Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (165 commits)
  reiserfs: Properly display mount options in /proc/mounts
  vfs: prevent remount read-only if pending removes
  vfs: count unlinked inodes
  vfs: protect remounting superblock read-only
  vfs: keep list of mounts for each superblock
  vfs: switch ->show_options() to struct dentry *
  vfs: switch ->show_path() to struct dentry *
  vfs: switch ->show_devname() to struct dentry *
  vfs: switch ->show_stats to struct dentry *
  switch security_path_chmod() to struct path *
  vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
  vfs: trim includes a bit
  switch mnt_namespace ->root to struct mount
  vfs: take /proc/*/mounts and friends to fs/proc_namespace.c
  vfs: opencode mntget() mnt_set_mountpoint()
  vfs: spread struct mount - remaining argument of next_mnt()
  vfs: move fsnotify junk to struct mount
  vfs: move mnt_devname
  vfs: move mnt_list to struct mount
  vfs: switch pnode.h macros to struct mount *
  ...

83 files changed, 151 insertions, 164 deletions

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 7711d94a040..86933ca8b47 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -873,7 +873,7 @@ DECLARE_FILE_FUNCTIONS(alarm);
 
 static const struct battery_file {
 	struct file_operations ops;
-	mode_t mode;
+	umode_t mode;
 	const char *name;
 } acpi_battery_file[] = {
 	FILE_DESCRIPTION_RO(info),
diff --git a/drivers/acpi/ec_sys.c b/drivers/acpi/ec_sys.c
index 6c47ae9793a..b258cab9061 100644
--- a/drivers/acpi/ec_sys.c
+++ b/drivers/acpi/ec_sys.c
@@ -105,7 +105,7 @@ int acpi_ec_add_debugfs(struct acpi_ec *ec, unsigned int ec_device_count)
 {
 	struct dentry *dev_dir;
 	char name[64];
-	mode_t mode = 0400;
+	umode_t mode = 0400;
 
 	if (ec_device_count == 0) {
 		acpi_ec_debugfs_dir = debugfs_create_dir("ec", NULL);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 4dac58aa4a0..4a67cc0c8b3 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -248,7 +248,7 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj,
 	if (MAJOR(dev->devt)) {
 		const char *tmp;
 		const char *name;
-		mode_t mode = 0;
+		umode_t mode = 0;
 
 		add_uevent_var(env, "MAJOR=%u", MAJOR(dev->devt));
 		add_uevent_var(env, "MINOR=%u", MINOR(dev->devt));
@@ -1235,7 +1235,7 @@ static struct device *next_device(struct klist_iter *i)
  * freed by the caller.
  */
 const char *device_get_devnode(struct device *dev,
-			       mode_t *mode, const char **tmp)
+			       umode_t *mode, const char **tmp)
 {
 	char *s;
 
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 2bb4bff3af7..8493536ea55 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -40,7 +40,7 @@ static struct req {
 	struct completion done;
 	int err;
 	const char *name;
-	mode_t mode;	/* 0 => delete */
+	umode_t mode;	/* 0 => delete */
 	struct device *dev;
 } *requests;
 
@@ -142,7 +142,7 @@ int devtmpfs_delete_node(struct device *dev)
 	return req.err;
 }
 
-static int dev_mkdir(const char *name, mode_t mode)
+static int dev_mkdir(const char *name, umode_t mode)
 {
 	struct dentry *dentry;
 	struct path path;
@@ -189,7 +189,7 @@ static int create_path(const char *nodepath)
 	return err;
 }
 
-static int handle_create(const char *nodename, mode_t mode, struct device *dev)
+static int handle_create(const char *nodename, umode_t mode, struct device *dev)
 {
 	struct dentry *dentry;
 	struct path path;
@@ -378,7 +378,7 @@ int devtmpfs_mount(const char *mntdir)
 
 static DECLARE_COMPLETION(setup_done);
 
-static int handle(const char *name, mode_t mode, struct device *dev)
+static int handle(const char *name, umode_t mode, struct device *dev)
 {
 	if (mode)
 		return handle_create(name, mode, dev);
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 8eba86bba59..386146d792d 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -63,7 +63,7 @@
 #include <linux/mutex.h>
 #include <linux/amifdreg.h>
 #include <linux/amifd.h>
-#include <linux/buffer_head.h>
+#include <linux/fs.h>
 #include <linux/blkdev.h>
 #include <linux/elevator.h>
 #include <linux/interrupt.h>
diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c
index 5f8e39c43ae..e86d2062a16 100644
--- a/drivers/block/aoe/aoechr.c
+++ b/drivers/block/aoe/aoechr.c
@@ -270,7 +270,7 @@ static const struct file_operations aoe_fops = {
 	.llseek = noop_llseek,
 };
 
-static char *aoe_devnode(struct device *dev, mode_t *mode)
+static char *aoe_devnode(struct device *dev, umode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "etherd/%s", dev_name(dev));
 }
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index d22119d49e5..ec246437f5a 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -17,7 +17,7 @@
 #include <linux/highmem.h>
 #include <linux/mutex.h>
 #include <linux/radix-tree.h>
-#include <linux/buffer_head.h> /* invalidate_bh_lrus() */
+#include <linux/fs.h>
 #include <linux/slab.h>
 
 #include <asm/uaccess.h>
@@ -402,14 +402,13 @@ static int brd_ioctl(struct block_device *bdev, fmode_t mode,
 	error = -EBUSY;
 	if (bdev->bd_openers <= 1) {
 		/*
-		 * Invalidate the cache first, so it isn't written
-		 * back to the device.
+		 * Kill the cache first, so it isn't written back to the
+		 * device.
 		 *
 		 * Another thread might instantiate more buffercache here,
 		 * but there is not much we can do to close that race.
 		 */
-		invalidate_bh_lrus();
-		truncate_inode_pages(bdev->bd_inode->i_mapping, 0);
+		kill_bdev(bdev);
 		brd_free_pages(brd);
 		error = 0;
 	}
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 9955a53733b..510fb10ec45 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -188,7 +188,6 @@ static int print_unex = 1;
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/mod_devicetable.h>
-#include <linux/buffer_head.h>	/* for invalidate_buffers() */
 #include <linux/mutex.h>
 #include <linux/io.h>
 #include <linux/uaccess.h>
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 1e888c9e85b..f00257782fc 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -69,7 +69,6 @@
 #include <linux/freezer.h>
 #include <linux/mutex.h>
 #include <linux/writeback.h>
-#include <linux/buffer_head.h>		/* for invalidate_bdev() */
 #include <linux/completion.h>
 #include <linux/highmem.h>
 #include <linux/kthread.h>
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index a63b0a2b780..d59edeabd93 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2817,7 +2817,7 @@ static const struct block_device_operations pktcdvd_ops = {
 	.check_events =		pkt_check_events,
 };
 
-static char *pktcdvd_devnode(struct gendisk *gd, mode_t *mode)
+static char *pktcdvd_devnode(struct gendisk *gd, umode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "pktcdvd/%s", gd->disk_name);
 }
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index f997c27d79e..2118211aff9 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -267,7 +267,6 @@
 
 #include <linux/module.h>
 #include <linux/fs.h>
-#include <linux/buffer_head.h>
 #include <linux/major.h>
 #include <linux/types.h>
 #include <linux/errno.h>
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 14517903371..d6e9d081c8b 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -847,7 +847,7 @@ static const struct file_operations kmsg_fops = {
 
 static const struct memdev {
 	const char *name;
-	mode_t mode;
+	umode_t mode;
 	const struct file_operations *fops;
 	struct backing_dev_info *dev_info;
 } devlist[] = {
@@ -901,7 +901,7 @@ static const struct file_operations memory_fops = {
 	.llseek = noop_llseek,
 };
 
-static char *mem_devnode(struct device *dev, mode_t *mode)
+static char *mem_devnode(struct device *dev, umode_t *mode)
 {
 	if (mode && devlist[MINOR(dev->devt)].mode)
 		*mode = devlist[MINOR(dev->devt)].mode;
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 778273c9324..522136d4084 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -258,7 +258,7 @@ int misc_deregister(struct miscdevice *misc)
 EXPORT_SYMBOL(misc_register);
 EXPORT_SYMBOL(misc_deregister);
 
-static char *misc_devnode(struct device *dev, mode_t *mode)
+static char *misc_devnode(struct device *dev, umode_t *mode)
 {
 	struct miscdevice *c = dev_get_drvdata(dev);
 
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index b6de2c04714..54a3a6d0981 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -308,7 +308,7 @@ static const struct file_operations raw_ctl_fops = {
 
 static struct cdev raw_cdev;
 
-static char *raw_devnode(struct device *dev, mode_t *mode)
+static char *raw_devnode(struct device *dev, umode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "raw/%s", dev_name(dev));
 }
diff --git a/drivers/char/tile-srom.c b/drivers/char/tile-srom.c
index cf3ee008dca..4dc019408fa 100644
--- a/drivers/char/tile-srom.c
+++ b/drivers/char/tile-srom.c
@@ -329,7 +329,7 @@ static struct device_attribute srom_dev_attrs[] = {
 	__ATTR_NULL
 };
 
-static char *srom_devnode(struct device *dev, mode_t *mode)
+static char *srom_devnode(struct device *dev, umode_t *mode)
 {
 	*mode = S_IRUGO | S_IWUSR;
 	return kasprintf(GFP_KERNEL, "srom/%s", dev_name(dev));
diff --git a/drivers/firmware/iscsi_ibft.c b/drivers/firmware/iscsi_ibft.c
index 2cce44a1d7d..3ee852c9925 100644
--- a/drivers/firmware/iscsi_ibft.c
+++ b/drivers/firmware/iscsi_ibft.c
@@ -433,11 +433,11 @@ static int __init ibft_check_device(void)
  * Helper routiners to check to determine if the entry is valid
  * in the proper iBFT structure.
  */
-static mode_t ibft_check_nic_for(void *data, int type)
+static umode_t ibft_check_nic_for(void *data, int type)
 {
 	struct ibft_kobject *entry = data;
 	struct ibft_nic *nic = entry->nic;
-	mode_t rc = 0;
+	umode_t rc = 0;
 
 	switch (type) {
 	case ISCSI_BOOT_ETH_INDEX:
@@ -488,11 +488,11 @@ static mode_t ibft_check_nic_for(void *data, int type)
 	return rc;
 }
 
-static mode_t __init ibft_check_tgt_for(void *data, int type)
+static umode_t __init ibft_check_tgt_for(void *data, int type)
 {
 	struct ibft_kobject *entry = data;
 	struct ibft_tgt *tgt = entry->tgt;
-	mode_t rc = 0;
+	umode_t rc = 0;
 
 	switch (type) {
 	case ISCSI_BOOT_TGT_INDEX:
@@ -524,11 +524,11 @@ static mode_t __init ibft_check_tgt_for(void *data, int type)
 	return rc;
 }
 
-static mode_t __init ibft_check_initiator_for(void *data, int type)
+static umode_t __init ibft_check_initiator_for(void *data, int type)
 {
 	struct ibft_kobject *entry = data;
 	struct ibft_initiator *init = entry->initiator;
-	mode_t rc = 0;
+	umode_t rc = 0;
 
 	switch (type) {
 	case ISCSI_BOOT_INI_INDEX:
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 0f9ef9bf673..62c3675045a 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -72,7 +72,7 @@ static int drm_class_resume(struct device *dev)
 	return 0;
 }
 
-static char *drm_devnode(struct device *dev, mode_t *mode)
+static char *drm_devnode(struct device *dev, umode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "dri/%s", dev_name(dev));
 }
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index 4ef02b269a7..7c297d305d5 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -859,7 +859,7 @@ static const struct file_operations hiddev_fops = {
 	.llseek		= noop_llseek,
 };
 
-static char *hiddev_devnode(struct device *dev, mode_t *mode)
+static char *hiddev_devnode(struct device *dev, umode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
 }
diff --git a/drivers/hwmon/dme1737.c b/drivers/hwmon/dme1737.c
index d9c59271391..d9803958e49 100644
--- a/drivers/hwmon/dme1737.c
+++ b/drivers/hwmon/dme1737.c
@@ -1223,7 +1223,7 @@ static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 }
 
 static struct attribute *dme1737_pwm_chmod_attr[];
-static void dme1737_chmod_file(struct device*, struct attribute*, mode_t);
+static void dme1737_chmod_file(struct device*, struct attribute*, umode_t);
 
 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 		       const char *buf, size_t count)
@@ -1961,7 +1961,7 @@ static inline void dme1737_sio_outb(int sio_cip, int reg, int val)
 static int dme1737_i2c_get_features(int, struct dme1737_data*);
 
 static void dme1737_chmod_file(struct device *dev,
-			       struct attribute *attr, mode_t mode)
+			       struct attribute *attr, umode_t mode)
 {
 	if (sysfs_chmod_file(&dev->kobj, attr, mode)) {
 		dev_warn(dev, "Failed to change permissions of %s.\n",
@@ -1971,7 +1971,7 @@ static void dme1737_chmod_file(struct device *dev,