ -10684,9 +10659,7 @@ static void ipw_rf_kill(void *adapter)
 
 	if (rf_kill_active(priv)) {
 		IPW_DEBUG_RF_KILL("RF Kill active, rescheduling GPIO check\n");
-		if (priv->workqueue)
+		schedule_delayed_work(&priv->rf_kill, 2 * HZ);
-			queue_delayed_work(priv->workqueue,
-					   &priv->rf_kill, 2 * HZ);
 		goto exit_unlock;
 	}
 
@@ -10697,7 +10670,7 @@ static void ipw_rf_kill(void *adapter)
 				  "device\n");
 
 		/* we can not do an adapter restart while inside an irq lock */
-		queue_work(priv->workqueue, &priv->adapter_restart);
+		schedule_work(&priv->adapter_restart);
 	} else
 		IPW_DEBUG_RF_KILL("HW RF Kill deactivated.  SW RF Kill still "
 				  "enabled\n");
@@ -10735,7 +10708,7 @@ static void ipw_link_up(struct ipw_priv *priv)
 	notify_wx_assoc_event(priv);
 
 	if (priv->config & CFG_BACKGROUND_SCAN)
-		queue_delayed_work(priv->workqueue, &priv->request_scan, HZ);
+		schedule_delayed_work(&priv->request_scan, HZ);
 }
 
 static void ipw_bg_link_up(struct work_struct *work)
@@ -10764,7 +10737,7 @@ static void ipw_link_down(struct ipw_priv *priv)
 
 	if (!(priv->status & STATUS_EXIT_PENDING)) {
 		/* Queue up another scan... */
-		queue_delayed_work(priv->workqueue, &priv->request_scan, 0);
+		schedule_delayed_work(&priv->request_scan, 0);
 	} else
 		cancel_delayed_work(&priv->scan_event);
 }
@@ -10782,7 +10755,6 @@ static int __devinit ipw_setup_deferred_work(struct ipw_priv *priv)
 {
 	int ret = 0;
 
-	priv->workqueue = create_workqueue(DRV_NAME);
 	init_waitqueue_head(&priv->wait_command_queue);
 	init_waitqueue_head(&priv->wait_state);
 
@@ -11339,8 +11311,7 @@ static int ipw_up(struct ipw_priv *priv)
 			IPW_WARNING("Radio Frequency Kill Switch is On:\n"
 				    "Kill switch must be turned off for "
 				    "wireless networking to work.\n");
-			queue_delayed_work(priv->workqueue, &priv->rf_kill,
+			schedule_delayed_work(&priv->rf_kill, 2 * HZ);
-					   2 * HZ);
 			return 0;
 		}
 
@@ -11350,8 +11321,7 @@ static int ipw_up(struct ipw_priv *priv)
 
 			/* If configure to try and auto-associate, kick
 			 * off a scan. */
-			queue_delayed_work(priv->workqueue,
+			schedule_delayed_work(&priv->request_scan, 0);
-					   &priv->request_scan, 0);
 
 			return 0;
 		}
@@ -11817,7 +11787,7 @@ static int __devinit ipw_pci_probe(struct pci_dev *pdev,
 	err = request_irq(pdev->irq, ipw_isr, IRQF_SHARED, DRV_NAME, priv);
 	if (err) {
 		IPW_ERROR("Error allocating IRQ %d\n", pdev->irq);
-		goto out_destroy_workqueue;
+		goto out_iounmap;
 	}
 
 	SET_NETDEV_DEV(net_dev, &pdev->dev);
@@ -11885,9 +11855,6 @@ static int __devinit ipw_pci_probe(struct pci_dev *pdev,
 	sysfs_remove_group(&pdev->dev.kobj, &ipw_attribute_group);
       out_release_irq:
 	free_irq(pdev->irq, priv);
-      out_destroy_workqueue:
-	destroy_workqueue(priv->workqueue);
-	priv->workqueue = NULL;
       out_iounmap:
 	iounmap(priv->hw_base);
       out_pci_release_regions:
@@ -11930,18 +11897,31 @@ static void __devexit ipw_pci_remove(struct pci_dev *pdev)
 		kfree(priv->cmdlog);
 		priv->cmdlog = NULL;
 	}
-	/* ipw_down will ensure that there is no more pending work
+
-	 * in the workqueue's, so we can safely remove them now. */
+	/* make sure all works are inactive */
-	cancel_delayed_work(&priv->adhoc_check);
+	cancel_delayed_work_sync(&priv->adhoc_check);
-	cancel_delayed_work(&priv->gather_stats);
+	cancel_work_sync(&priv->associate);
-	cancel_delayed_work(&priv->request_scan);
+	cancel_work_sync(&priv->disassociate);
-	cancel_delayed_work(&priv->request_direct_scan);
+	cancel_work_sync(&priv->system_config);
-	cancel_delayed_work(&priv->request_passive_scan);
+	cancel_work_sync(&priv->rx_replenish);
-	cancel_delayed_work(&priv->scan_event);
+	cancel_work_sync(&priv->adapter_restart);
-	cancel_delayed_work(&priv->rf_kill);
+	cancel_delayed_work_sync(&priv->rf_kill);
-	cancel_delayed_work(&priv->scan_check);
+	cancel_work_sync(&priv->up);
-	destroy_workqueue(priv->workqueue);
+	cancel_work_sync(&priv->down);
-	priv->workqueue = NULL;
+	cancel_delayed_work_sync(&priv->request_scan);
+	cancel_delayed_work_sync(&priv->request_direct_scan);
+	cancel_delayed_work_sync(&priv->request_passive_scan);
+	cancel_delayed_work_sync(&priv->scan_event);
+	cancel_delayed_work_sync(&priv->gather_stats);
+	cancel_work_sync(&priv->abort_scan);
+	cancel_work_sync(&priv->roam);
+	cancel_delayed_work_sync(&priv->scan_check);
+	cancel_work_sync(&priv->link_up);
+	cancel_work_sync(&priv->link_down);
+	cancel_delayed_work_sync(&priv->led_link_on);
+	cancel_delayed_work_sync(&priv->led_link_off);
+	cancel_delayed_work_sync(&priv->led_act_off);
+	cancel_work_sync(&priv->merge_networks);
 
 	/* Free MAC hash list for ADHOC */
 	for (i = 0; i < IPW_IBSS_MAC_HASH_SIZE; i++) {
@@ -12029,7 +12009,7 @@ static int ipw_pci_resume(struct pci_dev *pdev)
 	priv->suspend_time = get_seconds() - priv->suspend_at;
 
 	/* Bring the device back up */
-	queue_work(priv->workqueue, &priv->up);
+	schedule_work(&priv->up);
 
 	return 0;
 }

drivers/net/wireless/ipw2x00/ipw2200.h

@@ -1299,8 +1299,6 @@ struct ipw_priv {
 	u8 direct_scan_ssid[IW_ESSID_MAX_SIZE];
 	u8 direct_scan_ssid_len;
 
-	struct workqueue_struct *workqueue;
-
 	struct delayed_work adhoc_check;
 	struct work_struct associate;
 	struct work_struct disassociate;

drivers/scsi/be2iscsi/be_main.c

@@ -4277,7 +4277,7 @@ static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev,
 
 	snprintf(phba->wq_name, sizeof(phba->wq_name), "beiscsi_q_irq%u",
 		 phba->shost->host_no);
-	phba->wq = create_workqueue(phba->wq_name);
+	phba->wq = alloc_workqueue(phba->wq_name, WQ_MEM_RECLAIM, 1);
 	if (!phba->wq) {
 		shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-"
 				"Failed to allocate work queue\n");

drivers/scsi/qla2xxx/qla_os.c

@@ -349,7 +349,7 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha)
 				"Can't create request queue\n");
 			goto fail;
 		}
-		ha->wq = create_workqueue("qla2xxx_wq");
+		ha->wq = alloc_workqueue("qla2xxx_wq", WQ_MEM_RECLAIM, 1);
 		vha->req = ha->req_q_map[req];
 		options |= BIT_1;
 		for (ques = 1; ques < ha->max_rsp_queues; ques++) {

drivers/scsi/scsi_tgt_lib.c

@@ -629,7 +629,7 @@ static int __init scsi_tgt_init(void)
 	if (!scsi_tgt_cmd_cache)
 		return -ENOMEM;
 
-	scsi_tgtd = create_workqueue("scsi_tgtd");
+	scsi_tgtd = alloc_workqueue("scsi_tgtd", 0, 1);
 	if (!scsi_tgtd) {
 		err = -ENOMEM;
 		goto free_kmemcache;

fs/aio.c

@@ -85,7 +85,7 @@ static int __init aio_setup(void)
 	kiocb_cachep = KMEM_CACHE(kiocb, SLAB_HWCACHE_ALIGN|SLAB_PANIC);
 	kioctx_cachep = KMEM_CACHE(kioctx,SLAB_HWCACHE_ALIGN|SLAB_PANIC);
 
-	aio_wq = create_workqueue("aio");
+	aio_wq = alloc_workqueue("aio", 0, 1);	/* used to limit concurrency */
 	abe_pool = mempool_create_kmalloc_pool(1, sizeof(struct aio_batch_entry));
 	BUG_ON(!aio_wq || !abe_pool);
 
@@ -577,7 +577,7 @@ static int __aio_put_req(struct kioctx *ctx, struct kiocb *req)
 		spin_lock(&fput_lock);
 		list_add(&req->ki_list, &fput_head);
 		spin_unlock(&fput_lock);
-		queue_work(aio_wq, &fput_work);
+		schedule_work(&fput_work);
 	} else {
 		req->ki_filp = NULL;
 		really_put_req(ctx, req);

fs/ext4/super.c

@@ -3511,7 +3511,12 @@ 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");
+	/*
+	 * The maximum number of concurrent works can be high and
+	 * concurrency isn't really necessary.  Limit it to 1.
+	 */
+	EXT4_SB(sb)->dio_unwritten_wq =
+		alloc_workqueue("ext4-dio-unwritten", WQ_MEM_RECLAIM, 1);
 	if (!EXT4_SB(sb)->dio_unwritten_wq) {
 		printk(KERN_ERR "EXT4-fs: failed to create DIO workqueue\n");
 		goto failed_mount_wq;

fs/nfs/inode.c

@@ -1518,7 +1518,7 @@ static int nfsiod_start(void)
 {
 	struct workqueue_struct *wq;
 	dprintk("RPC:       creating workqueue nfsiod\n");
-	wq = alloc_workqueue("nfsiod", WQ_RESCUER, 0);
+	wq = alloc_workqueue("nfsiod", WQ_MEM_RECLAIM, 0);
 	if (wq == NULL)
 		return -ENOMEM;
 	nfsiod_workqueue = wq;

fs/ocfs2/quota.h

@@ -114,7 +114,4 @@ int ocfs2_local_write_dquot(struct dquot *dquot);
 extern const struct dquot_operations ocfs2_quota_operations;
 extern struct quota_format_type ocfs2_quota_format;
 
-int ocfs2_quota_setup(void);
-void ocfs2_quota_shutdown(void);
-
 #endif /* _OCFS2_QUOTA_H */

fs/ocfs2/quota_global.c

@@ -63,8 +63,6 @@
  *        write to gf
  */
 
-static struct workqueue_struct *ocfs2_quota_wq = NULL;
-
 static void qsync_work_fn(struct work_struct *work);
 
 static void ocfs2_global_disk2memdqb(struct dquot *dquot, void *dp)
@@ -400,8 +398,8 @@ int ocfs2_global_read_info(struct super_block *sb, int type)
 						OCFS2_QBLK_RESERVED_SPACE;
 	oinfo->dqi_gi.dqi_qtree_depth = qtree_depth(&oinfo->dqi_gi);
 	INIT_DELAYED_WORK(&oinfo->dqi_sync_work, qsync_work_fn);
-	queue_delayed_work(ocfs2_quota_wq, &oinfo->dqi_sync_work,
+	schedule_delayed_work(&oinfo->dqi_sync_work,
-			   msecs_to_jiffies(oinfo->dqi_syncms));
+			      msecs_to_jiffies(oinfo->dqi_syncms));
 
 out_err:
 	mlog_exit(status);
@@ -635,8 +633,8 @@ static void qsync_work_fn(struct work_struct *work)
 	struct super_block *sb = oinfo->dqi_gqinode->i_sb;
 
 	dquot_scan_active(sb, ocfs2_sync_dquot_helper, oinfo->dqi_type);
-	queue_delayed_work(ocfs2_quota_wq, &oinfo->dqi_sync_work,
+	schedule_delayed_work(&oinfo->dqi_sync_work,
-			   msecs_to_jiffies(oinfo->dqi_syncms));
+			      msecs_to_jiffies(oinfo->dqi_syncms));
 }
 
 /*
@@ -923,20 +921,3 @@ const struct dquot_operations ocfs2_quota_operations = {
 	.alloc_dquot	= ocfs2_alloc_dquot,
 	.destroy_dquot	= ocfs2_destroy_dquot,
 };
-
-int ocfs2_quota_setup(void)
-{
-	ocfs2_quota_wq = create_workqueue("o2quot");
-	if (!ocfs2_quota_wq)
-		return -ENOMEM;
-	return 0;
-}
-
-void ocfs2_quota_shutdown(void)
-{
-	if (ocfs2_quota_wq) {
-		flush_workqueue(ocfs2_quota_wq);
-		destroy_workqueue(ocfs2_quota_wq);
-		ocfs2_quota_wq = NULL;
-	}
-}

fs/ocfs2/super.c

@@ -1657,16 +1657,11 @@ static int __init ocfs2_init(void)
 		mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
 	}
 
-	status = ocfs2_quota_setup();
-	if (status)
-		goto leave;
-
 	ocfs2_set_locking_protocol();
 
 	status = register_quota_format(&ocfs2_quota_format);
 leave:
 	if (status < 0) {
-		ocfs2_quota_shutdown();
 		ocfs2_free_mem_caches();
 		exit_ocfs2_uptodate_cache();
 	}
@@ -1683,8 +1678,6 @@ static void __exit ocfs2_exit(void)
 {
 	mlog_entry_void();
 
-	ocfs2_quota_shutdown();
-
 	if (ocfs2_wq) {
 		flush_workqueue(ocfs2_wq);
 		destroy_workqueue(ocfs2_wq);

fs/reiserfs/journal.c

@@ -2876,7 +2876,7 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
 	reiserfs_mounted_fs_count++;
 	if (reiserfs_mounted_fs_count <= 1) {
 		reiserfs_write_unlock(sb);
-		commit_wq = create_workqueue("reiserfs");
+		commit_wq = alloc_workqueue("reiserfs", WQ_MEM_RECLAIM, 0);
 		reiserfs_write_lock(sb);
 	}
 

fs/xfs/linux-2.6/xfs_buf.c

@@ -2022,11 +2022,12 @@ xfs_buf_init(void)
 	if (!xfslogd_workqueue)
 		goto out_free_buf_zone;
 
-	xfsdatad_workqueue = create_workqueue("xfsdatad");
+	xfsdatad_workqueue = alloc_workqueue("xfsdatad", WQ_MEM_RECLAIM, 1);
 	if (!xfsdatad_workqueue)
 		goto out_destroy_xfslogd_workqueue;
 
-	xfsconvertd_workqueue = create_workqueue("xfsconvertd");
+	xfsconvertd_workqueue = alloc_workqueue("xfsconvertd",
+						WQ_MEM_RECLAIM, 1);
 	if (!xfsconvertd_workqueue)
 		goto out_destroy_xfsdatad_workqueue;
 

fs/xfs/xfs_mru_cache.c

@@ -309,7 +309,7 @@ xfs_mru_cache_init(void)
 	if (!xfs_mru_elem_zone)
 		goto out;
 
-	xfs_mru_reap_wq = create_singlethread_workqueue("xfs_mru_cache");
+	xfs_mru_reap_wq = alloc_workqueue("xfs_mru_cache", WQ_MEM_RECLAIM, 1);
 	if (!xfs_mru_reap_wq)
 		goto out_destroy_mru_elem_zone;
 

include/linux/workqueue.h

@@ -286,11 +286,15 @@ enum {
  * any specific CPU, not concurrency managed, and all queued works are
  * executed immediately as long as max_active limit is not reached and
  * resources are available.
+ *
+ * system_freezable_wq is equivalent to system_wq except that it's
+ * freezable.
  */
 extern struct workqueue_struct *system_wq;
 extern struct workqueue_struct *system_long_wq;
 extern struct workqueue_struct *system_nrt_wq;
 extern struct workqueue_struct *system_unbound_wq;
+extern struct workqueue_struct *system_freezable_wq;
 
 extern struct workqueue_struct *
 __alloc_workqueue_key(const char *name, unsigned int flags, int max_active,

kernel/workqueue.c

@@ -251,10 +251,12 @@ struct workqueue_struct *system_wq __read_mostly;
 struct workqueue_struct *system_long_wq __read_mostly;
 struct workqueue_struct *system_nrt_wq __read_mostly;
 struct workqueue_struct *system_unbound_wq __read_mostly;
+struct workqueue_struct *system_freezable_wq __read_mostly;
 EXPORT_SYMBOL_GPL(system_wq);
 EXPORT_SYMBOL_GPL(system_long_wq);
 EXPORT_SYMBOL_GPL(system_nrt_wq);
 EXPORT_SYMBOL_GPL(system_unbound_wq);
+EXPORT_SYMBOL_GPL(system_freezable_wq);
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/workqueue.h>
@@ -3781,8 +3783,10 @@ static int __init init_workqueues(void)
 	system_nrt_wq = alloc_workqueue("events_nrt", WQ_NON_REENTRANT, 0);
 	system_unbound_wq = alloc_workqueue("events_unbound", WQ_UNBOUND,
 					    WQ_UNBOUND_MAX_ACTIVE);
+	system_freezable_wq = alloc_workqueue("events_freezable",
+					      WQ_FREEZABLE, 0);
 	BUG_ON(!system_wq || !system_long_wq || !system_nrt_wq ||
-	       !system_unbound_wq);
+	       !system_unbound_wq || !system_freezable_wq);
 	return 0;
 }
 early_initcall(init_workqueues);

net/9p/trans_fd.c

@@ -153,10 +153,11 @@ struct p9_conn {
 	unsigned long wsched;
 };
 
+static void p9_poll_workfn(struct work_struct *work);
+
 static DEFINE_SPINLOCK(p9_poll_lock);
 static LIST_HEAD(p9_poll_pending_list);
-static struct workqueue_struct *p9_mux_wq;
+static DECLARE_WORK(p9_poll_work, p9_poll_workfn);
-static struct task_struct *p9_poll_task;
 
 static void p9_mux_poll_stop(struct p9_conn *m)
 {
@@ -384,7 +385,7 @@ static void p9_read_work(struct work_struct *work)
 
 		if (n & POLLIN) {
 			P9_DPRINTK(P9_DEBUG_TRANS, "sched read work %p\n", m);
-			queue_work(p9_mux_wq, &m->rq);
+			schedule_work(&m->rq);
 		} else
 			clear_bit(Rworksched, &m->wsched);
 	} else
@@ -497,7 +498,7 @@ static void p9_write_work(struct work_struct *work)
 
 		if (n & POLLOUT) {
 			P9_DPRINTK(P9_DEBUG_TRANS, "sched write work %p\n", m);
-			queue_work(p9_mux_wq, &m->wq);
+			schedule_work(&m->wq);
 		} else
 			clear_bit(Wworksched, &m->wsched);
 	} else
@@ -516,15 +517,14 @@ static int p9_pollwake(wait_queue_t *wait, unsigned mode, int sync, void *key)
 		container_of(wait, struct p9_poll_wait, wait);
 	struct p9_conn *m = pwait->conn;
 	unsigned long flags;
-	DECLARE_WAITQUEUE(dummy_wait, p9_poll_task);
 
 	spin_lock_irqsave(&p9_poll_lock, flags);
 	if (list_empty(&m->poll_pending_link))
 		list_add_tail(&m->poll_pending_link, &p9_poll_pending_list);
 	spin_unlock_irqrestore(&p9_poll_lock, flags);
 
-	/* perform the default wake up operation */
+	schedule_work(&p9_poll_work);
-	return default_wake_function(&dummy_wait, mode, sync, key);
+	return 1;
 }
 
 /**
@@ -629,7 +629,7 @@ static void p9_poll_mux(struct p9_conn *m)
 		P9_DPRINTK(P9_DEBUG_TRANS, "mux %p can read\n", m);
 		if (!test_and_set_bit(Rworksched, &m->wsched)) {
 			P9_DPRINTK(P9_DEBUG_TRANS, "sched read work %p\n", m);
-			queue_work(p9_mux_wq, &m->rq);
+			schedule_work(&m->rq);
 		}
 	}
 
@@ -639,7 +639,7 @@ static void p9_poll_mux(struct p9_conn *m)
 		if ((m->wsize || !list_empty(&m->unsent_req_list)) &&
 		    !test_and_set_bit(Wworksched, &m->wsched)) {
 			P9_DPRINTK(P9_DEBUG_TRANS, "sched write work %p\n", m);
-			queue_work(p9_mux_wq, &m->wq);
+			schedule_work(&m->wq);
 		}
 	}
 }
@@ -677,7 +677,7 @@ static int p9_fd_request(struct p9_client *client, struct p9_req_t *req)
 		n = p9_fd_poll(m->client, NULL);
 
 	if (n & POLLOUT && !test_and_set_bit(Wworksched, &m->wsched))
-		queue_work(p9_mux_wq, &m->wq);
+		schedule_work(&m->wq);
 
 	return 0;
 }
@@ -1047,12 +1047,12 @@ static struct p9_trans_module p9_fd_trans = {
  *
  */
 
-static int p9_poll_proc(void *a)
+static void p9_poll_workfn(struct work_struct *work)
 {
 	unsigned long flags;
 
 	P9_DPRINTK(P9_DEBUG_TRANS, "start %p\n", current);
- repeat:
+
 	spin_lock_irqsave(&p9_poll_lock, flags);
 	while (!list_empty(&p9_poll_pending_list)) {
 		struct p9_conn *conn = list_first_entry(&p9_poll_pending_list,
@@ -1067,35 +1067,11 @@ static int p9_poll_proc(void *a)
 	}
 	spin_unlock_irqrestore(&p9_poll_lock, flags);
 
-	set_current_state(TASK_INTERRUPTIBLE);
-	if (list_empty(&p9_poll_pending_list)) {
-		P9_DPRINTK(P9_DEBUG_TRANS, "sleeping...\n");
-		schedule();
-	}
-	__set_current_state(TASK_RUNNING);
-
-	if (!kthread_should_stop())
-		goto repeat;
-
 	P9_DPRINTK(P9_DEBUG_TRANS, "finish\n");
-	return 0;
 }
 
 int p9_trans_fd_init(void)
 {
-	p9_mux_wq = create_workqueue("v9fs");
-	if (!p9_mux_wq) {
-		printk(KERN_WARNING "v9fs: mux: creating workqueue failed\n");
-		return -ENOMEM;
-	}
-
-	p9_poll_task = kthread_run(p9_poll_proc, NULL, "v9fs-poll");
-	if (IS_ERR(p9_poll_task)) {
-		destroy_workqueue(p9_mux_wq);
-		printk(KERN_WARNING "v9fs: mux: creating poll task failed\n");
-		return PTR_ERR(p9_poll_task);
-	}
-
 	v9fs_register_trans(&p9_tcp_trans);
 	v9fs_register_trans(&p9_unix_trans);
 	v9fs_register_trans(&p9_fd_trans);
@@ -1105,10 +1081,8 @@ int p9_trans_fd_init(void)
 
 void p9_trans_fd_exit(void)
 {
-	kthread_stop(p9_poll_task);
+	flush_work_sync(&p9_poll_work);
 	v9fs_unregister_trans(&p9_tcp_trans);
 	v9fs_unregister_trans(&p9_unix_trans);
 	v9fs_unregister_trans(&p9_fd_trans);
-
-	destroy_workqueue(p9_mux_wq);
 }

net/rds/ib.c

@@ -364,7 +364,6 @@ void rds_ib_exit(void)
 	rds_ib_sysctl_exit();
 	rds_ib_recv_exit();
 	rds_trans_unregister(&rds_ib_transport);
-	rds_ib_fmr_exit();
 }
 
 struct rds_transport rds_ib_transport = {
@@ -400,13 +399,9 @@ int rds_ib_init(void)
 
 	INIT_LIST_HEAD(&rds_ib_devices);
 
-	ret = rds_ib_fmr_init();
-	if (ret)
-		goto out;
-
 	ret = ib_register_client(&rds_ib_client);
 	if (ret)
-		goto out_fmr_exit;
+		goto out;
 
 	ret = rds_ib_sysctl_init();
 	if (ret)
@@ -430,8 +425,6 @@ out_sysctl:
 	rds_ib_sysctl_exit();
 out_ibreg:
 	rds_ib_unregister_client();
-out_fmr_exit:
-	rds_ib_fmr_exit();
 out:
 	return ret;
 }

net/rds/ib.h

@@ -307,8 +307,6 @@ void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents,
 void rds_ib_sync_mr(void *trans_private, int dir);
 void rds_ib_free_mr(void *trans_private, int invalidate);
 void rds_ib_flush_mrs(void);
-int rds_ib_fmr_init(void);
-void rds_ib_fmr_exit(void);
 
 /* ib_recv.c */
 int rds_ib_recv_init(void);

net/rds/ib_rdma.c

@@ -38,8 +38,6 @@
 #include "ib.h"
 #include "xlist.h"
 
-static struct workqueue_struct *rds_ib_fmr_wq;
-
 static DEFINE_PER_CPU(unsigned long, clean_list_grace);
 #define CLEAN_LIST_BUSY_BIT 0
 
@@ -307,7 +305,7 @@ static struct rds_ib_mr *rds_ib_alloc_fmr(struct rds_ib_device *rds_ibdev)
 	int err = 0, iter = 0;
 
 	if (atomic_read(&pool->dirty_count) >= pool->max_items / 10)
-		queue_delayed_work(rds_ib_fmr_wq, &pool->flush_worker, 10);
+		schedule_delayed_work(&pool->flush_worker, 10);
 
 	while (1) {
 		ibmr = rds_ib_reuse_fmr(pool);
@@ -696,24 +694,6 @@ out_nolock:
 	return ret;
 }
 
-int rds_ib_fmr_init(void)
-{
-	rds_ib_fmr_wq = create_workqueue("rds_fmr_flushd");
-	if (!rds_ib_fmr_wq)
-		return -ENOMEM;
-	return 0;
-}
-
-/*
- * By the time this is called all the IB devices should have been torn down and
- * had their pools freed.  As each pool is freed its work struct is waited on,
- * so the pool flushing work queue should be idle by the time we get here.
- */
-void rds_ib_fmr_exit(void)
-{
-	destroy_workqueue(rds_ib_fmr_wq);
-}
-
 static void rds_ib_mr_pool_flush_worker(struct work_struct *work)
 {
 	struct rds_ib_mr_pool *pool = container_of(work, struct rds_ib_mr_pool, flush_worker.work);
@@ -741,7 +721,7 @@ void rds_ib_free_mr(void *trans_private, int invalidate)
 	/* If we've pinned too many pages, request a flush */
 	if (atomic_read(&pool->free_pinned) >= pool->max_free_pinned ||
 	    atomic_read(&pool->dirty_count) >= pool->max_items / 10)
-		queue_delayed_work(rds_ib_fmr_wq, &pool->flush_worker, 10);
+		schedule_delayed_work(&pool->flush_worker, 10);
 
 	if (invalidate) {
 		if (likely(!in_interrupt())) {
@@ -749,8 +729,7 @@ void rds_ib_free_mr(void *trans_private, int invalidate)
 		} else {
 			/* We get here if the user created a MR marked
 			 * as use_once and invalidate at the same time. */
-			queue_delayed_work(rds_ib_fmr_wq,
+			schedule_delayed_work(&pool->flush_worker, 10);
-					   &pool->flush_worker, 10);
 		}
 	}
 

net/sunrpc/sched.c

@@ -955,7 +955,7 @@ static int rpciod_start(void)
 	 * Create the rpciod thread and wait for it to start.
 	 */
 	dprintk("RPC:       creating workqueue rpciod\n");
-	wq = alloc_workqueue("rpciod", WQ_RESCUER, 0);
+	wq = alloc_workqueue("rpciod", WQ_MEM_RECLAIM, 0);
 	rpciod_workqueue = wq;
 	return rpciod_workqueue != NULL;
 }