Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull VFS updates from Al Viro,

Misc cleanups all over the place, mainly wrt /proc interfaces (switch
create_proc_entry to proc_create(), get rid of the deprecated
create_proc_read_entry() in favor of using proc_create_data() and
seq_file etc).

7kloc removed.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits)
  don't bother with deferred freeing of fdtables
  proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h
  proc: Make the PROC_I() and PDE() macros internal to procfs
  proc: Supply a function to remove a proc entry by PDE
  take cgroup_open() and cpuset_open() to fs/proc/base.c
  ppc: Clean up scanlog
  ppc: Clean up rtas_flash driver somewhat
  hostap: proc: Use remove_proc_subtree()
  drm: proc: Use remove_proc_subtree()
  drm: proc: Use minor->index to label things, not PDE->name
  drm: Constify drm_proc_list[]
  zoran: Don't print proc_dir_entry data in debug
  reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show()
  proc: Supply an accessor for getting the data from a PDE's parent
  airo: Use remove_proc_subtree()
  rtl8192u: Don't need to save device proc dir PDE
  rtl8187se: Use a dir under /proc/net/r8180/
  proc: Add proc_mkdir_data()
  proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h}
  proc: Move PDE_NET() to fs/proc/proc_net.c
  ...

drivers/isdn/gigaset/capi.c

@@ -2334,7 +2334,7 @@ static int gigaset_proc_show(struct seq_file *m, void *v)
 
 static int gigaset_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, gigaset_proc_show, PDE(inode)->data);
+	return single_open(file, gigaset_proc_show, PDE_DATA(inode));
 }
 
 static const struct file_operations gigaset_proc_fops = {

drivers/isdn/hardware/avm/b1.c

@@ -702,7 +702,7 @@ static int b1ctl_proc_show(struct seq_file *m, void *v)
 
 static int b1ctl_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, b1ctl_proc_show, PDE(inode)->data);
+	return single_open(file, b1ctl_proc_show, PDE_DATA(inode));
 }
 
 const struct file_operations b1ctl_proc_fops = {

drivers/isdn/hardware/avm/b1dma.c

@@ -944,7 +944,7 @@ static int b1dmactl_proc_show(struct seq_file *m, void *v)
 
 static int b1dmactl_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, b1dmactl_proc_show, PDE(inode)->data);
+	return single_open(file, b1dmactl_proc_show, PDE_DATA(inode));
 }
 
 const struct file_operations b1dmactl_proc_fops = {

drivers/isdn/hardware/avm/c4.c

@@ -1129,7 +1129,7 @@ static int c4_proc_show(struct seq_file *m, void *v)
 
 static int c4_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, c4_proc_show, PDE(inode)->data);
+	return single_open(file, c4_proc_show, PDE_DATA(inode));
 }
 
 static const struct file_operations c4_proc_fops = {

drivers/isdn/hardware/eicon/divasproc.c

@@ -145,7 +145,7 @@ void remove_divas_proc(void)
 static ssize_t grp_opt_proc_write(struct file *file, const char __user *buffer,
 				  size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = PDE(file_inode(file))->data;
+	diva_os_xdi_adapter_t *a = PDE_DATA(file_inode(file));
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
 	if ((count == 1) || (count == 2)) {
@@ -172,7 +172,7 @@ static ssize_t grp_opt_proc_write(struct file *file, const char __user *buffer,
 static ssize_t d_l1_down_proc_write(struct file *file, const char __user *buffer,
 				    size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = PDE(file_inode(file))->data;
+	diva_os_xdi_adapter_t *a = PDE_DATA(file_inode(file));
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
 	if ((count == 1) || (count == 2)) {
@@ -210,7 +210,7 @@ static int d_l1_down_proc_show(struct seq_file *m, void *v)
 
 static int d_l1_down_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, d_l1_down_proc_show, PDE(inode)->data);
+	return single_open(file, d_l1_down_proc_show, PDE_DATA(inode));
 }
 
 static const struct file_operations d_l1_down_proc_fops = {
@@ -236,7 +236,7 @@ static int grp_opt_proc_show(struct seq_file *m, void *v)
 
 static int grp_opt_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, grp_opt_proc_show, PDE(inode)->data);
+	return single_open(file, grp_opt_proc_show, PDE_DATA(inode));
 }
 
 static const struct file_operations grp_opt_proc_fops = {
@@ -251,7 +251,7 @@ static const struct file_operations grp_opt_proc_fops = {
 static ssize_t info_proc_write(struct file *file, const char __user *buffer,
 			       size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = PDE(file_inode(file))->data;
+	diva_os_xdi_adapter_t *a = PDE_DATA(file_inode(file));
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 	char c[4];
 
@@ -335,7 +335,7 @@ static int info_proc_show(struct seq_file *m, void *v)
 
 static int info_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, info_proc_show, PDE(inode)->data);
+	return single_open(file, info_proc_show, PDE_DATA(inode));
 }
 
 static const struct file_operations info_proc_fops = {

drivers/isdn/hysdn/hycapi.c

@@ -469,7 +469,7 @@ static int hycapi_proc_show(struct seq_file *m, void *v)
 
 static int hycapi_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, hycapi_proc_show, PDE(inode)->data);
+	return single_open(file, hycapi_proc_show, PDE_DATA(inode));
 }
 
 static const struct file_operations hycapi_proc_fops = {

drivers/isdn/hysdn/hysdn_procconf.c

@@ -229,23 +229,12 @@ static int
 hysdn_conf_open(struct inode *ino, struct file *filep)
 {
 	hysdn_card *card;
-	struct proc_dir_entry *pd;
 	struct conf_writedata *cnf;
 	char *cp, *tmp;
 
 	/* now search the addressed card */
 	mutex_lock(&hysdn_conf_mutex);
-	card = card_root;
-	while (card) {
-		pd = card->procconf;
-		if (pd == PDE(ino))
-			break;
-		card = card->next;	/* search next entry */
-	}
-	if (!card) {
-		mutex_unlock(&hysdn_conf_mutex);
-		return (-ENODEV);	/* device is unknown/invalid */
-	}
+	card = PDE_DATA(ino);
 	if (card->debug_flags & (LOG_PROC_OPEN | LOG_PROC_ALL))
 		hysdn_addlog(card, "config open for uid=%d gid=%d mode=0x%x",
 			     filep->f_cred->fsuid, filep->f_cred->fsgid,
@@ -317,21 +306,9 @@ hysdn_conf_close(struct inode *ino, struct file *filep)
 	hysdn_card *card;
 	struct conf_writedata *cnf;
 	int retval = 0;
-	struct proc_dir_entry *pd;
 
 	mutex_lock(&hysdn_conf_mutex);
-	/* search the addressed card */
-	card = card_root;
-	while (card) {
-		pd = card->procconf;
-		if (pd == PDE(ino))
-			break;
-		card = card->next;	/* search next entry */
-	}
-	if (!card) {
-		mutex_unlock(&hysdn_conf_mutex);
-		return (-ENODEV);	/* device is unknown/invalid */
-	}
+	card = PDE_DATA(ino);
 	if (card->debug_flags & (LOG_PROC_OPEN | LOG_PROC_ALL))
 		hysdn_addlog(card, "config close for uid=%d gid=%d mode=0x%x",
 			     filep->f_cred->fsuid, filep->f_cred->fsgid,
@@ -394,10 +371,11 @@ hysdn_procconf_init(void)
 	while (card) {
 
 		sprintf(conf_name, "%s%d", PROC_CONF_BASENAME, card->myid);
-		if ((card->procconf = (void *) proc_create(conf_name,
+		if ((card->procconf = (void *) proc_create_data(conf_name,
 							   S_IFREG | S_IRUGO | S_IWUSR,
 							   hysdn_proc_entry,
-							   &conf_fops)) != NULL) {
+							   &conf_fops,
+							   card)) != NULL) {
 			hysdn_proclog_init(card);	/* init the log file entry */
 		}
 		card = card->next;	/* next entry */

drivers/isdn/hysdn/hysdn_proclog.c

@@ -173,27 +173,14 @@ hysdn_log_read(struct file *file, char __user *buf, size_t count, loff_t *off)
 {
 	struct log_data *inf;
 	int len;
-	struct proc_dir_entry *pde = PDE(file_inode(file));
-	struct procdata *pd = NULL;
-	hysdn_card *card;
+	hysdn_card *card = PDE_DATA(file_inode(file));
 
 	if (!*((struct log_data **) file->private_data)) {
+		struct procdata *pd = card->proclog;
 		if (file->f_flags & O_NONBLOCK)
 			return (-EAGAIN);
 
-		/* sorry, but we need to search the card */
-		card = card_root;
-		while (card) {
-			pd = card->proclog;
-			if (pd->log == pde)
-				break;
-			card = card->next;	/* search next entry */
-		}
-		if (card)
-			interruptible_sleep_on(&(pd->rd_queue));
-		else
-			return (-EAGAIN);
-
+		interruptible_sleep_on(&(pd->rd_queue));
 	}
 	if (!(inf = *((struct log_data **) file->private_data)))
 		return (0);
@@ -215,27 +202,15 @@ hysdn_log_read(struct file *file, char __user *buf, size_t count, loff_t *off)
 static int
 hysdn_log_open(struct inode *ino, struct file *filep)
 {
-	hysdn_card *card;
-	struct procdata *pd = NULL;
-	unsigned long flags;
+	hysdn_card *card = PDE_DATA(ino);
 
 	mutex_lock(&hysdn_log_mutex);
-	card = card_root;
-	while (card) {
-		pd = card->proclog;
-		if (pd->log == PDE(ino))
-			break;
-		card = card->next;	/* search next entry */
-	}
-	if (!card) {
-		mutex_unlock(&hysdn_log_mutex);
-		return (-ENODEV);	/* device is unknown/invalid */
-	}
-	filep->private_data = card;	/* remember our own card */
-
 	if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE) {
 		/* write only access -> write log level only */
+		filep->private_data = card;	/* remember our own card */
 	} else if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) {
+		struct procdata *pd = card->proclog;
+		unsigned long flags;
 
 		/* read access -> log/debug read */
 		spin_lock_irqsave(&card->hysdn_lock, flags);
@@ -275,21 +250,13 @@ hysdn_log_close(struct inode *ino, struct file *filep)
 	} else {
 		/* read access -> log/debug read, mark one further file as closed */
 
-		pd = NULL;
 		inf = *((struct log_data **) filep->private_data);	/* get first log entry */
 		if (inf)
 			pd = (struct procdata *) inf->proc_ctrl;	/* still entries there */
 		else {
 			/* no info available -> search card */
-			card = card_root;
-			while (card) {
-				pd = card->proclog;
-				if (pd->log == PDE(ino))
-					break;
-				card = card->next;	/* search next entry */
-			}
-			if (card)
-				pd = card->proclog;	/* pointer to procfs log */
+			card = PDE_DATA(file_inode(filep));
+			pd = card->proclog;	/* pointer to procfs log */
 		}
 		if (pd)
 			pd->if_used--;	/* decrement interface usage count by one */
@@ -319,24 +286,12 @@ static unsigned int
 hysdn_log_poll(struct file *file, poll_table *wait)
 {
 	unsigned int mask = 0;
-	struct proc_dir_entry *pde = PDE(file_inode(file));
-	hysdn_card *card;
-	struct procdata *pd = NULL;
+	hysdn_card *card = PDE_DATA(file_inode(file));
+	struct procdata *pd = card->proclog;
 
 	if ((file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE)
 		return (mask);	/* no polling for write supported */
 
-	/* we need to search the card */
-	card = card_root;
-	while (card) {
-		pd = card->proclog;
-		if (pd->log == pde)
-			break;
-		card = card->next;	/* search next entry */
-	}
-	if (!card)
-		return (mask);	/* card not found */
-
 	poll_wait(file, &(pd->rd_queue), wait);
 
 	if (*((struct log_data **) file->private_data))
@@ -373,9 +328,9 @@ hysdn_proclog_init(hysdn_card *card)
 
 	if ((pd = kzalloc(sizeof(struct procdata), GFP_KERNEL)) != NULL) {
 		sprintf(pd->log_name, "%s%d", PROC_LOG_BASENAME, card->myid);
-		pd->log = proc_create(pd->log_name,
+		pd->log = proc_create_data(pd->log_name,
 				      S_IFREG | S_IRUGO | S_IWUSR, hysdn_proc_entry,
-				      &log_fops);
+				      &log_fops, card);
 
 		init_waitqueue_head(&(pd->rd_queue));
 

drivers/isdn/mISDN/timerdev.c

@@ -64,7 +64,6 @@ mISDN_open(struct inode *ino, struct file *filep)
 	dev->work = 0;
 	init_waitqueue_head(&dev->wait);
 	filep->private_data = dev;
-	__module_get(THIS_MODULE);
 	return nonseekable_open(ino, filep);
 }
 
@@ -72,19 +71,28 @@ static int
 mISDN_close(struct inode *ino, struct file *filep)
 {
 	struct mISDNtimerdev	*dev = filep->private_data;
+	struct list_head	*list = &dev->pending;
 	struct mISDNtimer	*timer, *next;
 
 	if (*debug & DEBUG_TIMER)
 		printk(KERN_DEBUG "%s(%p,%p)\n", __func__, ino, filep);
-	list_for_each_entry_safe(timer, next, &dev->pending, list) {
-		del_timer(&timer->tl);
+
+	spin_lock_irq(&dev->lock);
+	while (!list_empty(list)) {
+		timer = list_first_entry(list, struct mISDNtimer, list);
+		spin_unlock_irq(&dev->lock);
+		del_timer_sync(&timer->tl);
+		spin_lock_irq(&dev->lock);
+		/* it might have been moved to ->expired */
+		list_del(&timer->list);
 		kfree(timer);
 	}
+	spin_unlock_irq(&dev->lock);
+
 	list_for_each_entry_safe(timer, next, &dev->expired, list) {
 		kfree(timer);
 	}
 	kfree(dev);
-	module_put(THIS_MODULE);
 	return 0;
 }
 
@@ -92,36 +100,41 @@ static ssize_t
 mISDN_read(struct file *filep, char __user *buf, size_t count, loff_t *off)
 {
 	struct mISDNtimerdev	*dev = filep->private_data;
+	struct list_head *list = &dev->expired;
 	struct mISDNtimer	*timer;
-	u_long	flags;
 	int	ret = 0;
 
 	if (*debug & DEBUG_TIMER)
 		printk(KERN_DEBUG "%s(%p, %p, %d, %p)\n", __func__,
 		       filep, buf, (int)count, off);
 
-	if (list_empty(&dev->expired) && (dev->work == 0)) {
+	if (count < sizeof(int))
+		return -ENOSPC;
+
+	spin_lock_irq(&dev->lock);
+	while (list_empty(list) && (dev->work == 0)) {
+		spin_unlock_irq(&dev->lock);
 		if (filep->f_flags & O_NONBLOCK)
 			return -EAGAIN;
 		wait_event_interruptible(dev->wait, (dev->work ||
-						     !list_empty(&dev->expired)));
+						     !list_empty(list)));
 		if (signal_pending(current))
 			return -ERESTARTSYS;
+		spin_lock_irq(&dev->lock);
 	}
-	if (count < sizeof(int))
-		return -ENOSPC;
 	if (dev->work)
 		dev->work = 0;
-	if (!list_empty(&dev->expired)) {
-		spin_lock_irqsave(&dev->lock, flags);
-		timer = (struct mISDNtimer *)dev->expired.next;
+	if (!list_empty(list)) {
+		timer = list_first_entry(list, struct mISDNtimer, list);
 		list_del(&timer->list);
-		spin_unlock_irqrestore(&dev->lock, flags);
+		spin_unlock_irq(&dev->lock);
 		if (put_user(timer->id, (int __user *)buf))
 			ret = -EFAULT;
 		else
 			ret = sizeof(int);
 		kfree(timer);
+	} else {
+		spin_unlock_irq(&dev->lock);
 	}
 	return ret;
 }
@@ -153,7 +166,8 @@ dev_expire_timer(unsigned long data)
 	u_long			flags;
 
 	spin_lock_irqsave(&timer->dev->lock, flags);
-	list_move_tail(&timer->list, &timer->dev->expired);
+	if (timer->id >= 0)
+		list_move_tail(&timer->list, &timer->dev->expired);
 	spin_unlock_irqrestore(&timer->dev->lock, flags);
 	wake_up_interruptible(&timer->dev->wait);
 }
@@ -162,7 +176,6 @@ static int
 misdn_add_timer(struct mISDNtimerdev *dev, int timeout)
 {
 	int			id;
-	u_long			flags;
 	struct mISDNtimer	*timer;
 
 	if (!timeout) {
@@ -173,19 +186,16 @@ misdn_add_timer(struct mISDNtimerdev *dev, int timeout)
 		timer = kzalloc(sizeof(struct mISDNtimer), GFP_KERNEL);
 		if (!timer)
 			return -ENOMEM;
-		spin_lock_irqsave(&dev->lock, flags);
-		timer->id = dev->next_id++;
+		timer->dev = dev;
+		setup_timer(&timer->tl, dev_expire_timer, (long)timer);
+		spin_lock_irq(&dev->lock);
+		id = timer->id = dev->next_id++;
 		if (dev->next_id < 0)
 			dev->next_id = 1;
 		list_add_tail(&timer->list, &dev->pending);
-		spin_unlock_irqrestore(&dev->lock, flags);
-		timer->dev = dev;
-		timer->tl.data = (long)timer;
-		timer->tl.function = dev_expire_timer;
-		init_timer(&timer->tl);
 		timer->tl.expires = jiffies + ((HZ * (u_long)timeout) / 1000);
 		add_timer(&timer->tl);
-		id = timer->id;
+		spin_unlock_irq(&dev->lock);
 	}
 	return id;
 }
@@ -193,26 +203,21 @@ misdn_add_timer(struct mISDNtimerdev *dev, int timeout)
 static int
 misdn_del_timer(struct mISDNtimerdev *dev, int id)
 {
-	u_long			flags;
 	struct mISDNtimer	*timer;
-	int			ret = 0;
 
-	spin_lock_irqsave(&dev->lock, flags);
+	spin_lock_irq(&dev->lock);
 	list_for_each_entry(timer, &dev->pending, list) {
 		if (timer->id == id) {
 			list_del_init(&timer->list);
-			/* RED-PEN AK: race -- timer can be still running on
-			 * other CPU. Needs reference count I think
-			 */
-			del_timer(&timer->tl);
-			ret = timer->id;
+			timer->id = -1;
+			spin_unlock_irq(&dev->lock);
+			del_timer_sync(&timer->tl);
 			kfree(timer);
-			goto unlock;
+			return id;
 		}
 	}
-unlock:
-	spin_unlock_irqrestore(&dev->lock, flags);
-	return ret;
+	spin_unlock_irq(&dev->lock);
+	return 0;
 }
 
 static long
@@ -262,6 +267,7 @@ mISDN_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 }
 
 static const struct file_operations mISDN_fops = {
+	.owner		= THIS_MODULE,
 	.read		= mISDN_read,
 	.poll		= mISDN_poll,
 	.unlocked_ioctl	= mISDN_ioctl,