new kfifo API

diff -u -N -r linux-2.6.31-rc4-kfifo1/drivers/char/nozomi.c linux-2.6.31-rc4-kfifo2/drivers/char/nozomi.c
@@ -685,7 +685,7 @@
 
 		for (i = PORT_MDM; i < MAX_PORT; i++) {
 			kfifo_alloc(&dc->port[i].fifo_ul,
-				FIFO_BUFFER_SIZE_UL, GFP_ATOMIC, NULL);
+				FIFO_BUFFER_SIZE_UL, GFP_ATOMIC);
 			memset(&dc->port[i].ctrl_dl, 0, sizeof(struct ctrl_dl));
 			memset(&dc->port[i].ctrl_ul, 0, sizeof(struct ctrl_ul));
 		}

diff -u -N -r linux-2.6.31-rc4-kfifo1/drivers/char/sonypi.c linux-2.6.31-rc4-kfifo2/drivers/char/sonypi.c
@@ -776,8 +776,9 @@
 {
 	struct sonypi_keypress kp;
 
-	while (kfifo_get(&sonypi_device.input_fifo, (unsigned char *)&kp,
-			 sizeof(kp)) == sizeof(kp)) {
+	while (kfifo_get_locked(&sonypi_device.input_fifo, (unsigned char *)&kp,
+			 sizeof(kp), &sonypi_device.input_fifo_lock)
+			== sizeof(kp)) {
 		msleep(10);
 		input_report_key(kp.dev, kp.key, 0);
 		input_sync(kp.dev);

@@ -826,8 +827,9 @@
 	if (kp.dev) {
 		input_report_key(kp.dev, kp.key, 1);
 		input_sync(kp.dev);
-		kfifo_put(&sonypi_device.input_fifo,
-			  (unsigned char *)&kp, sizeof(kp));
+		kfifo_put_locked(&sonypi_device.input_fifo,
+			(unsigned char *)&kp, sizeof(kp),
+			&sonypi_device.input_fifo_lock);
 		schedule_work(&sonypi_device.input_work);
 	}
 }

@@ -879,7 +881,8 @@
 		acpi_bus_generate_proc_event(sonypi_acpi_device, 1, event);
 #endif
 
-	kfifo_put(&sonypi_device.fifo, (unsigned char *)&event, sizeof(event));
+	kfifo_put_locked(&sonypi_device.fifo, (unsigned char *)&event,
+			sizeof(event), &sonypi_device.fifo_lock);
 	kill_fasync(&sonypi_device.fifo_async, SIGIO, POLL_IN);
 	wake_up_interruptible(&sonypi_device.fifo_proc_list);
 

@@ -928,7 +931,8 @@
 		return ret;
 
 	while (ret < count &&
-	       (kfifo_get(&sonypi_device.fifo, &c, sizeof(c)) == sizeof(c))) {
+	       (kfifo_get_locked(&sonypi_device.fifo, &c, sizeof(c),
+				 &sonypi_device.fifo_lock) == sizeof(c))) {
 		if (put_user(c, buf++))
 			return -EFAULT;
 		ret++;

@@ -1312,8 +1316,7 @@
 			"http://www.linux.it/~malattia/wiki/index.php/Sony_drivers\n");
 
 	spin_lock_init(&sonypi_device.fifo_lock);
-	error = kfifo_alloc(&sonypi_device.fifo, SONYPI_BUF_SIZE, GFP_KERNEL,
-					 &sonypi_device.fifo_lock);
+	error = kfifo_alloc(&sonypi_device.fifo, SONYPI_BUF_SIZE, GFP_KERNEL);
 	if (error) {
 		printk(KERN_ERR "sonypi: kfifo_alloc failed\n");
 		return error;

@@ -1393,7 +1396,7 @@
 
 		spin_lock_init(&sonypi_device.input_fifo_lock);
 		error = kfifo_alloc(&sonypi_device.input_fifo, SONYPI_BUF_SIZE,
-				GFP_KERNEL, &sonypi_device.input_fifo_lock);
+				GFP_KERNEL);
 		if (error) {
 			printk(KERN_ERR "sonypi: kfifo_alloc failed\n");
 			goto err_inpdev_unregister;

diff -u -N -r linux-2.6.31-rc4-kfifo1/drivers/infiniband/hw/cxgb3/cxio_resource.c linux-2.6.31-rc4-kfifo2/drivers/infiniband/hw/cxgb3/cxio_resource.c
@@ -55,7 +55,7 @@
 	u32 rarray[16];
 	spin_lock_init(fifo_lock);
 
-	if (kfifo_alloc(fifo, nr * sizeof(u32), GFP_KERNEL, fifo_lock))
+	if (kfifo_alloc(fifo, nr * sizeof(u32), GFP_KERNEL))
 		return -ENOMEM;
 
 	for (i = 0; i < skip_low + skip_high; i++)

@@ -86,7 +86,8 @@
 			__kfifo_put(fifo, (unsigned char *) &i, sizeof(u32));
 
 	for (i = 0; i < skip_low + skip_high; i++)
-		kfifo_get(fifo, (unsigned char *) &entry, sizeof(u32));
+		kfifo_get_locked(fifo, (unsigned char *) &entry,
+				sizeof(u32), fifo_lock);
 	return 0;
 }
 

@@ -113,8 +114,7 @@
 	spin_lock_init(&rdev_p->rscp->qpid_fifo_lock);
 
 	if (kfifo_alloc(&rdev_p->rscp->qpid_fifo, T3_MAX_NUM_QP * sizeof(u32),
-					      GFP_KERNEL,
-					      &rdev_p->rscp->qpid_fifo_lock))
+					      GFP_KERNEL))
 		return -ENOMEM;
 
 	for (i = 16; i < T3_MAX_NUM_QP; i++)

@@ -177,33 +177,37 @@
 /*
  * returns 0 if no resource available
  */
-static u32 cxio_hal_get_resource(struct kfifo *fifo)
+static u32 cxio_hal_get_resource(struct kfifo *fifo, spinlock_t * lock)
 {
 	u32 entry;
-	if (kfifo_get(fifo, (unsigned char *) &entry, sizeof(u32)))
+	if (kfifo_get_locked(fifo, (unsigned char *) &entry, sizeof(u32), lock))
 		return entry;
 	else
 		return 0;	/* fifo emptry */
 }
 
-static void cxio_hal_put_resource(struct kfifo *fifo, u32 entry)
+static void cxio_hal_put_resource(struct kfifo *fifo, spinlock_t * lock,
+		u32 entry)
 {
-	BUG_ON(kfifo_put(fifo, (unsigned char *) &entry, sizeof(u32)) == 0);
+	BUG_ON(
+	kfifo_put_locked(fifo, (unsigned char *) &entry, sizeof(u32), lock)
+	== 0);
 }
 
 u32 cxio_hal_get_stag(struct cxio_hal_resource *rscp)
 {
-	return cxio_hal_get_resource(&rscp->tpt_fifo);
+	return cxio_hal_get_resource(&rscp->tpt_fifo, &rscp->tpt_fifo_lock);
 }
 
 void cxio_hal_put_stag(struct cxio_hal_resource *rscp, u32 stag)
 {
-	cxio_hal_put_resource(&rscp->tpt_fifo, stag);
+	cxio_hal_put_resource(&rscp->tpt_fifo, &rscp->tpt_fifo_lock, stag);
 }
 
 u32 cxio_hal_get_qpid(struct cxio_hal_resource *rscp)
 {
-	u32 qpid = cxio_hal_get_resource(&rscp->qpid_fifo);
+	u32 qpid = cxio_hal_get_resource(&rscp->qpid_fifo,
+			&rscp->qpid_fifo_lock);
 	PDBG("%s qpid 0x%x\n", __func__, qpid);
 	return qpid;
 }

@@ -211,27 +215,27 @@
 void cxio_hal_put_qpid(struct cxio_hal_resource *rscp, u32 qpid)
 {
 	PDBG("%s qpid 0x%x\n", __func__, qpid);
-	cxio_hal_put_resource(&rscp->qpid_fifo, qpid);
+	cxio_hal_put_resource(&rscp->qpid_fifo, &rscp->qpid_fifo_lock, qpid);
 }
 
 u32 cxio_hal_get_cqid(struct cxio_hal_resource *rscp)
 {
-	return cxio_hal_get_resource(&rscp->cqid_fifo);
+	return cxio_hal_get_resource(&rscp->cqid_fifo, &rscp->cqid_fifo_lock);
 }
 
 void cxio_hal_put_cqid(struct cxio_hal_resource *rscp, u32 cqid)
 {
-	cxio_hal_put_resource(&rscp->cqid_fifo, cqid);
+	cxio_hal_put_resource(&rscp->cqid_fifo, &rscp->cqid_fifo_lock, cqid);
 }
 
 u32 cxio_hal_get_pdid(struct cxio_hal_resource *rscp)
 {
-	return cxio_hal_get_resource(&rscp->pdid_fifo);
+	return cxio_hal_get_resource(&rscp->pdid_fifo, &rscp->pdid_fifo_lock);
 }
 
 void cxio_hal_put_pdid(struct cxio_hal_resource *rscp, u32 pdid)
 {
-	cxio_hal_put_resource(&rscp->pdid_fifo, pdid);
+	cxio_hal_put_resource(&rscp->pdid_fifo, &rscp->pdid_fifo_lock, pdid);
 }
 
 void cxio_hal_destroy_resource(struct cxio_hal_resource *rscp)

diff -u -N -r linux-2.6.31-rc4-kfifo1/drivers/media/video/meye.c linux-2.6.31-rc4-kfifo2/drivers/media/video/meye.c
@@ -799,8 +799,8 @@
 		return IRQ_HANDLED;
 
 	if (meye.mchip_mode == MCHIP_HIC_MODE_CONT_OUT) {
-		if (kfifo_get(&meye.grabq, (unsigned char *)&reqnr,
-			      sizeof(int)) != sizeof(int)) {
+		if (kfifo_get_locked(&meye.grabq, (unsigned char *)&reqnr,
+			      sizeof(int), &meye.grabq_lock) != sizeof(int)) {
 			mchip_free_frame();
 			return IRQ_HANDLED;
 		}

@@ -810,7 +810,8 @@
 		meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
 		do_gettimeofday(&meye.grab_buffer[reqnr].timestamp);
 		meye.grab_buffer[reqnr].sequence = sequence++;
-		kfifo_put(&meye.doneq, (unsigned char *)&reqnr, sizeof(int));
+		kfifo_put_locked(&meye.doneq, (unsigned char *)&reqnr,
+				sizeof(int), &meye.doneq_lock);
 		wake_up_interruptible(&meye.proc_list);
 	} else {
 		int size;

@@ -819,8 +820,8 @@
 			mchip_free_frame();
 			goto again;
 		}
-		if (kfifo_get(&meye.grabq, (unsigned char *)&reqnr,
-			      sizeof(int)) != sizeof(int)) {
+		if (kfifo_get_locked(&meye.grabq, (unsigned char *)&reqnr,
+			      sizeof(int), &meye.grabq_lock) != sizeof(int)) {
 			mchip_free_frame();
 			goto again;
 		}

@@ -830,7 +831,8 @@
 		meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
 		do_gettimeofday(&meye.grab_buffer[reqnr].timestamp);
 		meye.grab_buffer[reqnr].sequence = sequence++;
-		kfifo_put(&meye.doneq, (unsigned char *)&reqnr, sizeof(int));
+		kfifo_put_locked(&meye.doneq, (unsigned char *)&reqnr,
+				sizeof(int), &meye.doneq_lock);
 		wake_up_interruptible(&meye.proc_list);
 	}
 	mchip_free_frame();

@@ -932,7 +934,8 @@
 		mchip_cont_compression_start();
 
 	meye.grab_buffer[*nb].state = MEYE_BUF_USING;
-	kfifo_put(&meye.grabq, (unsigned char *)nb, sizeof(int));
+	kfifo_put_locked(&meye.grabq, (unsigned char *)nb, sizeof(int),
+			 &meye.grabq_lock);
 	mutex_unlock(&meye.lock);
 
 	return 0;

@@ -964,7 +967,8 @@
 		/* fall through */
 	case MEYE_BUF_DONE:
 		meye.grab_buffer[*i].state = MEYE_BUF_UNUSED;
-		kfifo_get(&meye.doneq, (unsigned char *)&unused, sizeof(int));
+		kfifo_get_locked(&meye.doneq, (unsigned char *)&unused,
+				sizeof(int), &meye.doneq_lock);
 	}
 	*i = meye.grab_buffer[*i].size;
 	mutex_unlock(&meye.lock);

@@ -1451,7 +1455,8 @@
 	buf->flags |= V4L2_BUF_FLAG_QUEUED;
 	buf->flags &= ~V4L2_BUF_FLAG_DONE;
 	meye.grab_buffer[buf->index].state = MEYE_BUF_USING;
-	kfifo_put(&meye.grabq, (unsigned char *)&buf->index, sizeof(int));
+	kfifo_put_locked(&meye.grabq, (unsigned char *)&buf->index,
+			sizeof(int), &meye.grabq_lock);
 	mutex_unlock(&meye.lock);
 
 	return 0;

@@ -1477,8 +1482,8 @@
 		return -EINTR;
 	}
 
-	if (!kfifo_get(&meye.doneq, (unsigned char *)&reqnr,
-		       sizeof(int))) {
+	if (!kfifo_get_locked(&meye.doneq, (unsigned char *)&reqnr,
+		       sizeof(int), &meye.doneq_lock)) {
 		mutex_unlock(&meye.lock);
 		return -EBUSY;
 	}

@@ -1746,13 +1751,13 @@
 
 	spin_lock_init(&meye.grabq_lock);
 	if (kfifo_alloc(&meye.grabq, sizeof(int) * MEYE_MAX_BUFNBRS,
-				GFP_KERNEL, &meye.grabq_lock)) {
+				GFP_KERNEL)) {
 		printk(KERN_ERR "meye: fifo allocation failed\n");
 		goto outkfifoalloc1;
 	}
 	spin_lock_init(&meye.doneq_lock);
 	if (kfifo_alloc(&meye.doneq, sizeof(int) * MEYE_MAX_BUFNBRS,
-				GFP_KERNEL, &meye.doneq_lock)) {
+				GFP_KERNEL)) {
 		printk(KERN_ERR "meye: fifo allocation failed\n");
 		goto outkfifoalloc2;
 	}

diff -u -N -r linux-2.6.31-rc4-kfifo1/drivers/net/wireless/libertas/main.c linux-2.6.31-rc4-kfifo2/drivers/net/wireless/libertas/main.c
@@ -1121,8 +1121,7 @@
 	priv->resp_len[0] = priv->resp_len[1] = 0;
 
 	/* Create the event FIFO */
-	ret =
-	 kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL, NULL);
+	ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL);
 	if (ret) {
 		lbs_pr_err("Out of memory allocating event FIFO buffer\n");
 		goto out;

diff -u -N -r linux-2.6.31-rc4-kfifo1/drivers/platform/x86/fujitsu-laptop.c linux-2.6.31-rc4-kfifo2/drivers/platform/x86/fujitsu-laptop.c
@@ -834,7 +834,7 @@
 	/* kfifo */
 	spin_lock_init(&fujitsu_hotkey->fifo_lock);
 	error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
-			GFP_KERNEL, &fujitsu_hotkey->fifo_lock);
+			GFP_KERNEL);
 	if (error) {
 		printk(KERN_ERR "kfifo_alloc failed\n");
 		goto err_stop;

@@ -1007,9 +1007,10 @@
 				vdbg_printk(FUJLAPTOP_DBG_TRACE,
 					"Push keycode into ringbuffer [%d]\n",
 					keycode);
-				status = kfifo_put(&fujitsu_hotkey->fifo,
+				status = kfifo_put_locked(&fujitsu_hotkey->fifo,
 						   (unsigned char *)&keycode,
-						   sizeof(keycode));
+						   sizeof(keycode),
+						   &fujitsu_hotkey->fifo_lock);
 				if (status != sizeof(keycode)) {
 					vdbg_printk(FUJLAPTOP_DBG_WARN,
 					    "Could not push keycode [0x%x]\n",

@@ -1020,11 +1021,12 @@
 				}
 			} else if (keycode == 0) {
 				while ((status =
-					kfifo_get
-					(&fujitsu_hotkey->fifo,
+					kfifo_get_locked(
+					 &fujitsu_hotkey->fifo,
 					 (unsigned char *) &keycode_r,
-					 sizeof
-					 (keycode_r))) == sizeof(keycode_r)) {
+					 sizeof(keycode_r),
+					 &fujitsu_hotkey->fifo_lock))
+					 == sizeof(keycode_r)) {
 					input_report_key(input, keycode_r, 0);
 					input_sync(input);
 					vdbg_printk(FUJLAPTOP_DBG_TRACE,

diff -u -N -r linux-2.6.31-rc4-kfifo1/drivers/platform/x86/sony-laptop.c linux-2.6.31-rc4-kfifo2/drivers/platform/x86/sony-laptop.c
@@ -300,8 +300,9 @@
 {
 	struct sony_laptop_keypress kp;
 
-	while (kfifo_get(&sony_laptop_input.fifo, (unsigned char *)&kp,
-			 sizeof(kp)) == sizeof(kp)) {
+	while (kfifo_get_locked(&sony_laptop_input.fifo, (unsigned char *)&kp,
+			sizeof(kp), &sony_laptop_input.fifo_lock)
+			== sizeof(kp)) {
 		msleep(10);
 		input_report_key(kp.dev, kp.key, 0);
 		input_sync(kp.dev);

@@ -362,8 +363,9 @@
 		/* we emit the scancode so we can always remap the key */
 		input_event(kp.dev, EV_MSC, MSC_SCAN, event);
 		input_sync(kp.dev);
-		kfifo_put(&sony_laptop_input.fifo,
-			  (unsigned char *)&kp, sizeof(kp));
+		kfifo_put_locked(&sony_laptop_input.fifo,
+			  (unsigned char *)&kp, sizeof(kp),
+			  &sony_laptop_input.fifo_lock);
 
 		if (!work_pending(&sony_laptop_release_key_work))
 			queue_work(sony_laptop_input.wq,

@@ -386,8 +388,7 @@
 	/* kfifo */
 	spin_lock_init(&sony_laptop_input.fifo_lock);
 	error =
-	 kfifo_alloc(&sony_laptop_input.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
-			    &sony_laptop_input.fifo_lock);
+	 kfifo_alloc(&sony_laptop_input.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
 	if (error) {
 		printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
 		goto err_dec_users;

@@ -2143,7 +2144,8 @@
 		return ret;
 
 	while (ret < count &&
-	       (kfifo_get(&sonypi_compat.fifo, &c, sizeof(c)) == sizeof(c))) {
+	       (kfifo_get_locked(&sonypi_compat.fifo, &c, sizeof(c),
+			  &sonypi_compat.fifo_lock) == sizeof(c))) {
 		if (put_user(c, buf++))
 			return -EFAULT;
 		ret++;

@@ -2322,7 +2324,8 @@
 
 static void sonypi_compat_report_event(u8 event)
 {
-	kfifo_put(&sonypi_compat.fifo, (unsigned char *)&event, sizeof(event));
+	kfifo_put_locked(&sonypi_compat.fifo, (unsigned char *)&event,
+			sizeof(event), &sonypi_compat.fifo_lock);
 	kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
 	wake_up_interruptible(&sonypi_compat.fifo_proc_list);
 }

@@ -2333,8 +2336,7 @@
 
 	spin_lock_init(&sonypi_compat.fifo_lock);
 	error =
-	 kfifo_alloc(&sonypi_compat.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
-					 &sonypi_compat.fifo_lock);
+	 kfifo_alloc(&sonypi_compat.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
 	if (error) {
 		printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
 		return error;

diff -u -N -r linux-2.6.31-rc4-kfifo1/drivers/scsi/libiscsi.c linux-2.6.31-rc4-kfifo2/drivers/scsi/libiscsi.c
@@ -2121,7 +2121,7 @@
 	if (q->pool == NULL)
 		return -ENOMEM;
 
-	kfifo_init(&q->queue, (void*)q->pool, max * sizeof(void*), NULL);
+	kfifo_init(&q->queue, (void*)q->pool, max * sizeof(void*));
 
 	for (i = 0; i < max; i++) {
 		q->pool[i] = kzalloc(item_size, GFP_KERNEL);

diff -u -N -r linux-2.6.31-rc4-kfifo1/drivers/scsi/libiscsi_tcp.c linux-2.6.31-rc4-kfifo2/drivers/scsi/libiscsi_tcp.c
@@ -1128,7 +1128,7 @@
 
 		/* R2T xmit queue */
 		if (kfifo_alloc(&tcp_task->r2tqueue,
-		      session->max_r2t * 4 * sizeof(void*), GFP_KERNEL, NULL)) {
+		      session->max_r2t * 4 * sizeof(void*), GFP_KERNEL)) {
 			iscsi_pool_free(&tcp_task->r2tpool);
 			goto r2t_alloc_fail;
 		}

diff -u -N -r linux-2.6.31-rc4-kfifo1/drivers/scsi/libsrp.c linux-2.6.31-rc4-kfifo2/drivers/scsi/libsrp.c
@@ -58,8 +58,7 @@
 		goto free_pool;
 
 	spin_lock_init(&q->lock);
-	kfifo_init(&q->queue, (void *) q->pool, max * sizeof(void *),
-			      &q->lock);
+	kfifo_init(&q->queue, (void *) q->pool, max * sizeof(void *));
 
 	for (i = 0, iue = q->items; i < max; i++) {
 		__kfifo_put(&q->queue, (void *) &iue, sizeof(void *));

@@ -164,7 +163,8 @@
 {
 	struct iu_entry *iue = NULL;
 
-	kfifo_get(&target->iu_queue.queue, (void *) &iue, sizeof(void *));
+	kfifo_get_locked(&target->iu_queue.queue, (void *) &iue,
+			sizeof(void *), &target->iu_queue.lock);
 	if (!iue)
 		return iue;
 	iue->target = target;

@@ -176,7 +176,8 @@
 
 void srp_iu_put(struct iu_entry *iue)
 {
-	kfifo_put(&iue->target->iu_queue.queue, (void *) &iue, sizeof(void *));
+	kfifo_put_locked(&iue->target->iu_queue.queue, (void *) &iue,
+			sizeof(void *), &iue->target->iu_queue.lock);
 }
 EXPORT_SYMBOL_GPL(srp_iu_put);
 

136 lines not on this page · raw message

diff -u -N -r linux-2.6.31-rc4-kfifo1/kernel/kfifo.c linux-2.6.31-rc4-kfifo2/kernel/kfifo.c
@@ -28,11 +28,10 @@
 #include <linux/log2.h>
 
 static void _kfifo_init(struct kfifo *fifo, unsigned char *buffer,
-		unsigned int size, spinlock_t *lock)
+		unsigned int size)
 {
 	fifo->buffer = buffer;
 	fifo->size = size;
-	fifo->lock = lock;
 
 	kfifo_reset(fifo);
 }

@@ -42,17 +41,15 @@
  * @fifo: the fifo to assign the buffer
  * @buffer: the preallocated buffer to be used.
  * @size: the size of the internal buffer, this have to be a power of 2.
- * @lock: the lock to be used to protect the fifo buffer
  *
  * The buffer will be release with kfifo_free().
  */
-void kfifo_init(struct kfifo *fifo, unsigned char *buffer, unsigned int size,
-			 spinlock_t *lock)
+void kfifo_init(struct kfifo *fifo, unsigned char *buffer, unsigned int size)
 {
 	/* size must be a power of 2 */
 	BUG_ON(!is_power_of_2(size));
 
-	_kfifo_init(fifo, buffer, size, lock);
+	_kfifo_init(fifo, buffer, size);
 }
 EXPORT_SYMBOL(kfifo_init);
 

@@ -61,14 +58,12 @@
  * @fifo: the fifo to assign then new buffer
  * @size: the size of the buffer to be allocated, this have to be a power of 2.
  * @gfp_mask: get_free_pages mask, passed to kmalloc()
- * @lock: the lock to be used to protect the fifo buffer
  *
  * This function dynamically allocates a new fifo internal buffer
  *
  * Return 0 if no error, otherwise the an error code
  */
-int kfifo_alloc(struct kfifo *fifo, unsigned int size,
-			gfp_t gfp_mask, spinlock_t *lock)
+int kfifo_alloc(struct kfifo *fifo, unsigned int size, gfp_t gfp_mask)
 {
 	unsigned char *buffer;
 

@@ -83,11 +78,11 @@
 
 	buffer = kmalloc(size, gfp_mask);
 	if (!buffer) {
-		_kfifo_init(fifo, 0, 0, lock);
+		_kfifo_init(fifo, 0, 0);
 		return -ENOMEM;
 	}
 
-	_kfifo_init(fifo, buffer, size, lock);
+	_kfifo_init(fifo, buffer, size);
 
 	return 0;
 }

diff -u -N -r linux-2.6.31-rc4-kfifo1/net/dccp/probe.c linux-2.6.31-rc4-kfifo2/net/dccp/probe.c
@@ -67,7 +67,7 @@
 	len += vscnprintf(tbuf+len, sizeof(tbuf)-len, fmt, args);
 	va_end(args);
 
-	kfifo_put(&dccpw.fifo, tbuf, len);
+	kfifo_put_locked(&dccpw.fifo, tbuf, len, &dccpw.lock);
 	wake_up(&dccpw.wait);
 }
 

@@ -136,7 +136,7 @@
 	if (error)
 		goto out_free;
 
-	cnt = kfifo_get(&dccpw.fifo, tbuf, len);
+	cnt = kfifo_get_locked(&dccpw.fifo, tbuf, len, &dccpw.lock);
 	error = copy_to_user(buf, tbuf, cnt) ? -EFAULT : 0;
 
 out_free:

@@ -157,7 +157,7 @@
 
 	init_waitqueue_head(&dccpw.wait);
 	spin_lock_init(&dccpw.lock);
-	if (kfifo_alloc(&dccpw.fifo, bufsize, GFP_KERNEL, &dccpw.lock))
+	if (kfifo_alloc(&dccpw.fifo, bufsize, GFP_KERNEL))
 		return ret;
 	if (!proc_net_fops_create(&init_net, procname, S_IRUSR, &dccpprobe_fops))
 		goto err0;