Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (38 commits)
  net: Expose all network devices in a namespaces in sysfs
  hotplug: netns aware uevent_helper
  kobj: Send hotplug events in the proper namespace.
  netlink: Implment netlink_broadcast_filtered
  net/sysfs: Fix the bitrot in network device kobject namespace support
  netns: Teach network device kobjects which namespace they are in.
  kobject: Send hotplug events in all network namespaces
  driver-core: fix Typo in drivers/base/core.c for CONFIG_MODULE
  pci: check caps from sysfs file open to read device dependent config space
  sysfs: add struct file* to bin_attr callbacks
  sysfs: Remove usage of S_BIAS to avoid merge conflict with the vfs tree
  sysfs: Don't use enums in inline function declaration.
  sysfs-namespaces: add a high-level Documentation file
  sysfs: Comment sysfs directory tagging logic
  driver core: Implement ns directory support for device classes.
  sysfs: Implement sysfs_delete_link
  sysfs: Add support for tagged directories with untagged members.
  sysfs: Implement sysfs tagged directory support.
  kobj: Add basic infrastructure for dealing with namespaces.
  sysfs: Remove double free sysfs_get_sb
  ...

Documentation/filesystems/sysfs-tagging.txt

@@ -0,0 +1,42 @@
+Sysfs tagging
+-------------
+
+(Taken almost verbatim from Eric Biederman's netns tagging patch
+commit msg)
+
+The problem.  Network devices show up in sysfs and with the network
+namespace active multiple devices with the same name can show up in
+the same directory, ouch!
+
+To avoid that problem and allow existing applications in network
+namespaces to see the same interface that is currently presented in
+sysfs, sysfs now has tagging directory support.
+
+By using the network namespace pointers as tags to separate out the
+the sysfs directory entries we ensure that we don't have conflicts
+in the directories and applications only see a limited set of
+the network devices.
+
+Each sysfs directory entry may be tagged with zero or one
+namespaces.  A sysfs_dirent is augmented with a void *s_ns.  If a
+directory entry is tagged, then sysfs_dirent->s_flags will have a
+flag between KOBJ_NS_TYPE_NONE and KOBJ_NS_TYPES, and s_ns will
+point to the namespace to which it belongs.
+
+Each sysfs superblock's sysfs_super_info contains an array void
+*ns[KOBJ_NS_TYPES].  When a a task in a tagging namespace
+kobj_nstype first mounts sysfs, a new superblock is created.  It
+will be differentiated from other sysfs mounts by having its
+s_fs_info->ns[kobj_nstype] set to the new namespace.  Note that
+through bind mounting and mounts propagation, a task can easily view
+the contents of other namespaces' sysfs mounts.  Therefore, when a
+namespace exits, it will call kobj_ns_exit() to invalidate any
+sysfs_dirent->s_ns pointers pointing to it.
+
+Users of this interface:
+- define a type in the kobj_ns_type enumeration.
+- call kobj_ns_type_register() with its kobj_ns_type_operations which has
+  - current_ns() which returns current's namespace
+  - netlink_ns() which returns a socket's namespace
+  - initial_ns() which returns the initial namesapce
+- call kobj_ns_exit() when an individual tag is no longer valid

arch/alpha/kernel/pci-sysfs.c

@@ -53,6 +53,7 @@ static int __pci_mmap_fits(struct pci_dev *pdev, int num,
 
 /**
  * pci_mmap_resource - map a PCI resource into user memory space
+ * @filp: open sysfs file
  * @kobj: kobject for mapping
  * @attr: struct bin_attribute for the file being mapped
  * @vma: struct vm_area_struct passed into the mmap
@@ -60,7 +61,8 @@ static int __pci_mmap_fits(struct pci_dev *pdev, int num,
  *
  * Use the bus mapping routines to map a PCI resource into userspace.
  */
-static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
+static int pci_mmap_resource(struct file *filp, struct kobject *kobj,
+			     struct bin_attribute *attr,
 			     struct vm_area_struct *vma, int sparse)
 {
 	struct pci_dev *pdev = to_pci_dev(container_of(kobj,
@@ -89,14 +91,14 @@ static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
 	return hose_mmap_page_range(pdev->sysdata, vma, mmap_type, sparse);
 }
 
-static int pci_mmap_resource_sparse(struct kobject *kobj,
+static int pci_mmap_resource_sparse(struct file *filp, struct kobject *kobj,
 				    struct bin_attribute *attr,
 				    struct vm_area_struct *vma)
 {
 	return pci_mmap_resource(kobj, attr, vma, 1);
 }
 
-static int pci_mmap_resource_dense(struct kobject *kobj,
+static int pci_mmap_resource_dense(struct file *filp, struct kobject *kobj,
 				   struct bin_attribute *attr,
 				   struct vm_area_struct *vma)
 {

arch/mips/txx9/generic/setup.c

@@ -905,7 +905,7 @@ struct txx9_sramc_sysdev {
 	void __iomem *base;
 };
 
-static ssize_t txx9_sram_read(struct kobject *kobj,
+static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
 			      struct bin_attribute *bin_attr,
 			      char *buf, loff_t pos, size_t size)
 {
@@ -920,7 +920,7 @@ static ssize_t txx9_sram_read(struct kobject *kobj,
 	return size;
 }
 
-static ssize_t txx9_sram_write(struct kobject *kobj,
+static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
 			       struct bin_attribute *bin_attr,
 			       char *buf, loff_t pos, size_t size)
 {

arch/powerpc/sysdev/mv64x60_pci.c

@@ -24,7 +24,7 @@
 #define MV64X60_VAL_LEN_MAX		11
 #define MV64X60_PCICFG_CPCI_HOTSWAP	0x68
 
-static ssize_t mv64x60_hs_reg_read(struct kobject *kobj,
+static ssize_t mv64x60_hs_reg_read(struct file *filp, struct kobject *kobj,
 				   struct bin_attribute *attr, char *buf,
 				   loff_t off, size_t count)
 {
@@ -45,7 +45,7 @@ static ssize_t mv64x60_hs_reg_read(struct kobject *kobj,
 	return sprintf(buf, "0x%08x\n", v);
 }
 
-static ssize_t mv64x60_hs_reg_write(struct kobject *kobj,
+static ssize_t mv64x60_hs_reg_write(struct file *filp, struct kobject *kobj,
 				    struct bin_attribute *attr, char *buf,
 				    loff_t off, size_t count)
 {

arch/s390/kernel/ipl.c

@@ -403,8 +403,9 @@ static ssize_t sys_ipl_device_show(struct kobject *kobj,
 static struct kobj_attribute sys_ipl_device_attr =
 	__ATTR(device, S_IRUGO, sys_ipl_device_show, NULL);
 
-static ssize_t ipl_parameter_read(struct kobject *kobj, struct bin_attribute *attr,
-				  char *buf, loff_t off, size_t count)
+static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj,
+				  struct bin_attribute *attr, char *buf,
+				  loff_t off, size_t count)
 {
 	return memory_read_from_buffer(buf, count, &off, IPL_PARMBLOCK_START,
 					IPL_PARMBLOCK_SIZE);
@@ -419,8 +420,9 @@ static struct bin_attribute ipl_parameter_attr = {
 	.read = &ipl_parameter_read,
 };
 
-static ssize_t ipl_scp_data_read(struct kobject *kobj, struct bin_attribute *attr,
-				 char *buf, loff_t off, size_t count)
+static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj,
+				 struct bin_attribute *attr, char *buf,
+				 loff_t off, size_t count)
 {
 	unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len;
 	void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data;
@@ -694,7 +696,7 @@ static struct kobj_attribute sys_reipl_ccw_vmparm_attr =
 
 /* FCP reipl device attributes */
 
-static ssize_t reipl_fcp_scpdata_read(struct kobject *kobj,
+static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj,
 				      struct bin_attribute *attr,
 				      char *buf, loff_t off, size_t count)
 {
@@ -704,7 +706,7 @@ static ssize_t reipl_fcp_scpdata_read(struct kobject *kobj,
 	return memory_read_from_buffer(buf, count, &off, scp_data, size);
 }
 
-static ssize_t reipl_fcp_scpdata_write(struct kobject *kobj,
+static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj,
 				       struct bin_attribute *attr,
 				       char *buf, loff_t off, size_t count)
 {

drivers/acpi/system.c

@@ -71,7 +71,7 @@ struct acpi_table_attr {
 	struct list_head node;
 };
 
-static ssize_t acpi_table_show(struct kobject *kobj,
+static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
 			       struct bin_attribute *bin_attr, char *buf,
 			       loff_t offset, size_t count)
 {

drivers/base/Kconfig

@@ -18,9 +18,9 @@ config UEVENT_HELPER_PATH
 
 config DEVTMPFS
 	bool "Maintain a devtmpfs filesystem to mount at /dev"
-	depends on HOTPLUG && SHMEM && TMPFS
+	depends on HOTPLUG
 	help
-	  This creates a tmpfs filesystem instance early at bootup.
+	  This creates a tmpfs/ramfs filesystem instance early at bootup.
 	  In this filesystem, the kernel driver core maintains device
 	  nodes with their default names and permissions for all
 	  registered devices with an assigned major/minor number.
@@ -33,6 +33,9 @@ config DEVTMPFS
 	  functional /dev without any further help. It also allows simple
 	  rescue systems, and reliably handles dynamic major/minor numbers.
 
+	  Notice: if CONFIG_TMPFS isn't enabled, the simpler ramfs
+	  file system will be used instead.
+
 config DEVTMPFS_MOUNT
 	bool "Automount devtmpfs at /dev, after the kernel mounted the rootfs"
 	depends on DEVTMPFS

drivers/base/class.c

@@ -63,6 +63,14 @@ static void class_release(struct kobject *kobj)
 	kfree(cp);
 }
 
+static const struct kobj_ns_type_operations *class_child_ns_type(struct kobject *kobj)
+{
+	struct class_private *cp = to_class(kobj);
+	struct class *class = cp->class;
+
+	return class->ns_type;
+}
+
 static const struct sysfs_ops class_sysfs_ops = {
 	.show	= class_attr_show,
 	.store	= class_attr_store,
@@ -71,6 +79,7 @@ static const struct sysfs_ops class_sysfs_ops = {
 static struct kobj_type class_ktype = {
 	.sysfs_ops	= &class_sysfs_ops,
 	.release	= class_release,
+	.child_ns_type	= class_child_ns_type,
 };
 
 /* Hotplug events for classes go to the class class_subsys */

drivers/base/core.c

@@ -20,7 +20,6 @@
 #include <linux/notifier.h>
 #include <linux/genhd.h>
 #include <linux/kallsyms.h>
-#include <linux/semaphore.h>
 #include <linux/mutex.h>
 #include <linux/async.h>
 
@@ -132,9 +131,21 @@ static void device_release(struct kobject *kobj)
 	kfree(p);
 }
 
+static const void *device_namespace(struct kobject *kobj)
+{
+	struct device *dev = to_dev(kobj);
+	const void *ns = NULL;
+
+	if (dev->class && dev->class->ns_type)
+		ns = dev->class->namespace(dev);
+
+	return ns;
+}
+
 static struct kobj_type device_ktype = {
 	.release	= device_release,
 	.sysfs_ops	= &dev_sysfs_ops,
+	.namespace	= device_namespace,
 };
 
 
@@ -559,10 +570,10 @@ void device_initialize(struct device *dev)
 	dev->kobj.kset = devices_kset;
 	kobject_init(&dev->kobj, &device_ktype);
 	INIT_LIST_HEAD(&dev->dma_pools);
-	init_MUTEX(&dev->sem);
+	mutex_init(&dev->mutex);
+	lockdep_set_novalidate_class(&dev->mutex);
 	spin_lock_init(&dev->devres_lock);
 	INIT_LIST_HEAD(&dev->devres_head);
-	device_init_wakeup(dev, 0);
 	device_pm_init(dev);
 	set_dev_node(dev, -1);
 }
@@ -596,11 +607,59 @@ static struct kobject *virtual_device_parent(struct device *dev)
 	return virtual_dir;
 }
 
-static struct kobject *get_device_parent(struct device *dev,
-					 struct device *parent)
+struct class_dir {
+	struct kobject kobj;
+	struct class *class;
+};
+
+#define to_class_dir(obj) container_of(obj, struct class_dir, kobj)
+
+static void class_dir_release(struct kobject *kobj)
+{
+	struct class_dir *dir = to_class_dir(kobj);
+	kfree(dir);
+}
+
+static const
+struct kobj_ns_type_operations *class_dir_child_ns_type(struct kobject *kobj)
 {
+	struct class_dir *dir = to_class_dir(kobj);
+	return dir->class->ns_type;
+}
+
+static struct kobj_type class_dir_ktype = {
+	.release	= class_dir_release,
+	.sysfs_ops	= &kobj_sysfs_ops,
+	.child_ns_type	= class_dir_child_ns_type
+};
+
+static struct kobject *
+class_dir_create_and_add(struct class *class, struct kobject *parent_kobj)
+{
+	struct class_dir *dir;
 	int retval;
 
+	dir = kzalloc(sizeof(*dir), GFP_KERNEL);
+	if (!dir)
+		return NULL;
+
+	dir->class = class;
+	kobject_init(&dir->kobj, &class_dir_ktype);
+
+	dir->kobj.kset = &class->p->class_dirs;
+
+	retval = kobject_add(&dir->kobj, parent_kobj, "%s", class->name);
+	if (retval < 0) {
+		kobject_put(&dir->kobj);
+		return NULL;
+	}
+	return &dir->kobj;
+}
+
+
+static struct kobject *get_device_parent(struct device *dev,
+					 struct device *parent)
+{
 	if (dev->class) {
 		static DEFINE_MUTEX(gdp_mutex);
 		struct kobject *kobj = NULL;
@@ -635,18 +694,7 @@ static struct kobject *get_device_parent(struct device *dev,
 		}
 
 		/* or create a new class-directory at the parent device */
-		k = kobject_create();
-		if (!k) {
-			mutex_unlock(&gdp_mutex);
-			return NULL;
-		}
-		k->kset = &dev->class->p->class_dirs;
-		retval = kobject_add(k, parent_kobj, "%s", dev->class->name);
-		if (retval < 0) {
-			mutex_unlock(&gdp_mutex);
-			kobject_put(k);
-			return NULL;
-		}
+		k = class_dir_create_and_add(dev->class, parent_kobj);
 		/* do not emit an uevent for this simple "glue" directory */
 		mutex_unlock(&gdp_mutex);
 		return k;
@@ -738,7 +786,7 @@ out_device:
 out_busid:
 	if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
 	    device_is_not_partition(dev))
-		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+		sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj,
 				  dev_name(dev));
 #else
 	/* link in the class directory pointing to the device */
@@ -756,7 +804,7 @@ out_busid:
 	return 0;
 
 out_busid:
-	sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev));
+	sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj, dev_name(dev));
 #endif
 
 out_subsys:
@@ -784,13 +832,13 @@ static void device_remove_class_symlinks(struct device *dev)
 
 	if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
 	    device_is_not_partition(dev))
-		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+		sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj,
 				  dev_name(dev));
 #else
 	if (dev->parent && device_is_not_partition(dev))
 		sysfs_remove_link(&dev->kobj, "device");
 
-	sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev));
+	sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj, dev_name(dev));
 #endif
 
 	sysfs_remove_link(&dev->kobj, "subsystem");
@@ -1372,7 +1420,7 @@ struct device *__root_device_register(const char *name, struct module *owner)
 		return ERR_PTR(err);
 	}
 
-#ifdef CONFIG_MODULE	/* gotta find a "cleaner" way to do this */
+#ifdef CONFIG_MODULES	/* gotta find a "cleaner" way to do this */
 	if (owner) {
 		struct module_kobject *mk = &owner->mkobj;
 
@@ -1576,6 +1624,14 @@ int device_rename(struct device *dev, char *new_name)
 		goto out;
 	}
 
+#ifndef CONFIG_SYSFS_DEPRECATED
+	if (dev->class) {
+		error = sysfs_rename_link(&dev->class->p->class_subsys.kobj,
+			&dev->kobj, old_device_name, new_name);
+		if (error)
+			goto out;
+	}
+#endif
 	error = kobject_rename(&dev->kobj, new_name);
 	if (error)
 		goto out;
@@ -1590,11 +1646,6 @@ int device_rename(struct device *dev, char *new_name)
 						  new_class_name);
 		}
 	}
-#else
-	if (dev->class) {
-		error = sysfs_rename_link(&dev->class->p->class_subsys.kobj,
-					  &dev->kobj, old_device_name, new_name);
-	}
 #endif
 
 out:
@@ -1735,10 +1786,25 @@ EXPORT_SYMBOL_GPL(device_move);
  */
 void device_shutdown(void)
 {
-	struct device *dev, *devn;
+	struct device *dev;
+
+	spin_lock(&devices_kset->list_lock);
+	/*
+	 * Walk the devices list backward, shutting down each in turn.
+	 * Beware that device unplug events may also start pulling
+	 * devices offline, even as the system is shutting down.
+	 */
+	while (!list_empty(&devices_kset->list)) {
+		dev = list_entry(devices_kset->list.prev, struct device,
+				kobj.entry);
+		get_device(dev);
+		/*
+		 * Make sure the device is off the kset list, in the
+		 * event that dev->*->shutdown() doesn't remove it.
+		 */
+		list_del_init(&dev->kobj.entry);
+		spin_unlock(&devices_kset->list_lock);
 
-	list_for_each_entry_safe_reverse(dev, devn, &devices_kset->list,
-				kobj.entry) {
 		if (dev->bus && dev->bus->shutdown) {
 			dev_dbg(dev, "shutdown\n");
 			dev->bus->shutdown(dev);
@@ -1746,6 +1812,10 @@ void device_shutdown(void)
 			dev_dbg(dev, "shutdown\n");
 			dev->driver->shutdown(dev);
 		}
+		put_device(dev);
+
+		spin_lock(&devices_kset->list_lock);
 	}
+	spin_unlock(&devices_kset->list_lock);
 	async_synchronize_full();
 }

drivers/base/cpu.c

@@ -186,7 +186,7 @@ static ssize_t print_cpus_offline(struct sysdev_class *class,
 	/* display offline cpus < nr_cpu_ids */
 	if (!alloc_cpumask_var(&offline, GFP_KERNEL))
 		return -ENOMEM;
-	cpumask_complement(offline, cpu_online_mask);
+	cpumask_andnot(offline, cpu_possible_mask, cpu_online_mask);
 	n = cpulist_scnprintf(buf, len, offline);
 	free_cpumask_var(offline);
 

drivers/base/dd.c

@@ -40,11 +40,11 @@ static void driver_bound(struct device *dev)
 	pr_debug("driver: '%s': %s: bound to device '%s'\n", dev_name(dev),
 		 __func__, dev->driver->name);
 
+	klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);
+
 	if (dev->bus)
 		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
 					     BUS_NOTIFY_BOUND_DRIVER, dev);
-
-	klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);
 }
 
 static int driver_sysfs_add(struct device *dev)

drivers/base/devtmpfs.c

@@ -20,6 +20,7 @@
 #include <linux/namei.h>
 #include <linux/fs.h>
 #include <linux/shmem_fs.h>
+#include <linux/ramfs.h>
 #include <linux/cred.h>
 #include <linux/sched.h>
 #include <linux/init_task.h>
@@ -45,7 +46,11 @@ __setup("devtmpfs.mount=", mount_param);
 static int dev_get_sb(struct file_system_type *fs_type, int flags,
 		      const char *dev_name, void *data, struct vfsmount *mnt)
 {
+#ifdef CONFIG_TMPFS
 	return get_sb_single(fs_type, flags, data, shmem_fill_super, mnt);
+#else
+	return get_sb_single(fs_type, flags, data, ramfs_fill_super, mnt);
+#endif
 }
 
 static struct file_system_type dev_fs_type = {

drivers/base/firmware_class.c

@@ -27,6 +27,52 @@ MODULE_AUTHOR("Manuel Estrada Sainz");
 MODULE_DESCRIPTION("Multi purpose firmware loading support");
 MODULE_LICENSE("GPL");
 
+/* Builtin firmware support */
+
+#ifdef CONFIG_FW_LOADER
+
+extern struct builtin_fw __start_builtin_fw[];
+extern struct builtin_fw __end_builtin_fw[];
+
+static bool fw_get_builtin_firmware(struct firmware *fw, const char *name)
+{
+	struct builtin_fw *b_fw;
+
+	for (b_fw = __start_builtin_fw; b_fw != __end_builtin_fw; b_fw++) {
+		if (strcmp(name, b_fw->name) == 0) {
+			fw->size = b_fw->size;
+			fw->data = b_fw->data;
+			return true;
+		}
+	}
+
+	return false;
+}
+
+static bool fw_is_builtin_firmware(const struct firmware *fw)
+{
+	struct builtin_fw *b_fw;
+
+	for (b_fw = __start_builtin_fw; b_fw != __end_builtin_fw; b_fw++)
+		if (fw->data == b_fw->data)
+			return true;
+
+	return false;
+}
+
+#else /* Module case - no builtin firmware support */
+
+static inline bool fw_get_builtin_firmware(struct firmware *fw, const char *name)
+{
+	return false;
+}
+
+static inline bool fw_is_builtin_firmware(const struct firmware *fw)
+{
+	return false;
+}
+#endif
+
 enum {
 	FW_STATUS_LOADING,
 	FW_STATUS_DONE,
@@ -40,7 +86,6 @@ static int loading_timeout = 60;	/* In seconds */
 static DEFINE_MUTEX(fw_lock);
 
 struct firmware_priv {
-	char *fw_id;
 	struct completion completion;
 	struct bin_attribute attr_data;
 	struct firmware *fw;
@@ -48,18 +93,11 @@ struct firmware_priv {
 	struct page **pages;
 	int nr_pages;
 	int page_array_size;
-	const char *vdata;
 	struct timer_list timeout;
+	bool nowait;
+	char fw_id[];
 };
 
-#ifdef CONFIG_FW_LOADER
-extern struct builtin_fw __start_builtin_fw[];
-extern struct builtin_fw __end_builtin_fw[];
-#else /* Module case. Avoid ifdefs later; it'll all optimise out */
-static struct builtin_fw *__start_builtin_fw;
-static struct builtin_fw *__end_builtin_fw;
-#endif
-
 static void
 fw_load_abort(struct firmware_priv *fw_priv)
 {
@@ -100,9 +138,25 @@ firmware_timeout_store(struct class *class,
 	return count;
 }
 
-static CLASS_ATTR(timeout, 0644, firmware_timeout_show, firmware_timeout_store);
+static struct class_attribute firmware_class_attrs[] = {
+	__ATTR(timeout, S_IWUSR | S_IRUGO,
+		firmware_timeout_show, firmware_timeout_store),
+	__ATTR_NULL
+};
+
+static void fw_dev_release(struct device *dev)
+{
+	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
+	int i;
+
+	for (i = 0; i < fw_priv->nr_pages; i++)
+		__free_page(fw_priv->pages[i]);
+	kfree(fw_priv->pages);
+	kfree(fw_priv);
+	kfree(dev);
 
-static void fw_dev_release(struct device *dev);
+	module_put(THIS_MODULE);
+}
 
 static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
@@ -112,12 +166,15 @@ static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
 		return -ENOMEM;
 	if (add_uevent_var(env, "TIMEOUT=%i", loading_timeout))
 		return -ENOMEM;
+	if (add_uevent_var(env, "ASYNC=%d", fw_priv->nowait))
+		return -ENOMEM;
 
 	return 0;
 }
 
 static struct class firmware_class = {
 	.name		= "firmware",
+	.class_attrs	= firmware_class_attrs,
 	.dev_uevent	= firmware_uevent,
 	.dev_release	= fw_dev_release,
 };
@@ -130,6 +187,17 @@ static ssize_t firmware_loading_show(struct device *dev,
 	return sprintf(buf, "%d\n", loading);
 }
 
+static void firmware_free_data(const struct firmware *fw)
+{
+	int i;
+	vunmap(fw->data);
+	if (fw->pages) {
+		for (i = 0; i < PFN_UP(fw->size); i++)
+			__free_page(fw->pages[i]);
+		kfree(fw->pages);
+	}
+}
+
 /* Some architectures don't have PAGE_KERNEL_RO */
 #ifndef PAGE_KERNEL_RO
 #define PAGE_KERNEL_RO PAGE_KERNEL
@@ -162,21 +230,21 @@ static ssize_t firmware_loading_store(struct device *dev,
 			mutex_unlock(&fw_lock);
 			break;
 		}
-		vfree(fw_priv->fw->data);
-		fw_priv->fw->data = NULL;
+		firmware_free_data(fw_priv->fw);
+		memset(fw_priv->fw, 0, sizeof(struct firmware));
+		/* If the pages are not owned by 'struct firmware' */
 		for (i = 0; i < fw_priv->nr_pages; i++)
 			__free_page(fw_priv->pages[i]);
 		kfree(fw_priv->pages);
 		fw_priv->pages = NULL;
 		fw_priv->page_array_size = 0;
 		fw_priv->nr_pages = 0;
-		fw_priv->fw->size = 0;
 		set_bit(FW_STATUS_LOADING, &fw_priv->status);
 		mutex_unlock(&fw_lock);
 		break;
 	case 0:
 		if (test_bit(FW_STATUS_LOADING, &fw_priv->status)) {
-			vfree(fw_priv->fw->data);
+			vunmap(fw_priv->fw->data);
 			fw_priv->fw->data = vmap(fw_priv->pages,
 						 fw_priv->nr_pages,
 						 0, PAGE_KERNEL_RO);
@@ -184,7 +252,10 @@ static ssize_t firmware_loading_store(struct device *dev,
 				dev_err(dev, "%s: vmap() failed\n", __func__);
 				goto err;
 			}
-			/* Pages will be freed by vfree() */
+			/* Pages are now owned by 'struct firmware' */
+			fw_priv->fw->pages = fw_priv->pages;
+			fw_priv->pages = NULL;
+
 			fw_priv->page_array_size = 0;
 			fw_priv->nr_pages = 0;
 			complete(&fw_priv->completion);
@@ -207,8 +278,9 @@ static ssize_t firmware_loading_store(struct device *dev,
 static DEVICE_ATTR(loading, 0644, firmware_loading_show, firmware_loading_store);
 
 static ssize_t
-firmware_data_read(struct kobject *kobj, struct bin_attribute *bin_attr,
-		   char *buffer, loff_t offset, size_t count)
+firmware_data_read(struct file *filp, struct kobject *kobj,
+		   struct bin_attribute *bin_attr, char *buffer, loff_t offset,
+		   size_t count)
 {
 	struct device *dev = to_dev(kobj);
 	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
@@ -291,6 +363,7 @@ fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
 
 /**
  * firmware_data_write - write method for firmware
+ * @filp: open sysfs file
  * @kobj: kobject for the device
  * @bin_attr: bin_attr structure
  * @buffer: buffer being written
@@ -301,8 +374,9 @@ fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
  *	the driver as a firmware image.
  **/
 static ssize_t
-firmware_data_write(struct kobject *kobj, struct bin_attribute *bin_attr,
-		    char *buffer, loff_t offset, size_t count)
+firmware_data_write(struct file* filp, struct kobject *kobj,
+		    struct bin_attribute *bin_attr, char *buffer,
+		    loff_t offset, size_t count)
 {
 	struct device *dev = to_dev(kobj);
 	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
@@ -353,21 +427,6 @@ static struct bin_attribute firmware_attr_data_tmpl = {
 	.write = firmware_data_write,
 };
 
-static void fw_dev_release(struct device *dev)
-{
-	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
-	int i;
-
-	for (i = 0; i < fw_priv->nr_pages; i++)
-		__free_page(fw_priv->pages[i]);
-	kfree(fw_priv->pages);
-	kfree(fw_priv->fw_id);
-	kfree(fw_priv);
-	kfree(dev);
-
-	module_put(THIS_MODULE);
-}
-
 static void
 firmware_class_timeout(u_long data)
 {
@@ -379,8 +438,8 @@ static int fw_register_device(struct device **dev_p, const char *fw_name,
 			      struct device *device)
 {
 	int retval;
-	struct firmware_priv *fw_priv = kzalloc(sizeof(*fw_priv),
-						GFP_KERNEL);
+	struct firmware_priv *fw_priv =
+		kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL);
 	struct device *f_dev = kzalloc(sizeof(*f_dev), GFP_KERNEL);
 
 	*dev_p = NULL;
@@ -391,16 +450,9 @@ static int fw_register_device(struct device **dev_p, const char *fw_name,
 		goto error_kfree;
 	}
 
+	strcpy(fw_priv->fw_id, fw_name);
 	init_completion(&fw_priv->completion);
 	fw_priv->attr_data = firmware_attr_data_tmpl;
-	fw_priv->fw_id = kstrdup(fw_name, GFP_KERNEL);
-	if (!fw_priv->fw_id) {
-		dev_err(device, "%s: Firmware name allocation failed\n",
-			__func__);
-		retval = -ENOMEM;
-		goto error_kfree;
-	}
-
 	fw_priv->timeout.function = firmware_class_timeout;
 	fw_priv->timeout.data = (u_long) fw_priv;
 	init_timer(&fw_priv->timeout);
@@ -427,7 +479,7 @@ error_kfree:
 
 static int fw_setup_device(struct firmware *fw, struct device **dev_p,
 			   const char *fw_name, struct device *device,
-			   int uevent)
+			   int uevent, bool nowait)
 {
 	struct device *f_dev;
 	struct firmware_priv *fw_priv;
@@ -443,6 +495,8 @@ static int fw_setup_device(struct firmware *fw, struct device **dev_p,
 
 	fw_priv = dev_get_drvdata(f_dev);
 
+	fw_priv->nowait = nowait;
+
 	fw_priv->fw = fw;
 	sysfs_bin_attr_init(&fw_priv->attr_data);
 	retval = sysfs_create_bin_file(&f_dev->kobj, &fw_priv->attr_data);
@@ -470,12 +524,11 @@ out:
 
 static int
 _request_firmware(const struct firmware **firmware_p, const char *name,
-		 struct device *device, int uevent)
+		 struct device *device, int uevent, bool nowait)
 {
 	struct device *f_dev;
 	struct firmware_priv *fw_priv;
 	struct firmware *firmware;
-	struct builtin_fw *builtin;
 	int retval;
 
 	if (!firmware_p)
@@ -489,21 +542,16 @@ _request_firmware(const struct firmware **firmware_p, const char *name,
 		goto out;
 	}
 
-	for (builtin = __start_builtin_fw; builtin != __end_builtin_fw;
-	     builtin++) {
-		if (strcmp(name, builtin->name))
-			continue;
-		dev_info(device, "firmware: using built-in firmware %s\n",
-			 name);
-		firmware->size = builtin->size;
-		firmware->data = builtin->data;
+	if (fw_get_builtin_firmware(firmware, name)) {
+		dev_dbg(device, "firmware: using built-in firmware %s\n", name);
 		return 0;
 	}
 
 	if (uevent)
-		dev_info(device, "firmware: requesting %s\n", name);
+		dev_dbg(device, "firmware: requesting %s\n", name);
 
-	retval = fw_setup_device(firmware, &f_dev, name, device, uevent);
+	retval = fw_setup_device(firmware, &f_dev, name, device,
+				 uevent, nowait);
 	if (retval)
 		goto error_kfree_fw;
 
@@ -560,26 +608,18 @@ request_firmware(const struct firmware **firmware_p, const char *name,
                  struct device *device)
 {
         int uevent = 1;
-        return _request_firmware(firmware_p, name, device, uevent);
+        return _request_firmware(firmware_p, name, device, uevent, false);
 }
 
 /**
  * release_firmware: - release the resource associated with a firmware image
  * @fw: firmware resource to release
  **/
-void
-release_firmware(const struct firmware *fw)
+void release_firmware(const struct firmware *fw)
 {
-	struct builtin_fw *builtin;
-
 	if (fw) {
-		for (builtin = __start_builtin_fw; builtin != __end_builtin_fw;
-		     builtin++) {
-			if (fw->data == builtin->data)
-				goto free_fw;
-		}
-		vfree(fw->data);
-	free_fw:
+		if (!fw_is_builtin_firmware(fw))
+			firmware_free_data(fw);
 		kfree(fw);
 	}
 }
@@ -606,7 +646,7 @@ request_firmware_work_func(void *arg)
 		return 0;
 	}
 	ret = _request_firmware(&fw, fw_work->name, fw_work->device,
-		fw_work->uevent);
+		fw_work->uevent, true);
 
 	fw_work->cont(fw, fw_work->context);
 
@@ -670,26 +710,12 @@ request_firmware_nowait(
 	return 0;
 }
 
-static int __init
-firmware_class_init(void)
+static int __init firmware_class_init(void)
 {
-	int error;
-	error = class_register(&firmware_class);
-	if (error) {
-		printk(KERN_ERR "%s: class_register failed\n", __func__);
-		return error;
-	}
-	error = class_create_file(&firmware_class, &class_attr_timeout);
-	if (error) {
-		printk(KERN_ERR "%s: class_create_file failed\n",
-		       __func__);
-		class_unregister(&firmware_class);
-	}
-	return error;
-
+	return class_register(&firmware_class);
 }
-static void __exit
-firmware_class_exit(void)
+
+static void __exit firmware_class_exit(void)
 {
 	class_unregister(&firmware_class);
 }

drivers/base/module.c

@@ -15,12 +15,10 @@ static char *make_driver_name(struct device_driver *drv)
 {
 	char *driver_name;
 
-	driver_name = kmalloc(strlen(drv->name) + strlen(drv->bus->name) + 2,
-			      GFP_KERNEL);
+	driver_name = kasprintf(GFP_KERNEL, "%s:%s", drv->bus->name, drv->name);
 	if (!driver_name)
 		return NULL;
 
-	sprintf(driver_name, "%s:%s", drv->bus->name, drv->name);
 	return driver_name;
 }
 

drivers/base/platform.c

@@ -735,7 +735,7 @@ static void platform_pm_complete(struct device *dev)
 
 #ifdef CONFIG_SUSPEND
 
-static int platform_pm_suspend(struct device *dev)
+int __weak platform_pm_suspend(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -753,7 +753,7 @@ static int platform_pm_suspend(struct device *dev)
 	return ret;
 }
 
-static int platform_pm_suspend_noirq(struct device *dev)
+int __weak platform_pm_suspend_noirq(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -769,7 +769,7 @@ static int platform_pm_suspend_noirq(struct device *dev)
 	return ret;
 }
 
-static int platform_pm_resume(struct device *dev)
+int __weak platform_pm_resume(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -787,7 +787,7 @@ static int platform_pm_resume(struct device *dev)
 	return ret;
 }
 
-static int platform_pm_resume_noirq(struct device *dev)
+int __weak platform_pm_resume_noirq(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;

drivers/block/loop.c

@@ -835,6 +835,8 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
 
 	set_capacity(lo->lo_disk, size);
 	bd_set_size(bdev, size << 9);
+	/* let user-space know about the new size */
+	kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
 
 	set_blocksize(bdev, lo_blocksize);
 
@@ -858,6 +860,7 @@ out_clr:
 	set_capacity(lo->lo_disk, 0);
 	invalidate_bdev(bdev);
 	bd_set_size(bdev, 0);
+	kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
 	mapping_set_gfp_mask(mapping, lo->old_gfp_mask);
 	lo->lo_state = Lo_unbound;
  out_putf:
@@ -944,8 +947,11 @@ static int loop_clr_fd(struct loop_device *lo, struct block_device *bdev)
 	if (bdev)
 		invalidate_bdev(bdev);
 	set_capacity(lo->lo_disk, 0);
-	if (bdev)
+	if (bdev) {
 		bd_set_size(bdev, 0);
+		/* let user-space know about this change */
+		kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
+	}
 	mapping_set_gfp_mask(filp->f_mapping, gfp);
 	lo->lo_state = Lo_unbound;
 	/* This is safe: open() is still holding a reference. */
@@ -1189,6 +1195,8 @@ static int loop_set_capacity(struct loop_device *lo, struct block_device *bdev)
 	sz <<= 9;
 	mutex_lock(&bdev->bd_mutex);
 	bd_set_size(bdev, sz);
+	/* let user-space know about the new size */
+	kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
 	mutex_unlock(&bdev->bd_mutex);
 
  out:

drivers/firmware/dcdbas.c

@@ -149,7 +149,7 @@ static ssize_t smi_data_buf_size_store(struct device *dev,
 	return count;
 }
 
-static ssize_t smi_data_read(struct kobject *kobj,
+static ssize_t smi_data_read(struct file *filp, struct kobject *kobj,
 			     struct bin_attribute *bin_attr,
 			     char *buf, loff_t pos, size_t count)
 {
@@ -162,7 +162,7 @@ static ssize_t smi_data_read(struct kobject *kobj,
 	return ret;
 }
 
-static ssize_t smi_data_write(struct kobject *kobj,
+static ssize_t smi_data_write(struct file *filp, struct kobject *kobj,
 			      struct bin_attribute *bin_attr,
 			      char *buf, loff_t pos, size_t count)
 {

drivers/firmware/dell_rbu.c

@@ -522,7 +522,7 @@ static ssize_t read_rbu_mono_data(char *buffer, loff_t pos, size_t count)
 			rbu_data.image_update_buffer, rbu_data.bios_image_size);
 }
 
-static ssize_t read_rbu_data(struct kobject *kobj,
+static ssize_t read_rbu_data(struct file *filp, struct kobject *kobj,
 			     struct bin_attribute *bin_attr,
 			     char *buffer, loff_t pos, size_t count)
 {
@@ -576,7 +576,7 @@ static void callbackfn_rbu(const struct firmware *fw, void *context)
 	release_firmware(fw);
 }
 
-static ssize_t read_rbu_image_type(struct kobject *kobj,
+static ssize_t read_rbu_image_type(struct file *filp, struct kobject *kobj,
 				   struct bin_attribute *bin_attr,
 				   char *buffer, loff_t pos, size_t count)
 {
@@ -586,7 +586,7 @@ static ssize_t read_rbu_image_type(struct kobject *kobj,
 	return size;
 }
 
-static ssize_t write_rbu_image_type(struct kobject *kobj,
+static ssize_t write_rbu_image_type(struct file *filp, struct kobject *kobj,
 				    struct bin_attribute *bin_attr,
 				    char *buffer, loff_t pos, size_t count)
 {
@@ -647,7 +647,7 @@ static ssize_t write_rbu_image_type(struct kobject *kobj,
 	return rc;
 }
 
-static ssize_t read_rbu_packet_size(struct kobject *kobj,
+static ssize_t read_rbu_packet_size(struct file *filp, struct kobject *kobj,
 				    struct bin_attribute *bin_attr,
 				    char *buffer, loff_t pos, size_t count)
 {
@@ -660,7 +660,7 @@ static ssize_t read_rbu_packet_size(struct kobject *kobj,
 	return size;
 }
 
-static ssize_t write_rbu_packet_size(struct kobject *kobj,
+static ssize_t write_rbu_packet_size(struct file *filp, struct kobject *kobj,
 				     struct bin_attribute *bin_attr,
 				     char *buffer, loff_t pos, size_t count)
 {

drivers/firmware/efivars.c

@@ -402,7 +402,7 @@ efivar_unregister(struct efivar_entry *var)
 }
 
 
-static ssize_t efivar_create(struct kobject *kobj,
+static ssize_t efivar_create(struct file *filp, struct kobject *kobj,
 			     struct bin_attribute *bin_attr,
 			     char *buf, loff_t pos, size_t count)
 {
@@ -461,7 +461,7 @@ static ssize_t efivar_create(struct kobject *kobj,
 	return count;
 }
 
-static ssize_t efivar_delete(struct kobject *kobj,
+static ssize_t efivar_delete(struct file *filp, struct kobject *kobj,
 			     struct bin_attribute *bin_attr,
 			     char *buf, loff_t pos, size_t count)
 {

drivers/gpio/gpiolib.c

@@ -399,7 +399,7 @@ static int gpio_setup_irq(struct gpio_desc *desc, struct device *dev,
 			goto free_id;
 		}
 
-		pdesc->value_sd = sysfs_get_dirent(dev->kobj.sd, "value");
+		pdesc->value_sd = sysfs_get_dirent(dev->kobj.sd, NULL, "value");
 		if (!pdesc->value_sd) {
 			ret = -ENODEV;
 			goto free_id;

drivers/gpu/drm/drm_sysfs.c

@@ -193,8 +193,9 @@ static ssize_t enabled_show(struct device *device,
 			"disabled");
 }
 
-static ssize_t edid_show(struct kobject *kobj, struct bin_attribute *attr,
-			 char *buf, loff_t off, size_t count)
+static ssize_t edid_show(struct file *filp, struct kobject *kobj,
+			 struct bin_attribute *attr, char *buf, loff_t off,
+			 size_t count)
 {
 	struct device *connector_dev = container_of(kobj, struct device, kobj);
 	struct drm_connector *connector = to_drm_connector(connector_dev);

drivers/md/bitmap.c

@@ -1678,9 +1678,9 @@ int bitmap_create(mddev_t *mddev)
 
 	bitmap->mddev = mddev;
 
-	bm = sysfs_get_dirent(mddev->kobj.sd, "bitmap");
+	bm = sysfs_get_dirent(mddev->kobj.sd, NULL, "bitmap");
 	if (bm) {
-		bitmap->sysfs_can_clear = sysfs_get_dirent(bm, "can_clear");
+		bitmap->sysfs_can_clear = sysfs_get_dirent(bm, NULL, "can_clear");
 		sysfs_put(bm);
 	} else
 		bitmap->sysfs_can_clear = NULL;

drivers/md/md.c

@@ -1766,7 +1766,7 @@ static int bind_rdev_to_array(mdk_rdev_t * rdev, mddev_t * mddev)
 		kobject_del(&rdev->kobj);
 		goto fail;
 	}
-	rdev->sysfs_state = sysfs_get_dirent(rdev->kobj.sd, "state");
+	rdev->sysfs_state = sysfs_get_dirent(rdev->kobj.sd, NULL, "state");
 
 	list_add_rcu(&rdev->same_set, &mddev->disks);
 	bd_claim_by_disk(rdev->bdev, rdev->bdev->bd_holder, mddev->gendisk);
@@ -4189,7 +4189,7 @@ static int md_alloc(dev_t dev, char *name)
 	mutex_unlock(&disks_mutex);
 	if (!error) {
 		kobject_uevent(&mddev->kobj, KOBJ_ADD);
-		mddev->sysfs_state = sysfs_get_dirent(mddev->kobj.sd, "array_state");
+		mddev->sysfs_state = sysfs_get_dirent(mddev->kobj.sd, NULL, "array_state");
 	}
 	mddev_put(mddev);
 	return error;
@@ -4398,7 +4398,7 @@ static int do_md_run(mddev_t * mddev)
 			printk(KERN_WARNING
 			       "md: cannot register extra attributes for %s\n",
 			       mdname(mddev));
-		mddev->sysfs_action = sysfs_get_dirent(mddev->kobj.sd, "sync_action");
+		mddev->sysfs_action = sysfs_get_dirent(mddev->kobj.sd, NULL, "sync_action");
 	} else if (mddev->ro == 2) /* auto-readonly not meaningful */
 		mddev->ro = 0;
 

drivers/misc/c2port/core.c

@@ -707,7 +707,7 @@ static ssize_t __c2port_read_flash_data(struct c2port_device *dev,
 	return nread;
 }
 
-static ssize_t c2port_read_flash_data(struct kobject *kobj,
+static ssize_t c2port_read_flash_data(struct file *filp, struct kobject *kobj,
 				struct bin_attribute *attr,
 				char *buffer, loff_t offset, size_t count)
 {
@@ -824,7 +824,7 @@ static ssize_t __c2port_write_flash_data(struct c2port_device *dev,
 	return nwrite;
 }
 
-static ssize_t c2port_write_flash_data(struct kobject *kobj,
+static ssize_t c2port_write_flash_data(struct file *filp, struct kobject *kobj,
 				struct bin_attribute *attr,
 				char *buffer, loff_t offset, size_t count)
 {

drivers/misc/ds1682.c

@@ -140,7 +140,8 @@ static const struct attribute_group ds1682_group = {
 /*
  * User data attribute
  */
-static ssize_t ds1682_eeprom_read(struct kobject *kobj, struct bin_attribute *attr,
+static ssize_t ds1682_eeprom_read(struct file *filp, struct kobject *kobj,
+				  struct bin_attribute *attr,
 				  char *buf, loff_t off, size_t count)
 {
 	struct i2c_client *client = kobj_to_i2c_client(kobj);
@@ -163,7 +164,8 @@ static ssize_t ds1682_eeprom_read(struct kobject *kobj, struct bin_attribute *at
 	return count;
 }
 
-static ssize_t ds1682_eeprom_write(struct kobject *kobj, struct bin_attribute *attr,
+static ssize_t ds1682_eeprom_write(struct file *filp, struct kobject *kobj,
+				   struct bin_attribute *attr,
 				   char *buf, loff_t off, size_t count)
 {
 	struct i2c_client *client = kobj_to_i2c_client(kobj);

drivers/misc/eeprom/at24.c

@@ -274,7 +274,8 @@ static ssize_t at24_read(struct at24_data *at24,
 	return retval;
 }
 
-static ssize_t at24_bin_read(struct kobject *kobj, struct bin_attribute *attr,
+static ssize_t at24_bin_read(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct at24_data *at24;
@@ -395,7 +396,8 @@ static ssize_t at24_write(struct at24_data *at24, const char *buf, loff_t off,
 	return retval;
 }
 
-static ssize_t at24_bin_write(struct kobject *kobj, struct bin_attribute *attr,
+static ssize_t at24_bin_write(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct at24_data *at24;

drivers/misc/eeprom/at25.c

@@ -126,7 +126,8 @@ at25_ee_read(
 }
 
 static ssize_t
-at25_bin_read(struct kobject *kobj, struct bin_attribute *bin_attr,
+at25_bin_read(struct file *filp, struct kobject *kobj,
+	      struct bin_attribute *bin_attr,
 	      char *buf, loff_t off, size_t count)
 {
 	struct device		*dev;
@@ -253,7 +254,8 @@ at25_ee_write(struct at25_data *at25, const char *buf, loff_t off,
 }
 
 static ssize_t
-at25_bin_write(struct kobject *kobj, struct bin_attribute *bin_attr,
+at25_bin_write(struct file *filp, struct kobject *kobj,
+	       struct bin_attribute *bin_attr,
 	       char *buf, loff_t off, size_t count)
 {
 	struct device		*dev;

drivers/misc/eeprom/eeprom.c

@@ -81,7 +81,8 @@ exit:
 	mutex_unlock(&data->update_lock);
 }
 
-static ssize_t eeprom_read(struct kobject *kobj, struct bin_attribute *bin_attr,
+static ssize_t eeprom_read(struct file *filp, struct kobject *kobj,
+			   struct bin_attribute *bin_attr,
 			   char *buf, loff_t off, size_t count)
 {
 	struct i2c_client *client = to_i2c_client(container_of(kobj, struct device, kobj));

drivers/misc/eeprom/max6875.c

@@ -107,7 +107,7 @@ exit_up:
 	mutex_unlock(&data->update_lock);
 }
 
-static ssize_t max6875_read(struct kobject *kobj,
+static ssize_t max6875_read(struct file *filp, struct kobject *kobj,
 			    struct bin_attribute *bin_attr,
 			    char *buf, loff_t off, size_t count)
 {

drivers/net/mlx4/mlx4.h

@@ -40,6 +40,7 @@
 #include <linux/mutex.h>
 #include <linux/radix-tree.h>
 #include <linux/timer.h>
+#include <linux/semaphore.h>
 #include <linux/workqueue.h>
 
 #include <linux/mlx4/device.h>

drivers/net/netxen/netxen_nic_main.c

@@ -2560,7 +2560,8 @@ netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
 }
 
 static ssize_t
-netxen_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
+netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
@@ -2587,7 +2588,8 @@ netxen_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
 }
 
 static ssize_t
-netxen_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
+netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
@@ -2627,7 +2629,8 @@ netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
 }
 
 static ssize_t
-netxen_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
+netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
@@ -2647,7 +2650,7 @@ netxen_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
 	return size;
 }
 
-static ssize_t netxen_sysfs_write_mem(struct kobject *kobj,
+static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t offset, size_t size)
 {

drivers/net/qlcnic/qlcnic_main.c

@@ -2464,7 +2464,8 @@ qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
 }
 
 static ssize_t
-qlcnic_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
+qlcnic_sysfs_read_crb(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
@@ -2488,7 +2489,8 @@ qlcnic_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
 }
 
 static ssize_t
-qlcnic_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
+qlcnic_sysfs_write_crb(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
@@ -2525,7 +2527,8 @@ qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
 }
 
 static ssize_t
-qlcnic_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
+qlcnic_sysfs_read_mem(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
@@ -2546,7 +2549,8 @@ qlcnic_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
 }
 
 static ssize_t
-qlcnic_sysfs_write_mem(struct kobject *kobj, struct bin_attribute *attr,
+qlcnic_sysfs_write_mem(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t offset, size_t size)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);

drivers/pci/hotplug/acpiphp_ibm.c

@@ -108,7 +108,7 @@ static int ibm_set_attention_status(struct hotplug_slot *slot, u8 status);
 static int ibm_get_attention_status(struct hotplug_slot *slot, u8 *status);
 static void ibm_handle_events(acpi_handle handle, u32 event, void *context);
 static int ibm_get_table_from_acpi(char **bufp);
-static ssize_t ibm_read_apci_table(struct kobject *kobj,
+static ssize_t ibm_read_apci_table(struct file *filp, struct kobject *kobj,
 				   struct bin_attribute *bin_attr,
 				   char *buffer, loff_t pos, size_t size);
 static acpi_status __init ibm_find_acpi_device(acpi_handle handle,
@@ -351,6 +351,7 @@ read_table_done:
 
 /**
  * ibm_read_apci_table - callback for the sysfs apci_table file
+ * @filp: the open sysfs file
  * @kobj: the kobject this binary attribute is a part of
  * @bin_attr: struct bin_attribute for this file
  * @buffer: the kernel space buffer to fill
@@ -364,7 +365,7 @@ read_table_done:
  * things get really tricky here...
  * our solution is to only allow reading the table in all at once.
  */
-static ssize_t ibm_read_apci_table(struct kobject *kobj,
+static ssize_t ibm_read_apci_table(struct file *filp, struct kobject *kobj,
 				   struct bin_attribute *bin_attr,
 				   char *buffer, loff_t pos, size_t size)
 {

drivers/pci/pci-sysfs.c

@@ -21,6 +21,7 @@
 #include <linux/stat.h>
 #include <linux/topology.h>
 #include <linux/mm.h>
+#include <linux/fs.h>
 #include <linux/capability.h>
 #include <linux/pci-aspm.h>
 #include <linux/slab.h>
@@ -357,7 +358,8 @@ boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf)
 struct device_attribute vga_attr = __ATTR_RO(boot_vga);
 
 static ssize_t
-pci_read_config(struct kobject *kobj, struct bin_attribute *bin_attr,
+pci_read_config(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *bin_attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj));
@@ -366,7 +368,7 @@ pci_read_config(struct kobject *kobj, struct bin_attribute *bin_attr,
 	u8 *data = (u8*) buf;
 
 	/* Several chips lock up trying to read undefined config space */
-	if (capable(CAP_SYS_ADMIN)) {
+	if (cap_raised(filp->f_cred->cap_effective, CAP_SYS_ADMIN)) {
 		size = dev->cfg_size;
 	} else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
 		size = 128;
@@ -430,7 +432,8 @@ pci_read_config(struct kobject *kobj, struct bin_attribute *bin_attr,
 }
 
 static ssize_t
-pci_write_config(struct kobject *kobj, struct bin_attribute *bin_attr,
+pci_write_config(struct file* filp, struct kobject *kobj,
+		 struct bin_attribute *bin_attr,
 		 char *buf, loff_t off, size_t count)
 {
 	struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj));
@@ -487,7 +490,8 @@ pci_write_config(struct kobject *kobj, struct bin_attribute *bin_attr,
 }
 
 static ssize_t
-read_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr,
+read_vpd_attr(struct file *filp, struct kobject *kobj,
+	      struct bin_attribute *bin_attr,
 	      char *buf, loff_t off, size_t count)
 {
 	struct pci_dev *dev =
@@ -502,7 +506,8 @@ read_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr,
 }
 
 static ssize_t
-write_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr,
+write_vpd_attr(struct file *filp, struct kobject *kobj,
+	       struct bin_attribute *bin_attr,
 	       char *buf, loff_t off, size_t count)
 {
 	struct pci_dev *dev =
@@ -519,6 +524,7 @@ write_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr,
 #ifdef HAVE_PCI_LEGACY
 /**
  * pci_read_legacy_io - read byte(s) from legacy I/O port space
+ * @filp: open sysfs file
  * @kobj: kobject corresponding to file to read from
  * @bin_attr: struct bin_attribute for this file
  * @buf: buffer to store results
@@ -529,7 +535,8 @@ write_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr,
  * callback routine (pci_legacy_read).
  */
 static ssize_t
-pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
+pci_read_legacy_io(struct file *filp, struct kobject *kobj,
+		   struct bin_attribute *bin_attr,
 		   char *buf, loff_t off, size_t count)
 {
         struct pci_bus *bus = to_pci_bus(container_of(kobj,
@@ -545,6 +552,7 @@ pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
 
 /**
  * pci_write_legacy_io - write byte(s) to legacy I/O port space
+ * @filp: open sysfs file
  * @kobj: kobject corresponding to file to read from
  * @bin_attr: struct bin_attribute for this file
  * @buf: buffer containing value to be written
@@ -555,7 +563,8 @@ pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
  * callback routine (pci_legacy_write).
  */
 static ssize_t
-pci_write_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
+pci_write_legacy_io(struct file *filp, struct kobject *kobj,
+		    struct bin_attribute *bin_attr,
 		    char *buf, loff_t off, size_t count)
 {
         struct pci_bus *bus = to_pci_bus(container_of(kobj,
@@ -570,6 +579,7 @@ pci_write_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
 
 /**
  * pci_mmap_legacy_mem - map legacy PCI memory into user memory space
+ * @filp: open sysfs file
  * @kobj: kobject corresponding to device to be mapped
  * @attr: struct bin_attribute for this file
  * @vma: struct vm_area_struct passed to mmap
@@ -579,7 +589,8 @@ pci_write_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
  * memory space.
  */
 static int
-pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr,
+pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj,
+		    struct bin_attribute *attr,
                     struct vm_area_struct *vma)
 {
         struct pci_bus *bus = to_pci_bus(container_of(kobj,
@@ -591,6 +602,7 @@ pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr,
 
 /**
  * pci_mmap_legacy_io - map legacy PCI IO into user memory space
+ * @filp: open sysfs file
  * @kobj: kobject corresponding to device to be mapped
  * @attr: struct bin_attribute for this file
  * @vma: struct vm_area_struct passed to mmap
@@ -600,7 +612,8 @@ pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr,
  * memory space. Returns -ENOSYS if the operation isn't supported
  */
 static int
-pci_mmap_legacy_io(struct kobject *kobj, struct bin_attribute *attr,
+pci_mmap_legacy_io(struct file *filp, struct kobject *kobj,
+		   struct bin_attribute *attr,
 		   struct vm_area_struct *vma)
 {
         struct pci_bus *bus = to_pci_bus(container_of(kobj,
@@ -750,14 +763,16 @@ pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
 }
 
 static int
-pci_mmap_resource_uc(struct kobject *kobj, struct bin_attribute *attr,
+pci_mmap_resource_uc(struct file *filp, struct kobject *kobj,
+		     struct bin_attribute *attr,
 		     struct vm_area_struct *vma)
 {
 	return pci_mmap_resource(kobj, attr, vma, 0);
 }
 
 static int
-pci_mmap_resource_wc(struct kobject *kobj, struct bin_attribute *attr,
+pci_mmap_resource_wc(struct file *filp, struct kobject *kobj,
+		     struct bin_attribute *attr,
 		     struct vm_area_struct *vma)
 {
 	return pci_mmap_resource(kobj, attr, vma, 1);
@@ -861,6 +876,7 @@ void __weak pci_remove_resource_files(struct pci_dev *dev) { return; }
 
 /**
  * pci_write_rom - used to enable access to the PCI ROM display
+ * @filp: sysfs file
  * @kobj: kernel object handle
  * @bin_attr: struct bin_attribute for this file
  * @buf: user input
@@ -870,7 +886,8 @@ void __weak pci_remove_resource_files(struct pci_dev *dev) { return; }
  * writing anything except 0 enables it
  */
 static ssize_t
-pci_write_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
+pci_write_rom(struct file *filp, struct kobject *kobj,
+	      struct bin_attribute *bin_attr,
 	      char *buf, loff_t off, size_t count)
 {
 	struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj));
@@ -885,6 +902,7 @@ pci_write_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
 
 /**
  * pci_read_rom - read a PCI ROM
+ * @filp: sysfs file
  * @kobj: kernel object handle
  * @bin_attr: struct bin_attribute for this file
  * @buf: where to put the data we read from the ROM
@@ -895,7 +913,8 @@ pci_write_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
  * device corresponding to @kobj.
  */
 static ssize_t
-pci_read_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
+pci_read_rom(struct file *filp, struct kobject *kobj,
+	     struct bin_attribute *bin_attr,
 	     char *buf, loff_t off, size_t count)
 {
 	struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj));

drivers/pcmcia/cistpl.c

@@ -1531,7 +1531,7 @@ static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf,
 }
 
 
-static ssize_t pccard_show_cis(struct kobject *kobj,
+static ssize_t pccard_show_cis(struct file *filp, struct kobject *kobj,
 			       struct bin_attribute *bin_attr,
 			       char *buf, loff_t off, size_t count)
 {
@@ -1562,7 +1562,7 @@ static ssize_t pccard_show_cis(struct kobject *kobj,
 }
 
 
-static ssize_t pccard_store_cis(struct kobject *kobj,
+static ssize_t pccard_store_cis(struct file *filp, struct kobject *kobj,
 				struct bin_attribute *bin_attr,
 				char *buf, loff_t off, size_t count)
 {

drivers/power/olpc_battery.c

@@ -354,7 +354,7 @@ static enum power_supply_property olpc_bat_props[] = {
 #define EEPROM_END	0x80
 #define EEPROM_SIZE	(EEPROM_END - EEPROM_START)
 
-static ssize_t olpc_bat_eeprom_read(struct kobject *kobj,
+static ssize_t olpc_bat_eeprom_read(struct file *filp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf, loff_t off, size_t count)
 {
 	uint8_t ec_byte;

drivers/rapidio/rio-sysfs.c

@@ -68,7 +68,8 @@ struct device_attribute rio_dev_attrs[] = {
 };
 
 static ssize_t
-rio_read_config(struct kobject *kobj, struct bin_attribute *bin_attr,
+rio_read_config(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *bin_attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct rio_dev *dev =
@@ -139,7 +140,8 @@ rio_read_config(struct kobject *kobj, struct bin_attribute *bin_attr,
 }
 
 static ssize_t
-rio_write_config(struct kobject *kobj, struct bin_attribute *bin_attr,
+rio_write_config(struct file *filp, struct kobject *kobj,
+		 struct bin_attribute *bin_attr,
 		 char *buf, loff_t off, size_t count)
 {
 	struct rio_dev *dev =

drivers/rtc/rtc-cmos.c

@@ -519,7 +519,8 @@ static const struct rtc_class_ops cmos_rtc_ops = {
 #define NVRAM_OFFSET	(RTC_REG_D + 1)
 
 static ssize_t
-cmos_nvram_read(struct kobject *kobj, struct bin_attribute *attr,
+cmos_nvram_read(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count)
 {
 	int	retval;
@@ -547,7 +548,8 @@ cmos_nvram_read(struct kobject *kobj, struct bin_attribute *attr,
 }
 
 static ssize_t
-cmos_nvram_write(struct kobject *kobj, struct bin_attribute *attr,
+cmos_nvram_write(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct cmos_rtc	*cmos;

drivers/rtc/rtc-ds1305.c

@@ -542,7 +542,8 @@ static void msg_init(struct spi_message *m, struct spi_transfer *x,
 }
 
 static ssize_t
-ds1305_nvram_read(struct kobject *kobj, struct bin_attribute *attr,
+ds1305_nvram_read(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct spi_device	*spi;
@@ -572,7 +573,8 @@ ds1305_nvram_read(struct kobject *kobj, struct bin_attribute *attr,
 }
 
 static ssize_t
-ds1305_nvram_write(struct kobject *kobj, struct bin_attribute *attr,
+ds1305_nvram_write(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct spi_device	*spi;

drivers/rtc/rtc-ds1307.c

@@ -556,7 +556,8 @@ static const struct rtc_class_ops ds13xx_rtc_ops = {
 #define NVRAM_SIZE	56
 
 static ssize_t
-ds1307_nvram_read(struct kobject *kobj, struct bin_attribute *attr,
+ds1307_nvram_read(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct i2c_client	*client;
@@ -580,7 +581,8 @@ ds1307_nvram_read(struct kobject *kobj, struct bin_attribute *attr,
 }
 
 static ssize_t
-ds1307_nvram_write(struct kobject *kobj, struct bin_attribute *attr,
+ds1307_nvram_write(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct i2c_client	*client;

drivers/rtc/rtc-ds1511.c

@@ -423,8 +423,9 @@ static const struct rtc_class_ops ds1511_rtc_ops = {
 };
 
  static ssize_t
-ds1511_nvram_read(struct kobject *kobj, struct bin_attribute *ba,
-				char *buf, loff_t pos, size_t size)
+ds1511_nvram_read(struct file *filp, struct kobject *kobj,
+		  struct bin_attribute *ba,
+		  char *buf, loff_t pos, size_t size)
 {
 	ssize_t count;
 
@@ -452,8 +453,9 @@ ds1511_nvram_read(struct kobject *kobj, struct bin_attribute *ba,
 }
 
  static ssize_t
-ds1511_nvram_write(struct kobject *kobj, struct bin_attribute *bin_attr,
-				char *buf, loff_t pos, size_t size)
+ds1511_nvram_write(struct file *filp, struct kobject *kobj,
+		   struct bin_attribute *bin_attr,
+		   char *buf, loff_t pos, size_t size)
 {
 	ssize_t count;
 

drivers/rtc/rtc-ds1553.c

@@ -252,7 +252,7 @@ static const struct rtc_class_ops ds1553_rtc_ops = {
 	.update_irq_enable	= ds1553_rtc_update_irq_enable,
 };
 
-static ssize_t ds1553_nvram_read(struct kobject *kobj,
+static ssize_t ds1553_nvram_read(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *bin_attr,
 				 char *buf, loff_t pos, size_t size)
 {
@@ -267,7 +267,7 @@ static ssize_t ds1553_nvram_read(struct kobject *kobj,
 	return count;
 }
 
-static ssize_t ds1553_nvram_write(struct kobject *kobj,
+static ssize_t ds1553_nvram_write(struct file *filp, struct kobject *kobj,
 				  struct bin_attribute *bin_attr,
 				  char *buf, loff_t pos, size_t size)
 {

drivers/rtc/rtc-ds1742.c

@@ -128,7 +128,7 @@ static const struct rtc_class_ops ds1742_rtc_ops = {
 	.set_time	= ds1742_rtc_set_time,
 };
 
-static ssize_t ds1742_nvram_read(struct kobject *kobj,
+static ssize_t ds1742_nvram_read(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *bin_attr,
 				 char *buf, loff_t pos, size_t size)
 {
@@ -143,7 +143,7 @@ static ssize_t ds1742_nvram_read(struct kobject *kobj,
 	return count;
 }
 
-static ssize_t ds1742_nvram_write(struct kobject *kobj,
+static ssize_t ds1742_nvram_write(struct file *filp, struct kobject *kobj,
 				  struct bin_attribute *bin_attr,
 				  char *buf, loff_t pos, size_t size)
 {

drivers/rtc/rtc-m48t59.c

@@ -343,7 +343,7 @@ static const struct rtc_class_ops m48t02_rtc_ops = {
 	.set_time	= m48t59_rtc_set_time,
 };
 
-static ssize_t m48t59_nvram_read(struct kobject *kobj,
+static ssize_t m48t59_nvram_read(struct file *filp, struct kobject *kobj,
 				struct bin_attribute *bin_attr,
 				char *buf, loff_t pos, size_t size)
 {
@@ -363,7 +363,7 @@ static ssize_t m48t59_nvram_read(struct kobject *kobj,
 	return cnt;
 }
 
-static ssize_t m48t59_nvram_write(struct kobject *kobj,
+static ssize_t m48t59_nvram_write(struct file *filp, struct kobject *kobj,
 				struct bin_attribute *bin_attr,
 				char *buf, loff_t pos, size_t size)
 {

drivers/rtc/rtc-stk17ta8.c

@@ -244,7 +244,7 @@ static const struct rtc_class_ops stk17ta8_rtc_ops = {
 	.alarm_irq_enable	= stk17ta8_rtc_alarm_irq_enable,
 };
 
-static ssize_t stk17ta8_nvram_read(struct kobject *kobj,
+static ssize_t stk17ta8_nvram_read(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *attr, char *buf,
 				 loff_t pos, size_t size)
 {
@@ -259,7 +259,7 @@ static ssize_t stk17ta8_nvram_read(struct kobject *kobj,
 	return count;
 }
 
-static ssize_t stk17ta8_nvram_write(struct kobject *kobj,
+static ssize_t stk17ta8_nvram_write(struct file *filp, struct kobject *kobj,
 				  struct bin_attribute *attr, char *buf,
 				  loff_t pos, size_t size)
 {

drivers/rtc/rtc-tx4939.c

@@ -188,7 +188,7 @@ static const struct rtc_class_ops tx4939_rtc_ops = {
 	.alarm_irq_enable	= tx4939_rtc_alarm_irq_enable,
 };
 
-static ssize_t tx4939_rtc_nvram_read(struct kobject *kobj,
+static ssize_t tx4939_rtc_nvram_read(struct file *filp, struct kobject *kobj,
 				     struct bin_attribute *bin_attr,
 				     char *buf, loff_t pos, size_t size)
 {
@@ -207,7 +207,7 @@ static ssize_t tx4939_rtc_nvram_read(struct kobject *kobj,
 	return count;
 }
 
-static ssize_t tx4939_rtc_nvram_write(struct kobject *kobj,
+static ssize_t tx4939_rtc_nvram_write(struct file *filp, struct kobject *kobj,
 				      struct bin_attribute *bin_attr,
 				      char *buf, loff_t pos, size_t size)
 {

drivers/s390/cio/chp.c

@@ -135,7 +135,8 @@ static int s390_vary_chpid(struct chp_id chpid, int on)
 /*
  * Channel measurement related functions
  */
-static ssize_t chp_measurement_chars_read(struct kobject *kobj,
+static ssize_t chp_measurement_chars_read(struct file *filp,
+					  struct kobject *kobj,
 					  struct bin_attribute *bin_attr,
 					  char *buf, loff_t off, size_t count)
 {
@@ -182,7 +183,7 @@ static void chp_measurement_copy_block(struct cmg_entry *buf,
 	} while (reference_buf.values[0] != buf->values[0]);
 }
 
-static ssize_t chp_measurement_read(struct kobject *kobj,
+static ssize_t chp_measurement_read(struct file *filp, struct kobject *kobj,
 				    struct bin_attribute *bin_attr,
 				    char *buf, loff_t off, size_t count)
 {

drivers/scsi/3w-sas.c

@@ -98,7 +98,7 @@ static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_res
 /* Functions */
 
 /* This function returns AENs through sysfs */
-static ssize_t twl_sysfs_aen_read(struct kobject *kobj,
+static ssize_t twl_sysfs_aen_read(struct file *filp, struct kobject *kobj,
 				  struct bin_attribute *bin_attr,
 				  char *outbuf, loff_t offset, size_t count)
 {
@@ -129,7 +129,7 @@ static struct bin_attribute twl_sysfs_aen_read_attr = {
 };
 
 /* This function returns driver compatibility info through sysfs */
-static ssize_t twl_sysfs_compat_info(struct kobject *kobj,
+static ssize_t twl_sysfs_compat_info(struct file *filp, struct kobject *kobj,
 				     struct bin_attribute *bin_attr,
 				     char *outbuf, loff_t offset, size_t count)
 {

drivers/scsi/arcmsr/arcmsr_attr.c

@@ -59,7 +59,8 @@
 
 struct device_attribute *arcmsr_host_attrs[];
 
-static ssize_t arcmsr_sysfs_iop_message_read(struct kobject *kobj,
+static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp,
+					     struct kobject *kobj,
 					     struct bin_attribute *bin,
 					     char *buf, loff_t off,
 					     size_t count)
@@ -105,7 +106,8 @@ static ssize_t arcmsr_sysfs_iop_message_read(struct kobject *kobj,
 	return (allxfer_len);
 }
 
-static ssize_t arcmsr_sysfs_iop_message_write(struct kobject *kobj,
+static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
+					      struct kobject *kobj,
 					      struct bin_attribute *bin,
 					      char *buf, loff_t off,
 					      size_t count)
@@ -153,7 +155,8 @@ static ssize_t arcmsr_sysfs_iop_message_write(struct kobject *kobj,
 	}
 }
 
-static ssize_t arcmsr_sysfs_iop_message_clear(struct kobject *kobj,
+static ssize_t arcmsr_sysfs_iop_message_clear(struct file *filp,
+					      struct kobject *kobj,
 					      struct bin_attribute *bin,
 					      char *buf, loff_t off,
 					      size_t count)

drivers/scsi/ibmvscsi/ibmvfc.c

@@ -2919,6 +2919,7 @@ static DEVICE_ATTR(log_level, S_IRUGO | S_IWUSR,
 #ifdef CONFIG_SCSI_IBMVFC_TRACE
 /**
  * ibmvfc_read_trace - Dump the adapter trace
+ * @filp:		open sysfs file
  * @kobj:		kobject struct
  * @bin_attr:	bin_attribute struct
  * @buf:		buffer
@@ -2928,7 +2929,7 @@ static DEVICE_ATTR(log_level, S_IRUGO | S_IWUSR,
  * Return value:
  *	number of bytes printed to buffer
  **/
-static ssize_t ibmvfc_read_trace(struct kobject *kobj,
+static ssize_t ibmvfc_read_trace(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *bin_attr,
 				 char *buf, loff_t off, size_t count)
 {

drivers/scsi/ipr.c

@@ -3120,6 +3120,7 @@ restart:
 #ifdef CONFIG_SCSI_IPR_TRACE
 /**
  * ipr_read_trace - Dump the adapter trace
+ * @filp:		open sysfs file
  * @kobj:		kobject struct
  * @bin_attr:		bin_attribute struct
  * @buf:		buffer
@@ -3129,7 +3130,7 @@ restart:
  * Return value:
  *	number of bytes printed to buffer
  **/
-static ssize_t ipr_read_trace(struct kobject *kobj,
+static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
 			      struct bin_attribute *bin_attr,
 			      char *buf, loff_t off, size_t count)
 {
@@ -3764,6 +3765,7 @@ static struct device_attribute *ipr_ioa_attrs[] = {
 #ifdef CONFIG_SCSI_IPR_DUMP
 /**
  * ipr_read_dump - Dump the adapter
+ * @filp:		open sysfs file
  * @kobj:		kobject struct
  * @bin_attr:		bin_attribute struct
  * @buf:		buffer
@@ -3773,7 +3775,7 @@ static struct device_attribute *ipr_ioa_attrs[] = {
  * Return value:
  *	number of bytes printed to buffer
  **/
-static ssize_t ipr_read_dump(struct kobject *kobj,
+static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
 			     struct bin_attribute *bin_attr,
 			     char *buf, loff_t off, size_t count)
 {
@@ -3927,6 +3929,7 @@ static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
 
 /**
  * ipr_write_dump - Setup dump state of adapter
+ * @filp:		open sysfs file
  * @kobj:		kobject struct
  * @bin_attr:		bin_attribute struct
  * @buf:		buffer
@@ -3936,7 +3939,7 @@ static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
  * Return value:
  *	number of bytes printed to buffer
  **/
-static ssize_t ipr_write_dump(struct kobject *kobj,
+static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
 			      struct bin_attribute *bin_attr,
 			      char *buf, loff_t off, size_t count)
 {

drivers/scsi/lpfc/lpfc_attr.c

@@ -2643,6 +2643,7 @@ static DEVICE_ATTR(lpfc_stat_data_ctrl, S_IRUGO | S_IWUSR,
 
 /**
  * sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute
+ * @filp: sysfs file
  * @kobj: Pointer to the kernel object
  * @bin_attr: Attribute object
  * @buff: Buffer pointer
@@ -2654,7 +2655,8 @@ static DEVICE_ATTR(lpfc_stat_data_ctrl, S_IRUGO | S_IWUSR,
  * applications.
  **/
 static ssize_t
-sysfs_drvr_stat_data_read(struct kobject *kobj, struct bin_attribute *bin_attr,
+sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *bin_attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct device *dev = container_of(kobj, struct device,
@@ -3362,6 +3364,7 @@ struct device_attribute *lpfc_vport_attrs[] = {
 
 /**
  * sysfs_ctlreg_write - Write method for writing to ctlreg
+ * @filp: open sysfs file
  * @kobj: kernel kobject that contains the kernel class device.
  * @bin_attr: kernel attributes passed to us.
  * @buf: contains the data to be written to the adapter IOREG space.
@@ -3379,7 +3382,8 @@ struct device_attribute *lpfc_vport_attrs[] = {
  * value of count, buf contents written
  **/
 static ssize_t
-sysfs_ctlreg_write(struct kobject *kobj, struct bin_attribute *bin_attr,
+sysfs_ctlreg_write(struct file *filp, struct kobject *kobj,
+		   struct bin_attribute *bin_attr,
 		   char *buf, loff_t off, size_t count)
 {
 	size_t buf_off;
@@ -3415,6 +3419,7 @@ sysfs_ctlreg_write(struct kobject *kobj, struct bin_attribute *bin_attr,
 
 /**
  * sysfs_ctlreg_read - Read method for reading from ctlreg
+ * @filp: open sysfs file
  * @kobj: kernel kobject that contains the kernel class device.
  * @bin_attr: kernel attributes passed to us.
  * @buf: if successful contains the data from the adapter IOREG space.
@@ -3431,7 +3436,8 @@ sysfs_ctlreg_write(struct kobject *kobj, struct bin_attribute *bin_attr,
  * value of count, buf contents read
  **/
 static ssize_t
-sysfs_ctlreg_read(struct kobject *kobj, struct bin_attribute *bin_attr,
+sysfs_ctlreg_read(struct file *filp, struct kobject *kobj,
+		  struct bin_attribute *bin_attr,
 		  char *buf, loff_t off, size_t count)
 {
 	size_t buf_off;
@@ -3496,6 +3502,7 @@ sysfs_mbox_idle(struct lpfc_hba *phba)
 
 /**
  * sysfs_mbox_write - Write method for writing information via mbox
+ * @filp: open sysfs file
  * @kobj: kernel kobject that contains the kernel class device.
  * @bin_attr: kernel attributes passed to us.
  * @buf: contains the data to be written to sysfs mbox.
@@ -3516,7 +3523,8 @@ sysfs_mbox_idle(struct lpfc_hba *phba)
  * count number of bytes transferred
  **/
 static ssize_t
-sysfs_mbox_write(struct kobject *kobj, struct bin_attribute *bin_attr,
+sysfs_mbox_write(struct file *filp, struct kobject *kobj,
+		 struct bin_attribute *bin_attr,
 		 char *buf, loff_t off, size_t count)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
@@ -3571,6 +3579,7 @@ sysfs_mbox_write(struct kobject *kobj, struct bin_attribute *bin_attr,
 
 /**
  * sysfs_mbox_read - Read method for reading information via mbox
+ * @filp: open sysfs file
  * @kobj: kernel kobject that contains the kernel class device.
  * @bin_attr: kernel attributes passed to us.
  * @buf: contains the data to be read from sysfs mbox.
@@ -3593,7 +3602,8 @@ sysfs_mbox_write(struct kobject *kobj, struct bin_attribute *bin_attr,
  * count number of bytes transferred
  **/
 static ssize_t
-sysfs_mbox_read(struct kobject *kobj, struct bin_attribute *bin_attr,
+sysfs_mbox_read(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *bin_attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);

drivers/scsi/qla2xxx/qla_attr.c

@@ -16,7 +16,7 @@ static int qla24xx_vport_disable(struct fc_vport *, bool);
 /* SYSFS attributes --------------------------------------------------------- */
 
 static ssize_t
-qla2x00_sysfs_read_fw_dump(struct kobject *kobj,
+qla2x00_sysfs_read_fw_dump(struct file *filp, struct kobject *kobj,
 			   struct bin_attribute *bin_attr,
 			   char *buf, loff_t off, size_t count)
 {
@@ -32,7 +32,7 @@ qla2x00_sysfs_read_fw_dump(struct kobject *kobj,
 }
 
 static ssize_t
-qla2x00_sysfs_write_fw_dump(struct kobject *kobj,
+qla2x00_sysfs_write_fw_dump(struct file *filp, struct kobject *kobj,
 			    struct bin_attribute *bin_attr,
 			    char *buf, loff_t off, size_t count)
 {
@@ -92,7 +92,7 @@ static struct bin_attribute sysfs_fw_dump_attr = {
 };
 
 static ssize_t
-qla2x00_sysfs_read_nvram(struct kobject *kobj,
+qla2x00_sysfs_read_nvram(struct file *filp, struct kobject *kobj,
 			 struct bin_attribute *bin_attr,
 			 char *buf, loff_t off, size_t count)
 {
@@ -111,7 +111,7 @@ qla2x00_sysfs_read_nvram(struct kobject *kobj,
 }
 
 static ssize_t
-qla2x00_sysfs_write_nvram(struct kobject *kobj,
+qla2x00_sysfs_write_nvram(struct file *filp, struct kobject *kobj,
 			  struct bin_attribute *bin_attr,
 			  char *buf, loff_t off, size_t count)
 {
@@ -177,7 +177,7 @@ static struct bin_attribute sysfs_nvram_attr = {
 };
 
 static ssize_t
-qla2x00_sysfs_read_optrom(struct kobject *kobj,
+qla2x00_sysfs_read_optrom(struct file *filp, struct kobject *kobj,
 			  struct bin_attribute *bin_attr,
 			  char *buf, loff_t off, size_t count)
 {
@@ -193,7 +193,7 @@ qla2x00_sysfs_read_optrom(struct kobject *kobj,
 }
 
 static ssize_t
-qla2x00_sysfs_write_optrom(struct kobject *kobj,
+qla2x00_sysfs_write_optrom(struct file *filp, struct kobject *kobj,
 			   struct bin_attribute *bin_attr,
 			   char *buf, loff_t off, size_t count)
 {
@@ -224,7 +224,7 @@ static struct bin_attribute sysfs_optrom_attr = {
 };
 
 static ssize_t
-qla2x00_sysfs_write_optrom_ctl(struct kobject *kobj,
+qla2x00_sysfs_write_optrom_ctl(struct file *filp, struct kobject *kobj,
 			       struct bin_attribute *bin_attr,
 			       char *buf, loff_t off, size_t count)
 {
@@ -387,7 +387,7 @@ static struct bin_attribute sysfs_optrom_ctl_attr = {
 };
 
 static ssize_t
-qla2x00_sysfs_read_vpd(struct kobject *kobj,
+qla2x00_sysfs_read_vpd(struct file *filp, struct kobject *kobj,
 		       struct bin_attribute *bin_attr,
 		       char *buf, loff_t off, size_t count)
 {
@@ -408,7 +408,7 @@ qla2x00_sysfs_read_vpd(struct kobject *kobj,
 }
 
 static ssize_t
-qla2x00_sysfs_write_vpd(struct kobject *kobj,
+qla2x00_sysfs_write_vpd(struct file *filp, struct kobject *kobj,
 			struct bin_attribute *bin_attr,
 			char *buf, loff_t off, size_t count)
 {
@@ -461,7 +461,7 @@ static struct bin_attribute sysfs_vpd_attr = {
 };
 
 static ssize_t
-qla2x00_sysfs_read_sfp(struct kobject *kobj,
+qla2x00_sysfs_read_sfp(struct file *filp, struct kobject *kobj,
 		       struct bin_attribute *bin_attr,
 		       char *buf, loff_t off, size_t count)
 {
@@ -522,7 +522,7 @@ static struct bin_attribute sysfs_sfp_attr = {
 };
 
 static ssize_t
-qla2x00_sysfs_write_reset(struct kobject *kobj,
+qla2x00_sysfs_write_reset(struct file *filp, struct kobject *kobj,
 			struct bin_attribute *bin_attr,
 			char *buf, loff_t off, size_t count)
 {
@@ -592,7 +592,7 @@ static struct bin_attribute sysfs_reset_attr = {
 };
 
 static ssize_t
-qla2x00_sysfs_write_edc(struct kobject *kobj,
+qla2x00_sysfs_write_edc(struct file *filp, struct kobject *kobj,
 			struct bin_attribute *bin_attr,
 			char *buf, loff_t off, size_t count)
 {
@@ -650,7 +650,7 @@ static struct bin_attribute sysfs_edc_attr = {
 };
 
 static ssize_t
-qla2x00_sysfs_write_edc_status(struct kobject *kobj,
+qla2x00_sysfs_write_edc_status(struct file *filp, struct kobject *kobj,
 			struct bin_attribute *bin_attr,
 			char *buf, loff_t off, size_t count)
 {
@@ -700,7 +700,7 @@ qla2x00_sysfs_write_edc_status(struct kobject *kobj,
 }
 
 static ssize_t
-qla2x00_sysfs_read_edc_status(struct kobject *kobj,
+qla2x00_sysfs_read_edc_status(struct file *filp, struct kobject *kobj,
 			   struct bin_attribute *bin_attr,
 			   char *buf, loff_t off, size_t count)
 {
@@ -730,7 +730,7 @@ static struct bin_attribute sysfs_edc_status_attr = {
 };
 
 static ssize_t
-qla2x00_sysfs_read_xgmac_stats(struct kobject *kobj,
+qla2x00_sysfs_read_xgmac_stats(struct file *filp, struct kobject *kobj,
 		       struct bin_attribute *bin_attr,
 		       char *buf, loff_t off, size_t count)
 {
@@ -782,7 +782,7 @@ static struct bin_attribute sysfs_xgmac_stats_attr = {
 };
 
 static ssize_t
-qla2x00_sysfs_read_dcbx_tlv(struct kobject *kobj,
+qla2x00_sysfs_read_dcbx_tlv(struct file *filp, struct kobject *kobj,
 		       struct bin_attribute *bin_attr,
 		       char *buf, loff_t off, size_t count)
 {

drivers/staging/comedi/drivers/quatech_daqp_cs.c

@@ -48,6 +48,7 @@ Devices: [Quatech] DAQP-208 (daqp), DAQP-308
 */
 
 #include "../comedidev.h"
+#include <linux/semaphore.h>
 
 #include <pcmcia/cs_types.h>
 #include <pcmcia/cs.h>

drivers/staging/udlfb/udlfb.c

@@ -1063,7 +1063,8 @@ static ssize_t metrics_misc_show(struct device *fbdev,
 			atomic_read(&dev->lost_pixels) ? "yes" : "no");
 }
 
-static ssize_t edid_show(struct kobject *kobj, struct bin_attribute *a,
+static ssize_t edid_show(struct file *filp, struct kobject *kobj,
+			 struct bin_attribute *a,
 			 char *buf, loff_t off, size_t count) {
 	struct device *fbdev = container_of(kobj, struct device, kobj);
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);

drivers/usb/core/sysfs.c

@@ -658,7 +658,8 @@ const struct attribute_group *usb_device_groups[] = {
 /* Binary descriptors */
 
 static ssize_t
-read_descriptors(struct kobject *kobj, struct bin_attribute *attr,
+read_descriptors(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);

drivers/usb/core/usb.c

@@ -573,7 +573,7 @@ int usb_lock_device_for_reset(struct usb_device *udev,
 			iface->condition == USB_INTERFACE_UNBOUND))
 		return -EINTR;
 
-	while (usb_trylock_device(udev) != 0) {
+	while (!usb_trylock_device(udev)) {
 
 		/* If we can't acquire the lock after waiting one second,
 		 * we're probably deadlocked */

drivers/video/aty/radeon_base.c

@@ -2099,7 +2099,7 @@ static ssize_t radeon_show_one_edid(char *buf, loff_t off, size_t count, const u
 }
 
 
-static ssize_t radeon_show_edid1(struct kobject *kobj,
+static ssize_t radeon_show_edid1(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *bin_attr,
 				 char *buf, loff_t off, size_t count)
 {
@@ -2112,7 +2112,7 @@ static ssize_t radeon_show_edid1(struct kobject *kobj,
 }
 
 
-static ssize_t radeon_show_edid2(struct kobject *kobj,
+static ssize_t radeon_show_edid2(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *bin_attr,
 				 char *buf, loff_t off, size_t count)
 {

drivers/w1/slaves/w1_ds2431.c

@@ -96,7 +96,7 @@ static int w1_f2d_readblock(struct w1_slave *sl, int off, int count, char *buf)
 	return -1;
 }
 
-static ssize_t w1_f2d_read_bin(struct kobject *kobj,
+static ssize_t w1_f2d_read_bin(struct file *filp, struct kobject *kobj,
 			       struct bin_attribute *bin_attr,
 			       char *buf, loff_t off, size_t count)
 {
@@ -202,7 +202,7 @@ retry:
 	return 0;
 }
 
-static ssize_t w1_f2d_write_bin(struct kobject *kobj,
+static ssize_t w1_f2d_write_bin(struct file *filp, struct kobject *kobj,
 				struct bin_attribute *bin_attr,
 				char *buf, loff_t off, size_t count)
 {

drivers/w1/slaves/w1_ds2433.c

@@ -92,7 +92,7 @@ static int w1_f23_refresh_block(struct w1_slave *sl, struct w1_f23_data *data,
 }
 #endif	/* CONFIG_W1_SLAVE_DS2433_CRC */
 
-static ssize_t w1_f23_read_bin(struct kobject *kobj,
+static ssize_t w1_f23_read_bin(struct file *filp, struct kobject *kobj,
 			       struct bin_attribute *bin_attr,
 			       char *buf, loff_t off, size_t count)
 {
@@ -206,7 +206,7 @@ static int w1_f23_write(struct w1_slave *sl, int addr, int len, const u8 *data)
 	return 0;
 }
 
-static ssize_t w1_f23_write_bin(struct kobject *kobj,
+static ssize_t w1_f23_write_bin(struct file *filp, struct kobject *kobj,
 				struct bin_attribute *bin_attr,
 				char *buf, loff_t off, size_t count)
 {

drivers/w1/slaves/w1_ds2760.c

@@ -97,7 +97,7 @@ int w1_ds2760_recall_eeprom(struct device *dev, int addr)
 	return w1_ds2760_eeprom_cmd(dev, addr, W1_DS2760_RECALL_DATA);
 }
 
-static ssize_t w1_ds2760_read_bin(struct kobject *kobj,
+static ssize_t w1_ds2760_read_bin(struct file *filp, struct kobject *kobj,
 				  struct bin_attribute *bin_attr,
 				  char *buf, loff_t off, size_t count)
 {

drivers/w1/w1.c

@@ -120,7 +120,7 @@ static struct device_attribute w1_slave_attr_id =
 
 /* Default family */
 
-static ssize_t w1_default_write(struct kobject *kobj,
+static ssize_t w1_default_write(struct file *filp, struct kobject *kobj,
 				struct bin_attribute *bin_attr,
 				char *buf, loff_t off, size_t count)
 {
@@ -139,7 +139,7 @@ out_up:
 	return count;
 }
 
-static ssize_t w1_default_read(struct kobject *kobj,
+static ssize_t w1_default_read(struct file *filp, struct kobject *kobj,
 			       struct bin_attribute *bin_attr,
 			       char *buf, loff_t off, size_t count)
 {

drivers/zorro/zorro-sysfs.c

@@ -49,7 +49,7 @@ static ssize_t zorro_show_resource(struct device *dev, struct device_attribute *
 
 static DEVICE_ATTR(resource, S_IRUGO, zorro_show_resource, NULL);
 
-static ssize_t zorro_read_config(struct kobject *kobj,
+static ssize_t zorro_read_config(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *bin_attr,
 				 char *buf, loff_t off, size_t count)
 {

fs/ramfs/inode.c

@@ -214,7 +214,7 @@ static int ramfs_parse_options(char *data, struct ramfs_mount_opts *opts)
 	return 0;
 }
 
-static int ramfs_fill_super(struct super_block * sb, void * data, int silent)
+int ramfs_fill_super(struct super_block *sb, void *data, int silent)
 {
 	struct ramfs_fs_info *fsi;
 	struct inode *inode = NULL;

fs/sysfs/bin.c

@@ -46,9 +46,9 @@ struct bin_buffer {
 };
 
 static int
-fill_read(struct dentry *dentry, char *buffer, loff_t off, size_t count)
+fill_read(struct file *file, char *buffer, loff_t off, size_t count)
 {
-	struct sysfs_dirent *attr_sd = dentry->d_fsdata;
+	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;
 	struct bin_attribute *attr = attr_sd->s_bin_attr.bin_attr;
 	struct kobject *kobj = attr_sd->s_parent->s_dir.kobj;
 	int rc;
@@ -59,7 +59,7 @@ fill_read(struct dentry *dentry, char *buffer, loff_t off, size_t count)
 
 	rc = -EIO;
 	if (attr->read)
-		rc = attr->read(kobj, attr, buffer, off, count);
+		rc = attr->read(file, kobj, attr, buffer, off, count);
 
 	sysfs_put_active(attr_sd);
 
@@ -70,8 +70,7 @@ static ssize_t
 read(struct file *file, char __user *userbuf, size_t bytes, loff_t *off)
 {
 	struct bin_buffer *bb = file->private_data;
-	struct dentry *dentry = file->f_path.dentry;
-	int size = dentry->d_inode->i_size;
+	int size = file->f_path.dentry->d_inode->i_size;
 	loff_t offs = *off;
 	int count = min_t(size_t, bytes, PAGE_SIZE);
 	char *temp;
@@ -92,7 +91,7 @@ read(struct file *file, char __user *userbuf, size_t bytes, loff_t *off)
 
 	mutex_lock(&bb->mutex);
 
-	count = fill_read(dentry, bb->buffer, offs, count);
+	count = fill_read(file, bb->buffer, offs, count);
 	if (count < 0) {
 		mutex_unlock(&bb->mutex);
 		goto out_free;
@@ -117,9 +116,9 @@ read(struct file *file, char __user *userbuf, size_t bytes, loff_t *off)
 }
 
 static int
-flush_write(struct dentry *dentry, char *buffer, loff_t offset, size_t count)
+flush_write(struct file *file, char *buffer, loff_t offset, size_t count)
 {
-	struct sysfs_dirent *attr_sd = dentry->d_fsdata;
+	struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata;
 	struct bin_attribute *attr = attr_sd->s_bin_attr.bin_attr;
 	struct kobject *kobj = attr_sd->s_parent->s_dir.kobj;
 	int rc;
@@ -130,7 +129,7 @@ flush_write(struct dentry *dentry, char *buffer, loff_t offset, size_t count)
 
 	rc = -EIO;
 	if (attr->write)
-		rc = attr->write(kobj, attr, buffer, offset, count);
+		rc = attr->write(file, kobj, attr, buffer, offset, count);
 
 	sysfs_put_active(attr_sd);
 
@@ -141,8 +140,7 @@ static ssize_t write(struct file *file, const char __user *userbuf,
 		     size_t bytes, loff_t *off)
 {
 	struct bin_buffer *bb = file->private_data;
-	struct dentry *dentry = file->f_path.dentry;
-	int size = dentry->d_inode->i_size;
+	int size = file->f_path.dentry->d_inode->i_size;
 	loff_t offs = *off;
 	int count = min_t(size_t, bytes, PAGE_SIZE);
 	char *temp;
@@ -165,7 +163,7 @@ static ssize_t write(struct file *file, const char __user *userbuf,
 
 	memcpy(bb->buffer, temp, count);
 
-	count = flush_write(dentry, bb->buffer, offs, count);
+	count = flush_write(file, bb->buffer, offs, count);
 	mutex_unlock(&bb->mutex);
 
 	if (count > 0)
@@ -363,7 +361,7 @@ static int mmap(struct file *file, struct vm_area_struct *vma)
 	if (!attr->mmap)
 		goto out_put;
 
-	rc = attr->mmap(kobj, attr, vma);
+	rc = attr->mmap(file, kobj, attr, vma);
 	if (rc)
 		goto out_put;
 
@@ -501,7 +499,7 @@ int sysfs_create_bin_file(struct kobject *kobj,
 void sysfs_remove_bin_file(struct kobject *kobj,
 			   const struct bin_attribute *attr)
 {
-	sysfs_hash_and_remove(kobj->sd, attr->attr.name);
+	sysfs_hash_and_remove(kobj->sd, NULL, attr->attr.name);
 }
 
 EXPORT_SYMBOL_GPL(sysfs_create_bin_file);

fs/sysfs/dir.c

@@ -380,7 +380,7 @@ int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
 {
 	struct sysfs_inode_attrs *ps_iattr;
 
-	if (sysfs_find_dirent(acxt->parent_sd, sd->s_name))
+	if (sysfs_find_dirent(acxt->parent_sd, sd->s_ns, sd->s_name))
 		return -EEXIST;
 
 	sd->s_parent = sysfs_get(acxt->parent_sd);
@@ -533,13 +533,17 @@ void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt)
  *	Pointer to sysfs_dirent if found, NULL if not.
  */
 struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd,
+				       const void *ns,
 				       const unsigned char *name)
 {
 	struct sysfs_dirent *sd;
 
-	for (sd = parent_sd->s_dir.children; sd; sd = sd->s_sibling)
+	for (sd = parent_sd->s_dir.children; sd; sd = sd->s_sibling) {
+		if (ns && sd->s_ns && (sd->s_ns != ns))
+			continue;
 		if (!strcmp(sd->s_name, name))
 			return sd;
+	}
 	return NULL;
 }
 
@@ -558,12 +562,13 @@ struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd,
  *	Pointer to sysfs_dirent if found, NULL if not.
  */
 struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
+				      const void *ns,
 				      const unsigned char *name)
 {
 	struct sysfs_dirent *sd;
 
 	mutex_lock(&sysfs_mutex);
-	sd = sysfs_find_dirent(parent_sd, name);
+	sd = sysfs_find_dirent(parent_sd, ns, name);
 	sysfs_get(sd);
 	mutex_unlock(&sysfs_mutex);
 
@@ -572,7 +577,8 @@ struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
 EXPORT_SYMBOL_GPL(sysfs_get_dirent);
 
 static int create_dir(struct kobject *kobj, struct sysfs_dirent *parent_sd,
-		      const char *name, struct sysfs_dirent **p_sd)
+	enum kobj_ns_type type, const void *ns, const char *name,
+	struct sysfs_dirent **p_sd)
 {
 	umode_t mode = S_IFDIR| S_IRWXU | S_IRUGO | S_IXUGO;
 	struct sysfs_addrm_cxt acxt;
@@ -583,6 +589,9 @@ static int create_dir(struct kobject *kobj, struct sysfs_dirent *parent_sd,
 	sd = sysfs_new_dirent(name, mode, SYSFS_DIR);
 	if (!sd)
 		return -ENOMEM;
+
+	sd->s_flags |= (type << SYSFS_NS_TYPE_SHIFT);
+	sd->s_ns = ns;
 	sd->s_dir.kobj = kobj;
 
 	/* link in */
@@ -601,7 +610,33 @@ static int create_dir(struct kobject *kobj, struct sysfs_dirent *parent_sd,
 int sysfs_create_subdir(struct kobject *kobj, const char *name,
 			struct sysfs_dirent **p_sd)
 {
-	return create_dir(kobj, kobj->sd, name, p_sd);
+	return create_dir(kobj, kobj->sd,
+			  KOBJ_NS_TYPE_NONE, NULL, name, p_sd);
+}
+
+/**
+ *	sysfs_read_ns_type: return associated ns_type
+ *	@kobj: the kobject being queried
+ *
+ *	Each kobject can be tagged with exactly one namespace type
+ *	(i.e. network or user).  Return the ns_type associated with
+ *	this object if any
+ */
+static enum kobj_ns_type sysfs_read_ns_type(struct kobject *kobj)
+{
+	const struct kobj_ns_type_operations *ops;
+	enum kobj_ns_type type;
+
+	ops = kobj_child_ns_ops(kobj);
+	if (!ops)
+		return KOBJ_NS_TYPE_NONE;
+
+	type = ops->type;
+	BUG_ON(type <= KOBJ_NS_TYPE_NONE);
+	BUG_ON(type >= KOBJ_NS_TYPES);
+	BUG_ON(!kobj_ns_type_registered(type));
+
+	return type;
 }
 
 /**
@@ -610,7 +645,9 @@ int sysfs_create_subdir(struct kobject *kobj, const char *name,
  */
 int sysfs_create_dir(struct kobject * kobj)
 {
+	enum kobj_ns_type type;
 	struct sysfs_dirent *parent_sd, *sd;
+	const void *ns = NULL;
 	int error = 0;
 
 	BUG_ON(!kobj);
@@ -620,7 +657,11 @@ int sysfs_create_dir(struct kobject * kobj)
 	else
 		parent_sd = &sysfs_root;
 
-	error = create_dir(kobj, parent_sd, kobject_name(kobj), &sd);
+	if (sysfs_ns_type(parent_sd))
+		ns = kobj->ktype->namespace(kobj);
+	type = sysfs_read_ns_type(kobj);
+
+	error = create_dir(kobj, parent_sd, type, ns, kobject_name(kobj), &sd);
 	if (!error)
 		kobj->sd = sd;
 	return error;
@@ -630,13 +671,19 @@ static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
 				struct nameidata *nd)
 {
 	struct dentry *ret = NULL;
-	struct sysfs_dirent *parent_sd = dentry->d_parent->d_fsdata;
+	struct dentry *parent = dentry->d_parent;
+	struct sysfs_dirent *parent_sd = parent->d_fsdata;
 	struct sysfs_dirent *sd;
 	struct inode *inode;
+	enum kobj_ns_type type;
+	const void *ns;
 
 	mutex_lock(&sysfs_mutex);
 
-	sd = sysfs_find_dirent(parent_sd, dentry->d_name.name);
+	type = sysfs_ns_type(parent_sd);
+	ns = sysfs_info(dir->i_sb)->ns[type];
+
+	sd = sysfs_find_dirent(parent_sd, ns, dentry->d_name.name);
 
 	/* no such entry */
 	if (!sd) {
@@ -735,7 +782,8 @@ void sysfs_remove_dir(struct kobject * kobj)
 }
 
 int sysfs_rename(struct sysfs_dirent *sd,
-	struct sysfs_dirent *new_parent_sd, const char *new_name)
+	struct sysfs_dirent *new_parent_sd, const void *new_ns,
+	const char *new_name)
 {
 	const char *dup_name = NULL;
 	int error;
@@ -743,12 +791,12 @@ int sysfs_rename(struct sysfs_dirent *sd,
 	mutex_lock(&sysfs_mutex);
 
 	error = 0;
-	if ((sd->s_parent == new_parent_sd) &&
+	if ((sd->s_parent == new_parent_sd) && (sd->s_ns == new_ns) &&
 	    (strcmp(sd->s_name, new_name) == 0))
 		goto out;	/* nothing to rename */
 
 	error = -EEXIST;
-	if (sysfs_find_dirent(new_parent_sd, new_name))
+	if (sysfs_find_dirent(new_parent_sd, new_ns, new_name))
 		goto out;
 
 	/* rename sysfs_dirent */
@@ -770,6 +818,7 @@ int sysfs_rename(struct sysfs_dirent *sd,
 		sd->s_parent = new_parent_sd;
 		sysfs_link_sibling(sd);
 	}
+	sd->s_ns = new_ns;
 
 	error = 0;
  out:
@@ -780,19 +829,28 @@ int sysfs_rename(struct sysfs_dirent *sd,
 
 int sysfs_rename_dir(struct kobject *kobj, const char *new_name)
 {
-	return sysfs_rename(kobj->sd, kobj->sd->s_parent, new_name);
+	struct sysfs_dirent *parent_sd = kobj->sd->s_parent;
+	const void *new_ns = NULL;
+
+	if (sysfs_ns_type(parent_sd))
+		new_ns = kobj->ktype->namespace(kobj);
+
+	return sysfs_rename(kobj->sd, parent_sd, new_ns, new_name);
 }
 
 int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent_kobj)
 {
 	struct sysfs_dirent *sd = kobj->sd;
 	struct sysfs_dirent *new_parent_sd;
+	const void *new_ns = NULL;
 
 	BUG_ON(!sd->s_parent);
+	if (sysfs_ns_type(sd->s_parent))
+		new_ns = kobj->ktype->namespace(kobj);
 	new_parent_sd = new_parent_kobj && new_parent_kobj->sd ?
 		new_parent_kobj->sd : &sysfs_root;
 
-	return sysfs_rename(sd, new_parent_sd, sd->s_name);
+	return sysfs_rename(sd, new_parent_sd, new_ns, sd->s_name);
 }
 
 /* Relationship between s_mode and the DT_xxx types */
@@ -807,32 +865,35 @@ static int sysfs_dir_release(struct inode *inode, struct file *filp)
 	return 0;
 }
 
-static struct sysfs_dirent *sysfs_dir_pos(struct sysfs_dirent *parent_sd,
-	ino_t ino, struct sysfs_dirent *pos)
+static struct sysfs_dirent *sysfs_dir_pos(const void *ns,
+	struct sysfs_dirent *parent_sd,	ino_t ino, struct sysfs_dirent *pos)
 {
 	if (pos) {
 		int valid = !(pos->s_flags & SYSFS_FLAG_REMOVED) &&
 			pos->s_parent == parent_sd &&
 			ino == pos->s_ino;
 		sysfs_put(pos);
-		if (valid)
-			return pos;
+		if (!valid)
+			pos = NULL;
 	}
-	pos = NULL;
-	if ((ino > 1) && (ino < INT_MAX)) {
+	if (!pos && (ino > 1) && (ino < INT_MAX)) {
 		pos = parent_sd->s_dir.children;
 		while (pos && (ino > pos->s_ino))
 			pos = pos->s_sibling;
 	}
+	while (pos && pos->s_ns && pos->s_ns != ns)
+		pos = pos->s_sibling;
 	return pos;
 }
 
-static struct sysfs_dirent *sysfs_dir_next_pos(struct sysfs_dirent *parent_sd,
-	ino_t ino, struct sysfs_dirent *pos)
+static struct sysfs_dirent *sysfs_dir_next_pos(const void *ns,
+	struct sysfs_dirent *parent_sd,	ino_t ino, struct sysfs_dirent *pos)
 {
-	pos = sysfs_dir_pos(parent_sd, ino, pos);
+	pos = sysfs_dir_pos(ns, parent_sd, ino, pos);
 	if (pos)
 		pos = pos->s_sibling;
+	while (pos && pos->s_ns && pos->s_ns != ns)
+		pos = pos->s_sibling;
 	return pos;
 }
 
@@ -841,8 +902,13 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir)
 	struct dentry *dentry = filp->f_path.dentry;
 	struct sysfs_dirent * parent_sd = dentry->d_fsdata;
 	struct sysfs_dirent *pos = filp->private_data;
+	enum kobj_ns_type type;
+	const void *ns;
 	ino_t ino;
 
+	type = sysfs_ns_type(parent_sd);
+	ns = sysfs_info(dentry->d_sb)->ns[type];
+
 	if (filp->f_pos == 0) {
 		ino = parent_sd->s_ino;
 		if (filldir(dirent, ".", 1, filp->f_pos, ino, DT_DIR) == 0)
@@ -857,9 +923,9 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir)
 			filp->f_pos++;
 	}
 	mutex_lock(&sysfs_mutex);
-	for (pos = sysfs_dir_pos(parent_sd, filp->f_pos, pos);
+	for (pos = sysfs_dir_pos(ns, parent_sd, filp->f_pos, pos);
 	     pos;
-	     pos = sysfs_dir_next_pos(parent_sd, filp->f_pos, pos)) {
+	     pos = sysfs_dir_next_pos(ns, parent_sd, filp->f_pos, pos)) {
 		const char * name;
 		unsigned int type;
 		int len, ret;

fs/sysfs/file.c

@@ -478,9 +478,12 @@ void sysfs_notify(struct kobject *k, const char *dir, const char *attr)
 	mutex_lock(&sysfs_mutex);
 
 	if (sd && dir)
-		sd = sysfs_find_dirent(sd, dir);
+		/* Only directories are tagged, so no need to pass
+		 * a tag explicitly.
+		 */
+		sd = sysfs_find_dirent(sd, NULL, dir);
 	if (sd && attr)
-		sd = sysfs_find_dirent(sd, attr);
+		sd = sysfs_find_dirent(sd, NULL, attr);
 	if (sd)
 		sysfs_notify_dirent(sd);
 
@@ -569,7 +572,7 @@ int sysfs_add_file_to_group(struct kobject *kobj,
 	int error;
 
 	if (group)
-		dir_sd = sysfs_get_dirent(kobj->sd, group);
+		dir_sd = sysfs_get_dirent(kobj->sd, NULL, group);
 	else
 		dir_sd = sysfs_get(kobj->sd);
 
@@ -599,7 +602,7 @@ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
 	mutex_lock(&sysfs_mutex);
 
 	rc = -ENOENT;
-	sd = sysfs_find_dirent(kobj->sd, attr->name);
+	sd = sysfs_find_dirent(kobj->sd, NULL, attr->name);
 	if (!sd)
 		goto out;
 
@@ -624,7 +627,7 @@ EXPORT_SYMBOL_GPL(sysfs_chmod_file);
 
 void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr)
 {
-	sysfs_hash_and_remove(kobj->sd, attr->name);
+	sysfs_hash_and_remove(kobj->sd, NULL, attr->name);
 }
 
 void sysfs_remove_files(struct kobject * kobj, const struct attribute **ptr)
@@ -646,11 +649,11 @@ void sysfs_remove_file_from_group(struct kobject *kobj,
 	struct sysfs_dirent *dir_sd;
 
 	if (group)
-		dir_sd = sysfs_get_dirent(kobj->sd, group);
+		dir_sd = sysfs_get_dirent(kobj->sd, NULL, group);
 	else
 		dir_sd = sysfs_get(kobj->sd);
 	if (dir_sd) {
-		sysfs_hash_and_remove(dir_sd, attr->name);
+		sysfs_hash_and_remove(dir_sd, NULL, attr->name);
 		sysfs_put(dir_sd);
 	}
 }

fs/sysfs/group.c

@@ -23,7 +23,7 @@ static void remove_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
 	int i;
 
 	for (i = 0, attr = grp->attrs; *attr; i++, attr++)
-		sysfs_hash_and_remove(dir_sd, (*attr)->name);
+		sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
 }
 
 static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
@@ -39,7 +39,7 @@ static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
 		 * visibility.  Do this by first removing then
 		 * re-adding (if required) the file */
 		if (update)
-			sysfs_hash_and_remove(dir_sd, (*attr)->name);
+			sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
 		if (grp->is_visible) {
 			mode = grp->is_visible(kobj, *attr, i);
 			if (!mode)
@@ -132,7 +132,7 @@ void sysfs_remove_group(struct kobject * kobj,
 	struct sysfs_dirent *sd;
 
 	if (grp->name) {
-		sd = sysfs_get_dirent(dir_sd, grp->name);
+		sd = sysfs_get_dirent(dir_sd, NULL, grp->name);
 		if (!sd) {
 			WARN(!sd, KERN_WARNING "sysfs group %p not found for "
 				"kobject '%s'\n", grp, kobject_name(kobj));

fs/sysfs/inode.c

@@ -324,7 +324,7 @@ void sysfs_delete_inode(struct inode *inode)
 	sysfs_put(sd);
 }
 
-int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name)
+int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const void *ns, const char *name)
 {
 	struct sysfs_addrm_cxt acxt;
 	struct sysfs_dirent *sd;
@@ -334,7 +334,9 @@ int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name)
 
 	sysfs_addrm_start(&acxt, dir_sd);
 
-	sd = sysfs_find_dirent(dir_sd, name);
+	sd = sysfs_find_dirent(dir_sd, ns, name);
+	if (sd && (sd->s_ns != ns))
+		sd = NULL;
 	if (sd)
 		sysfs_remove_one(&acxt, sd);
 

fs/sysfs/mount.c

@@ -35,7 +35,7 @@ static const struct super_operations sysfs_ops = {
 struct sysfs_dirent sysfs_root = {
 	.s_name		= "",
 	.s_count	= ATOMIC_INIT(1),
-	.s_flags	= SYSFS_DIR,
+	.s_flags	= SYSFS_DIR | (KOBJ_NS_TYPE_NONE << SYSFS_NS_TYPE_SHIFT),
 	.s_mode		= S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
 	.s_ino		= 1,
 };
@@ -72,18 +72,107 @@ static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
 	return 0;
 }
 
+static int sysfs_test_super(struct super_block *sb, void *data)
+{
+	struct sysfs_super_info *sb_info = sysfs_info(sb);
+	struct sysfs_super_info *info = data;
+	enum kobj_ns_type type;
+	int found = 1;
+
+	for (type = KOBJ_NS_TYPE_NONE; type < KOBJ_NS_TYPES; type++) {
+		if (sb_info->ns[type] != info->ns[type])
+			found = 0;
+	}
+	return found;
+}
+
+static int sysfs_set_super(struct super_block *sb, void *data)
+{
+	int error;
+	error = set_anon_super(sb, data);
+	if (!error)
+		sb->s_fs_info = data;
+	return error;
+}
+
 static int sysfs_get_sb(struct file_system_type *fs_type,
 	int flags, const char *dev_name, void *data, struct vfsmount *mnt)
 {
-	return get_sb_single(fs_type, flags, data, sysfs_fill_super, mnt);
+	struct sysfs_super_info *info;
+	enum kobj_ns_type type;
+	struct super_block *sb;
+	int error;
+
+	error = -ENOMEM;
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
+	if (!info)
+		goto out;
+
+	for (type = KOBJ_NS_TYPE_NONE; type < KOBJ_NS_TYPES; type++)
+		info->ns[type] = kobj_ns_current(type);
+
+	sb = sget(fs_type, sysfs_test_super, sysfs_set_super, info);
+	if (IS_ERR(sb) || sb->s_fs_info != info)
+		kfree(info);
+	if (IS_ERR(sb)) {
+		error = PTR_ERR(sb);
+		goto out;
+	}
+	if (!sb->s_root) {
+		sb->s_flags = flags;
+		error = sysfs_fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
+		if (error) {
+			deactivate_locked_super(sb);
+			goto out;
+		}
+		sb->s_flags |= MS_ACTIVE;
+	}
+
+	simple_set_mnt(mnt, sb);
+	error = 0;
+out:
+	return error;
+}
+
+static void sysfs_kill_sb(struct super_block *sb)
+{
+	struct sysfs_super_info *info = sysfs_info(sb);
+
+	/* Remove the superblock from fs_supers/s_instances
+	 * so we can't find it, before freeing sysfs_super_info.
+	 */
+	kill_anon_super(sb);
+	kfree(info);
 }
 
 static struct file_system_type sysfs_fs_type = {
 	.name		= "sysfs",
 	.get_sb		= sysfs_get_sb,
-	.kill_sb	= kill_anon_super,
+	.kill_sb	= sysfs_kill_sb,
 };
 
+void sysfs_exit_ns(enum kobj_ns_type type, const void *ns)
+{
+	struct super_block *sb;
+
+	mutex_lock(&sysfs_mutex);
+	spin_lock(&sb_lock);
+	list_for_each_entry(sb, &sysfs_fs_type.fs_supers, s_instances) {
+		struct sysfs_super_info *info = sysfs_info(sb);
+		/*
+		 * If we see a superblock on the fs_supers/s_instances
+		 * list the unmount has not completed and sb->s_fs_info
+		 * points to a valid struct sysfs_super_info.
+		 */
+		/* Ignore superblocks with the wrong ns */
+		if (info->ns[type] != ns)
+			continue;
+		info->ns[type] = NULL;
+	}
+	spin_unlock(&sb_lock);
+	mutex_unlock(&sysfs_mutex);
+}
+
 int __init sysfs_init(void)
 {
 	int err = -ENOMEM;

fs/sysfs/symlink.c

@@ -58,6 +58,8 @@ static int sysfs_do_create_link(struct kobject *kobj, struct kobject *target,
 	if (!sd)
 		goto out_put;
 
+	if (sysfs_ns_type(parent_sd))
+		sd->s_ns = target->ktype->namespace(target);
 	sd->s_symlink.target_sd = target_sd;
 	target_sd = NULL;	/* reference is now owned by the symlink */
 
@@ -106,6 +108,26 @@ int sysfs_create_link_nowarn(struct kobject *kobj, struct kobject *target,
 	return sysfs_do_create_link(kobj, target, name, 0);
 }
 
+/**
+ *	sysfs_delete_link - remove symlink in object's directory.
+ *	@kobj:	object we're acting for.
+ *	@targ:	object we're pointing to.
+ *	@name:	name of the symlink to remove.
+ *
+ *	Unlike sysfs_remove_link sysfs_delete_link has enough information
+ *	to successfully delete symlinks in tagged directories.
+ */
+void sysfs_delete_link(struct kobject *kobj, struct kobject *targ,
+			const char *name)
+{
+	const void *ns = NULL;
+	spin_lock(&sysfs_assoc_lock);
+	if (targ->sd)
+		ns = targ->sd->s_ns;
+	spin_unlock(&sysfs_assoc_lock);
+	sysfs_hash_and_remove(kobj->sd, ns, name);
+}
+
 /**
  *	sysfs_remove_link - remove symlink in object's directory.
  *	@kobj:	object we're acting for.
@@ -121,7 +143,7 @@ void sysfs_remove_link(struct kobject * kobj, const char * name)
 	else
 		parent_sd = kobj->sd;
 
-	sysfs_hash_and_remove(parent_sd, name);
+	sysfs_hash_and_remove(parent_sd, NULL, name);
 }
 
 /**
@@ -137,6 +159,7 @@ int sysfs_rename_link(struct kobject *kobj, struct kobject *targ,
 			const char *old, const char *new)
 {
 	struct sysfs_dirent *parent_sd, *sd = NULL;
+	const void *old_ns = NULL, *new_ns = NULL;
 	int result;
 
 	if (!kobj)
@@ -144,8 +167,11 @@ int sysfs_rename_link(struct kobject *kobj, struct kobject *targ,
 	else
 		parent_sd = kobj->sd;
 
+	if (targ->sd)
+		old_ns = targ->sd->s_ns;
+
 	result = -ENOENT;
-	sd = sysfs_get_dirent(parent_sd, old);
+	sd = sysfs_get_dirent(parent_sd, old_ns, old);
 	if (!sd)
 		goto out;
 
@@ -155,7 +181,10 @@ int sysfs_rename_link(struct kobject *kobj, struct kobject *targ,
 	if (sd->s_symlink.target_sd->s_dir.kobj != targ)
 		goto out;
 
-	result = sysfs_rename(sd, parent_sd, new);
+	if (sysfs_ns_type(parent_sd))
+		new_ns = targ->ktype->namespace(targ);
+
+	result = sysfs_rename(sd, parent_sd, new_ns, new);
 
 out:
 	sysfs_put(sd);

fs/sysfs/sysfs.h

@@ -58,6 +58,7 @@ struct sysfs_dirent {
 	struct sysfs_dirent	*s_sibling;
 	const char		*s_name;
 
+	const void		*s_ns; /* namespace tag */
 	union {
 		struct sysfs_elem_dir		s_dir;
 		struct sysfs_elem_symlink	s_symlink;
@@ -81,14 +82,27 @@ struct sysfs_dirent {
 #define SYSFS_COPY_NAME			(SYSFS_DIR | SYSFS_KOBJ_LINK)
 #define SYSFS_ACTIVE_REF		(SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR)
 
-#define SYSFS_FLAG_MASK			~SYSFS_TYPE_MASK
-#define SYSFS_FLAG_REMOVED		0x0200
+/* identify any namespace tag on sysfs_dirents */
+#define SYSFS_NS_TYPE_MASK		0xff00
+#define SYSFS_NS_TYPE_SHIFT		8
+
+#define SYSFS_FLAG_MASK			~(SYSFS_NS_TYPE_MASK|SYSFS_TYPE_MASK)
+#define SYSFS_FLAG_REMOVED		0x020000
 
 static inline unsigned int sysfs_type(struct sysfs_dirent *sd)
 {
 	return sd->s_flags & SYSFS_TYPE_MASK;
 }
 
+/*
+ * Return any namespace tags on this dirent.
+ * enum kobj_ns_type is defined in linux/kobject.h
+ */
+static inline enum kobj_ns_type sysfs_ns_type(struct sysfs_dirent *sd)
+{
+	return (sd->s_flags & SYSFS_NS_TYPE_MASK) >> SYSFS_NS_TYPE_SHIFT;
+}
+
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 #define sysfs_dirent_init_lockdep(sd)				\
 do {								\
@@ -114,6 +128,16 @@ struct sysfs_addrm_cxt {
 /*
  * mount.c
  */
+
+/*
+ * Each sb is associated with a set of namespace tags (i.e.
+ * the network namespace of the task which mounted this sysfs
+ * instance).
+ */
+struct sysfs_super_info {
+	const void *ns[KOBJ_NS_TYPES];
+};
+#define sysfs_info(SB) ((struct sysfs_super_info *)(SB->s_fs_info))
 extern struct sysfs_dirent sysfs_root;
 extern struct kmem_cache *sysfs_dir_cachep;
 
@@ -137,8 +161,10 @@ void sysfs_remove_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd);
 void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt);
 
 struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd,
+				       const void *ns,
 				       const unsigned char *name);
 struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
+				      const void *ns,
 				      const unsigned char *name);
 struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type);
 
@@ -149,7 +175,7 @@ int sysfs_create_subdir(struct kobject *kobj, const char *name,
 void sysfs_remove_subdir(struct sysfs_dirent *sd);
 
 int sysfs_rename(struct sysfs_dirent *sd,
-	struct sysfs_dirent *new_parent_sd, const char *new_name);
+	struct sysfs_dirent *new_parent_sd, const void *ns, const char *new_name);
 
 static inline struct sysfs_dirent *__sysfs_get(struct sysfs_dirent *sd)
 {
@@ -179,7 +205,7 @@ int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
 int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
 int sysfs_setxattr(struct dentry *dentry, const char *name, const void *value,
 		size_t size, int flags);
-int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name);
+int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const void *ns, const char *name);
 int sysfs_inode_init(void);
 
 /*

include/linux/device.h

@@ -22,7 +22,6 @@
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/pm.h>
-#include <linux/semaphore.h>
 #include <asm/atomic.h>
 #include <asm/device.h>
 
@@ -203,6 +202,9 @@ struct class {
 	int (*suspend)(struct device *dev, pm_message_t state);
 	int (*resume)(struct device *dev);
 
+	const struct kobj_ns_type_operations *ns_type;
+	const void *(*namespace)(struct device *dev);
+
 	const struct dev_pm_ops *pm;
 
 	struct class_private *p;
@@ -404,7 +406,7 @@ struct device {
 	const char		*init_name; /* initial name of the device */
 	struct device_type	*type;
 
-	struct semaphore	sem;	/* semaphore to synchronize calls to
+	struct mutex		mutex;	/* mutex to synchronize calls to
 					 * its driver.
 					 */
 
@@ -514,17 +516,17 @@ static inline bool device_async_suspend_enabled(struct device *dev)
 
 static inline void device_lock(struct device *dev)
 {
-	down(&dev->sem);
+	mutex_lock(&dev->mutex);
 }
 
 static inline int device_trylock(struct device *dev)
 {
-	return down_trylock(&dev->sem);
+	return mutex_trylock(&dev->mutex);
 }
 
 static inline void device_unlock(struct device *dev)
 {
-	up(&dev->sem);
+	mutex_unlock(&dev->mutex);
 }
 
 void driver_init(void);

include/linux/firmware.h

@@ -12,6 +12,7 @@
 struct firmware {
 	size_t size;
 	const u8 *data;
+	struct page **pages;
 };
 
 struct device;

include/linux/kobject.h

@@ -108,6 +108,8 @@ struct kobj_type {
 	void (*release)(struct kobject *kobj);
 	const struct sysfs_ops *sysfs_ops;
 	struct attribute **default_attrs;
+	const struct kobj_ns_type_operations *(*child_ns_type)(struct kobject *kobj);
+	const void *(*namespace)(struct kobject *kobj);
 };
 
 struct kobj_uevent_env {
@@ -134,6 +136,42 @@ struct kobj_attribute {
 
 extern const struct sysfs_ops kobj_sysfs_ops;
 
+/*
+ * Namespace types which are used to tag kobjects and sysfs entries.
+ * Network namespace will likely be the first.
+ */
+enum kobj_ns_type {
+	KOBJ_NS_TYPE_NONE = 0,
+	KOBJ_NS_TYPE_NET,
+	KOBJ_NS_TYPES
+};
+
+struct sock;
+
+/*
+ * Callbacks so sysfs can determine namespaces
+ *   @current_ns: return calling task's namespace
+ *   @netlink_ns: return namespace to which a sock belongs (right?)
+ *   @initial_ns: return the initial namespace (i.e. init_net_ns)
+ */
+struct kobj_ns_type_operations {
+	enum kobj_ns_type type;
+	const void *(*current_ns)(void);
+	const void *(*netlink_ns)(struct sock *sk);
+	const void *(*initial_ns)(void);
+};
+
+int kobj_ns_type_register(const struct kobj_ns_type_operations *ops);
+int kobj_ns_type_registered(enum kobj_ns_type type);
+const struct kobj_ns_type_operations *kobj_child_ns_ops(struct kobject *parent);
+const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj);
+
+const void *kobj_ns_current(enum kobj_ns_type type);
+const void *kobj_ns_netlink(enum kobj_ns_type type, struct sock *sk);
+const void *kobj_ns_initial(enum kobj_ns_type type);
+void kobj_ns_exit(enum kobj_ns_type type, const void *ns);
+
+
 /**
  * struct kset - a set of kobjects of a specific type, belonging to a specific subsystem.
  *

include/linux/kref.h

@@ -21,7 +21,6 @@ struct kref {
 	atomic_t refcount;
 };
 
-void kref_set(struct kref *kref, int num);
 void kref_init(struct kref *kref);
 void kref_get(struct kref *kref);
 int kref_put(struct kref *kref, void (*release) (struct kref *kref));

include/linux/lockdep.h

@@ -44,6 +44,8 @@ struct lock_class_key {
 	struct lockdep_subclass_key	subkeys[MAX_LOCKDEP_SUBCLASSES];
 };
 
+extern struct lock_class_key __lockdep_no_validate__;
+
 #define LOCKSTAT_POINTS		4
 
 /*
@@ -270,6 +272,9 @@ extern void lockdep_init_map(struct lockdep_map *lock, const char *name,
 #define lockdep_set_subclass(lock, sub)	\
 		lockdep_init_map(&(lock)->dep_map, #lock, \
 				 (lock)->dep_map.key, sub)
+
+#define lockdep_set_novalidate_class(lock) \
+	lockdep_set_class(lock, &__lockdep_no_validate__)
 /*
  * Compare locking classes
  */
@@ -354,6 +359,9 @@ static inline void lockdep_on(void)
 #define lockdep_set_class_and_subclass(lock, key, sub) \
 		do { (void)(key); } while (0)
 #define lockdep_set_subclass(lock, sub)		do { } while (0)
+
+#define lockdep_set_novalidate_class(lock) do { } while (0)
+
 /*
  * We don't define lockdep_match_class() and lockdep_match_key() for !LOCKDEP
  * case since the result is not well defined and the caller should rather

include/linux/netlink.h

@@ -188,6 +188,10 @@ extern int netlink_has_listeners(struct sock *sk, unsigned int group);
 extern int netlink_unicast(struct sock *ssk, struct sk_buff *skb, __u32 pid, int nonblock);
 extern int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, __u32 pid,
 			     __u32 group, gfp_t allocation);
+extern int netlink_broadcast_filtered(struct sock *ssk, struct sk_buff *skb,
+	__u32 pid, __u32 group, gfp_t allocation,
+	int (*filter)(struct sock *dsk, struct sk_buff *skb, void *data),
+	void *filter_data);
 extern int netlink_set_err(struct sock *ssk, __u32 pid, __u32 group, int code);
 extern int netlink_register_notifier(struct notifier_block *nb);
 extern int netlink_unregister_notifier(struct notifier_block *nb);

include/linux/ramfs.h

@@ -20,4 +20,6 @@ extern const struct file_operations ramfs_file_operations;
 extern const struct vm_operations_struct generic_file_vm_ops;
 extern int __init init_rootfs(void);
 
+int ramfs_fill_super(struct super_block *sb, void *data, int silent);
+
 #endif

include/linux/sysfs.h

@@ -20,6 +20,7 @@
 
 struct kobject;
 struct module;
+enum kobj_ns_type;
 
 /* FIXME
  * The *owner field is no longer used.
@@ -86,17 +87,18 @@ struct attribute_group {
 
 #define attr_name(_attr) (_attr).attr.name
 
+struct file;
 struct vm_area_struct;
 
 struct bin_attribute {
 	struct attribute	attr;
 	size_t			size;
 	void			*private;
-	ssize_t (*read)(struct kobject *, struct bin_attribute *,
+	ssize_t (*read)(struct file *, struct kobject *, struct bin_attribute *,
 			char *, loff_t, size_t);
-	ssize_t (*write)(struct kobject *, struct bin_attribute *,
+	ssize_t (*write)(struct file *,struct kobject *, struct bin_attribute *,
 			 char *, loff_t, size_t);
-	int (*mmap)(struct kobject *, struct bin_attribute *attr,
+	int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr,
 		    struct vm_area_struct *vma);
 };
 
@@ -154,6 +156,9 @@ void sysfs_remove_link(struct kobject *kobj, const char *name);
 int sysfs_rename_link(struct kobject *kobj, struct kobject *target,
 			const char *old_name, const char *new_name);
 
+void sysfs_delete_link(struct kobject *dir, struct kobject *targ,
+			const char *name);
+
 int __must_check sysfs_create_group(struct kobject *kobj,
 				    const struct attribute_group *grp);
 int sysfs_update_group(struct kobject *kobj,
@@ -168,10 +173,15 @@ void sysfs_remove_file_from_group(struct kobject *kobj,
 void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr);
 void sysfs_notify_dirent(struct sysfs_dirent *sd);
 struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
+				      const void *ns,
 				      const unsigned char *name);
 struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd);
 void sysfs_put(struct sysfs_dirent *sd);
 void sysfs_printk_last_file(void);
+
+/* Called to clear a ns tag when it is no longer valid */
+void sysfs_exit_ns(enum kobj_ns_type type, const void *tag);
+
 int __must_check sysfs_init(void);
 
 #else /* CONFIG_SYSFS */
@@ -264,6 +274,11 @@ static inline int sysfs_rename_link(struct kobject *k, struct kobject *t,
 	return 0;
 }
 
+static inline void sysfs_delete_link(struct kobject *k, struct kobject *t,
+				     const char *name)
+{
+}
+
 static inline int sysfs_create_group(struct kobject *kobj,
 				     const struct attribute_group *grp)
 {
@@ -301,6 +316,7 @@ static inline void sysfs_notify_dirent(struct sysfs_dirent *sd)
 }
 static inline
 struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
+				      const void *ns,
 				      const unsigned char *name)
 {
 	return NULL;
@@ -313,6 +329,10 @@ static inline void sysfs_put(struct sysfs_dirent *sd)
 {
 }
 
+static inline void sysfs_exit_ns(int type, const void *tag)
+{
+}
+
 static inline int __must_check sysfs_init(void)
 {
 	return 0;

kernel/ksysfs.c

@@ -138,7 +138,8 @@ extern const void __start_notes __attribute__((weak));
 extern const void __stop_notes __attribute__((weak));
 #define	notes_size (&__stop_notes - &__start_notes)
 
-static ssize_t notes_read(struct kobject *kobj, struct bin_attribute *bin_attr,
+static ssize_t notes_read(struct file *filp, struct kobject *kobj,
+			  struct bin_attribute *bin_attr,
 			  char *buf, loff_t off, size_t count)
 {
 	memcpy(buf, &__start_notes + off, count);

kernel/lockdep.c

@@ -2711,6 +2711,8 @@ void lockdep_init_map(struct lockdep_map *lock, const char *name,
 }
 EXPORT_SYMBOL_GPL(lockdep_init_map);
 
+struct lock_class_key __lockdep_no_validate__;
+
 /*
  * This gets called for every mutex_lock*()/spin_lock*() operation.
  * We maintain the dependency maps and validate the locking attempt:
@@ -2745,6 +2747,9 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass,
 		return 0;
 	}
 
+	if (lock->key == &__lockdep_no_validate__)
+		check = 1;
+
 	if (!subclass)
 		class = lock->class_cache;
 	/*

kernel/module.c

@@ -1182,7 +1182,7 @@ struct module_notes_attrs {
 	struct bin_attribute attrs[0];
 };
 
-static ssize_t module_notes_read(struct kobject *kobj,
+static ssize_t module_notes_read(struct file *filp, struct kobject *kobj,
 				 struct bin_attribute *bin_attr,
 				 char *buf, loff_t pos, size_t count)
 {

kernel/user_namespace.c

@@ -54,8 +54,8 @@ int create_user_ns(struct cred *new)
 #endif
 	/* tgcred will be cleared in our caller bc CLONE_THREAD won't be set */
 
-	/* alloc_uid() incremented the userns refcount.  Just set it to 1 */
-	kref_set(&ns->kref, 1);
+	/* root_user holds a reference to ns, our reference can be dropped */
+	put_user_ns(ns);
 
 	return 0;
 }

lib/kobject.c

@@ -850,6 +850,121 @@ struct kset *kset_create_and_add(const char *name,
 }
 EXPORT_SYMBOL_GPL(kset_create_and_add);
 
+
+static DEFINE_SPINLOCK(kobj_ns_type_lock);
+static const struct kobj_ns_type_operations *kobj_ns_ops_tbl[KOBJ_NS_TYPES];
+
+int kobj_ns_type_register(const struct kobj_ns_type_operations *ops)
+{
+	enum kobj_ns_type type = ops->type;
+	int error;
+
+	spin_lock(&kobj_ns_type_lock);
+
+	error = -EINVAL;
+	if (type >= KOBJ_NS_TYPES)
+		goto out;
+
+	error = -EINVAL;
+	if (type <= KOBJ_NS_TYPE_NONE)
+		goto out;
+
+	error = -EBUSY;
+	if (kobj_ns_ops_tbl[type])
+		goto out;
+
+	error = 0;
+	kobj_ns_ops_tbl[type] = ops;
+
+out:
+	spin_unlock(&kobj_ns_type_lock);
+	return error;
+}
+
+int kobj_ns_type_registered(enum kobj_ns_type type)
+{
+	int registered = 0;
+
+	spin_lock(&kobj_ns_type_lock);
+	if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES))
+		registered = kobj_ns_ops_tbl[type] != NULL;
+	spin_unlock(&kobj_ns_type_lock);
+
+	return registered;
+}
+
+const struct kobj_ns_type_operations *kobj_child_ns_ops(struct kobject *parent)
+{
+	const struct kobj_ns_type_operations *ops = NULL;
+
+	if (parent && parent->ktype->child_ns_type)
+		ops = parent->ktype->child_ns_type(parent);
+
+	return ops;
+}
+
+const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj)
+{
+	return kobj_child_ns_ops(kobj->parent);
+}
+
+
+const void *kobj_ns_current(enum kobj_ns_type type)
+{
+	const void *ns = NULL;
+
+	spin_lock(&kobj_ns_type_lock);
+	if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES) &&
+	    kobj_ns_ops_tbl[type])
+		ns = kobj_ns_ops_tbl[type]->current_ns();
+	spin_unlock(&kobj_ns_type_lock);
+
+	return ns;
+}
+
+const void *kobj_ns_netlink(enum kobj_ns_type type, struct sock *sk)
+{
+	const void *ns = NULL;
+
+	spin_lock(&kobj_ns_type_lock);
+	if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES) &&
+	    kobj_ns_ops_tbl[type])
+		ns = kobj_ns_ops_tbl[type]->netlink_ns(sk);
+	spin_unlock(&kobj_ns_type_lock);
+
+	return ns;
+}
+
+const void *kobj_ns_initial(enum kobj_ns_type type)
+{
+	const void *ns = NULL;
+
+	spin_lock(&kobj_ns_type_lock);
+	if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES) &&
+	    kobj_ns_ops_tbl[type])
+		ns = kobj_ns_ops_tbl[type]->initial_ns();
+	spin_unlock(&kobj_ns_type_lock);
+
+	return ns;
+}
+
+/*
+ * kobj_ns_exit - invalidate a namespace tag
+ *
+ * @type: the namespace type (i.e. KOBJ_NS_TYPE_NET)
+ * @ns: the actual namespace being invalidated
+ *
+ * This is called when a tag is no longer valid.  For instance,
+ * when a network namespace exits, it uses this helper to
+ * make sure no sb's sysfs_info points to the now-invalidated
+ * netns.
+ */
+void kobj_ns_exit(enum kobj_ns_type type, const void *ns)
+{
+	sysfs_exit_ns(type, ns);
+}
+
+
 EXPORT_SYMBOL(kobject_get);
 EXPORT_SYMBOL(kobject_put);
 EXPORT_SYMBOL(kobject_del);

lib/kobject_uevent.c

@@ -19,18 +19,24 @@
 #include <linux/kobject.h>
 #include <linux/module.h>
 #include <linux/slab.h>
-
+#include <linux/user_namespace.h>
 #include <linux/socket.h>
 #include <linux/skbuff.h>
 #include <linux/netlink.h>
 #include <net/sock.h>
+#include <net/net_namespace.h>
 
 
 u64 uevent_seqnum;
 char uevent_helper[UEVENT_HELPER_PATH_LEN] = CONFIG_UEVENT_HELPER_PATH;
 static DEFINE_SPINLOCK(sequence_lock);
-#if defined(CONFIG_NET)
-static struct sock *uevent_sock;
+#ifdef CONFIG_NET
+struct uevent_sock {
+	struct list_head list;
+	struct sock *sk;
+};
+static LIST_HEAD(uevent_sock_list);
+static DEFINE_MUTEX(uevent_sock_mutex);
 #endif
 
 /* the strings here must match the enum in include/linux/kobject.h */
@@ -77,6 +83,37 @@ out:
 	return ret;
 }
 
+static int kobj_bcast_filter(struct sock *dsk, struct sk_buff *skb, void *data)
+{
+	struct kobject *kobj = data;
+	const struct kobj_ns_type_operations *ops;
+
+	ops = kobj_ns_ops(kobj);
+	if (ops) {
+		const void *sock_ns, *ns;
+		ns = kobj->ktype->namespace(kobj);
+		sock_ns = ops->netlink_ns(dsk);
+		return sock_ns != ns;
+	}
+
+	return 0;
+}
+
+static int kobj_usermode_filter(struct kobject *kobj)
+{
+	const struct kobj_ns_type_operations *ops;
+
+	ops = kobj_ns_ops(kobj);
+	if (ops) {
+		const void *init_ns, *ns;
+		ns = kobj->ktype->namespace(kobj);
+		init_ns = ops->initial_ns();
+		return ns != init_ns;
+	}
+
+	return 0;
+}
+
 /**
  * kobject_uevent_env - send an uevent with environmental data
  *
@@ -100,6 +137,9 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 	u64 seq;
 	int i = 0;
 	int retval = 0;
+#ifdef CONFIG_NET
+	struct uevent_sock *ue_sk;
+#endif
 
 	pr_debug("kobject: '%s' (%p): %s\n",
 		 kobject_name(kobj), kobj, __func__);
@@ -211,7 +251,9 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 
 #if defined(CONFIG_NET)
 	/* send netlink message */
-	if (uevent_sock) {
+	mutex_lock(&uevent_sock_mutex);
+	list_for_each_entry(ue_sk, &uevent_sock_list, list) {
+		struct sock *uevent_sock = ue_sk->sk;
 		struct sk_buff *skb;
 		size_t len;
 
@@ -233,18 +275,21 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 			}
 
 			NETLINK_CB(skb).dst_group = 1;
-			retval = netlink_broadcast(uevent_sock, skb, 0, 1,
-						   GFP_KERNEL);
+			retval = netlink_broadcast_filtered(uevent_sock, skb,
+							    0, 1, GFP_KERNEL,
+							    kobj_bcast_filter,
+							    kobj);
 			/* ENOBUFS should be handled in userspace */
 			if (retval == -ENOBUFS)
 				retval = 0;
 		} else
 			retval = -ENOMEM;
 	}
+	mutex_unlock(&uevent_sock_mutex);
 #endif
 
 	/* call uevent_helper, usually only enabled during early boot */
-	if (uevent_helper[0]) {
+	if (uevent_helper[0] && !kobj_usermode_filter(kobj)) {
 		char *argv [3];
 
 		argv [0] = uevent_helper;
@@ -320,18 +365,58 @@ int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...)
 EXPORT_SYMBOL_GPL(add_uevent_var);
 
 #if defined(CONFIG_NET)
-static int __init kobject_uevent_init(void)
+static int uevent_net_init(struct net *net)
 {
-	uevent_sock = netlink_kernel_create(&init_net, NETLINK_KOBJECT_UEVENT,
-					    1, NULL, NULL, THIS_MODULE);
-	if (!uevent_sock) {
+	struct uevent_sock *ue_sk;
+
+	ue_sk = kzalloc(sizeof(*ue_sk), GFP_KERNEL);
+	if (!ue_sk)
+		return -ENOMEM;
+
+	ue_sk->sk = netlink_kernel_create(net, NETLINK_KOBJECT_UEVENT,
+					  1, NULL, NULL, THIS_MODULE);
+	if (!ue_sk->sk) {
 		printk(KERN_ERR
 		       "kobject_uevent: unable to create netlink socket!\n");
 		return -ENODEV;
 	}
-	netlink_set_nonroot(NETLINK_KOBJECT_UEVENT, NL_NONROOT_RECV);
+	mutex_lock(&uevent_sock_mutex);
+	list_add_tail(&ue_sk->list, &uevent_sock_list);
+	mutex_unlock(&uevent_sock_mutex);
 	return 0;
 }
 
+static void uevent_net_exit(struct net *net)
+{
+	struct uevent_sock *ue_sk;
+
+	mutex_lock(&uevent_sock_mutex);
+	list_for_each_entry(ue_sk, &uevent_sock_list, list) {
+		if (sock_net(ue_sk->sk) == net)
+			goto found;
+	}
+	mutex_unlock(&uevent_sock_mutex);
+	return;
+
+found:
+	list_del(&ue_sk->list);
+	mutex_unlock(&uevent_sock_mutex);
+
+	netlink_kernel_release(ue_sk->sk);
+	kfree(ue_sk);
+}
+
+static struct pernet_operations uevent_net_ops = {
+	.init	= uevent_net_init,
+	.exit	= uevent_net_exit,
+};
+
+static int __init kobject_uevent_init(void)
+{
+	netlink_set_nonroot(NETLINK_KOBJECT_UEVENT, NL_NONROOT_RECV);
+	return register_pernet_subsys(&uevent_net_ops);
+}
+
+
 postcore_initcall(kobject_uevent_init);
 #endif

lib/kref.c

@@ -15,24 +15,14 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 
-/**
- * kref_set - initialize object and set refcount to requested number.
- * @kref: object in question.
- * @num: initial reference counter
- */
-void kref_set(struct kref *kref, int num)
-{
-	atomic_set(&kref->refcount, num);
-	smp_mb();
-}
-
 /**
  * kref_init - initialize object.
  * @kref: object in question.
  */
 void kref_init(struct kref *kref)
 {
-	kref_set(kref, 1);
+	atomic_set(&kref->refcount, 1);
+	smp_mb();
 }
 
 /**
@@ -72,7 +62,6 @@ int kref_put(struct kref *kref, void (*release)(struct kref *kref))
 	return 0;
 }
 
-EXPORT_SYMBOL(kref_set);
 EXPORT_SYMBOL(kref_init);
 EXPORT_SYMBOL(kref_get);
 EXPORT_SYMBOL(kref_put);

net/bridge/br_sysfs_br.c

@@ -659,7 +659,7 @@ static struct attribute_group bridge_group = {
  *
  * Returns the number of bytes read.
  */
-static ssize_t brforward_read(struct kobject *kobj,
+static ssize_t brforward_read(struct file *filp, struct kobject *kobj,
 			      struct bin_attribute *bin_attr,
 			      char *buf, loff_t off, size_t count)
 {

net/core/dev.c

@@ -1002,15 +1002,10 @@ int dev_change_name(struct net_device *dev, const char *newname)
 		return err;
 
 rollback:
-	/* For now only devices in the initial network namespace
-	 * are in sysfs.
-	 */
-	if (net_eq(net, &init_net)) {
-		ret = device_rename(&dev->dev, dev->name);
-		if (ret) {
-			memcpy(dev->name, oldname, IFNAMSIZ);
-			return ret;
-		}
+	ret = device_rename(&dev->dev, dev->name);
+	if (ret) {
+		memcpy(dev->name, oldname, IFNAMSIZ);
+		return ret;
 	}
 
 	write_lock_bh(&dev_base_lock);
@@ -4994,8 +4989,6 @@ int register_netdevice(struct net_device *dev)
 	if (dev->features & NETIF_F_SG)
 		dev->features |= NETIF_F_GSO;
 
-	netdev_initialize_kobject(dev);
-
 	ret = call_netdevice_notifiers(NETDEV_POST_INIT, dev);
 	ret = notifier_to_errno(ret);
 	if (ret)
@@ -5547,15 +5540,6 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
 	if (dev->features & NETIF_F_NETNS_LOCAL)
 		goto out;
 
-#ifdef CONFIG_SYSFS
-	/* Don't allow real devices to be moved when sysfs
-	 * is enabled.
-	 */
-	err = -EINVAL;
-	if (dev->dev.parent)
-		goto out;
-#endif
-
 	/* Ensure the device has been registrered */
 	err = -EINVAL;
 	if (dev->reg_state != NETREG_REGISTERED)
@@ -5606,8 +5590,6 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
 	dev_uc_flush(dev);
 	dev_mc_flush(dev);
 
-	netdev_unregister_kobject(dev);
-
 	/* Actually switch the network namespace */
 	dev_net_set(dev, net);
 
@@ -5620,7 +5602,7 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
 	}
 
 	/* Fixup kobjects */
-	err = netdev_register_kobject(dev);
+	err = device_rename(&dev->dev, dev->name);
 	WARN_ON(err);
 
 	/* Add the device back in the hashes */

net/core/net-sysfs.c

@@ -14,7 +14,9 @@
 #include <linux/netdevice.h>
 #include <linux/if_arp.h>
 #include <linux/slab.h>
+#include <linux/nsproxy.h>
 #include <net/sock.h>
+#include <net/net_namespace.h>
 #include <linux/rtnetlink.h>
 #include <linux/wireless.h>
 #include <linux/vmalloc.h>
@@ -467,6 +469,7 @@ static struct attribute_group wireless_group = {
 	.attrs = wireless_attrs,
 };
 #endif
+#endif /* CONFIG_SYSFS */
 
 #ifdef CONFIG_RPS
 /*
@@ -766,7 +769,38 @@ static void rx_queue_remove_kobjects(struct net_device *net)
 	kset_unregister(net->queues_kset);
 }
 #endif /* CONFIG_RPS */
-#endif /* CONFIG_SYSFS */
+
+static const void *net_current_ns(void)
+{
+	return current->nsproxy->net_ns;
+}
+
+static const void *net_initial_ns(void)
+{
+	return &init_net;
+}
+
+static const void *net_netlink_ns(struct sock *sk)
+{
+	return sock_net(sk);
+}
+
+static struct kobj_ns_type_operations net_ns_type_operations = {
+	.type = KOBJ_NS_TYPE_NET,
+	.current_ns = net_current_ns,
+	.netlink_ns = net_netlink_ns,
+	.initial_ns = net_initial_ns,
+};
+
+static void net_kobj_ns_exit(struct net *net)
+{
+	kobj_ns_exit(KOBJ_NS_TYPE_NET, net);
+}
+
+static struct pernet_operations kobj_net_ops = {
+	.exit = net_kobj_ns_exit,
+};
+
 
 #ifdef CONFIG_HOTPLUG
 static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
@@ -774,9 +808,6 @@ static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
 	struct net_device *dev = to_net_dev(d);
 	int retval;
 
-	if (!net_eq(dev_net(dev), &init_net))
-		return 0;
-
 	/* pass interface to uevent. */
 	retval = add_uevent_var(env, "INTERFACE=%s", dev->name);
 	if (retval)
@@ -806,6 +837,13 @@ static void netdev_release(struct device *d)
 	kfree((char *)dev - dev->padded);
 }
 
+static const void *net_namespace(struct device *d)
+{
+	struct net_device *dev;
+	dev = container_of(d, struct net_device, dev);
+	return dev_net(dev);
+}
+
 static struct class net_class = {
 	.name = "net",
 	.dev_release = netdev_release,
@@ -815,6 +853,8 @@ static struct class net_class = {
 #ifdef CONFIG_HOTPLUG
 	.dev_uevent = netdev_uevent,
 #endif
+	.ns_type = &net_ns_type_operations,
+	.namespace = net_namespace,
 };
 
 /* Delete sysfs entries but hold kobject reference until after all
@@ -826,9 +866,6 @@ void netdev_unregister_kobject(struct net_device * net)
 
 	kobject_get(&dev->kobj);
 
-	if (!net_eq(dev_net(net), &init_net))
-		return;
-
 #ifdef CONFIG_RPS
 	rx_queue_remove_kobjects(net);
 #endif
@@ -843,6 +880,7 @@ int netdev_register_kobject(struct net_device *net)
 	const struct attribute_group **groups = net->sysfs_groups;
 	int error = 0;
 
+	device_initialize(dev);
 	dev->class = &net_class;
 	dev->platform_data = net;
 	dev->groups = groups;
@@ -865,9 +903,6 @@ int netdev_register_kobject(struct net_device *net)
 #endif
 #endif /* CONFIG_SYSFS */
 
-	if (!net_eq(dev_net(net), &init_net))
-		return 0;
-
 	error = device_add(dev);
 	if (error)
 		return error;
@@ -896,13 +931,9 @@ void netdev_class_remove_file(struct class_attribute *class_attr)
 EXPORT_SYMBOL(netdev_class_create_file);
 EXPORT_SYMBOL(netdev_class_remove_file);
 
-void netdev_initialize_kobject(struct net_device *net)
-{
-	struct device *device = &(net->dev);
-	device_initialize(device);
-}
-
 int netdev_kobject_init(void)
 {
+	kobj_ns_type_register(&net_ns_type_operations);
+	register_pernet_subsys(&kobj_net_ops);
 	return class_register(&net_class);
 }

net/core/net-sysfs.h

@@ -4,5 +4,4 @@
 int netdev_kobject_init(void);
 int netdev_register_kobject(struct net_device *);
 void netdev_unregister_kobject(struct net_device *);
-void netdev_initialize_kobject(struct net_device *);
 #endif

net/netlink/af_netlink.c

@@ -978,6 +978,8 @@ struct netlink_broadcast_data {
 	int delivered;
 	gfp_t allocation;
 	struct sk_buff *skb, *skb2;
+	int (*tx_filter)(struct sock *dsk, struct sk_buff *skb, void *data);
+	void *tx_data;
 };
 
 static inline int do_one_broadcast(struct sock *sk,
@@ -1020,6 +1022,9 @@ static inline int do_one_broadcast(struct sock *sk,
 		p->failure = 1;
 		if (nlk->flags & NETLINK_BROADCAST_SEND_ERROR)
 			p->delivery_failure = 1;
+	} else if (p->tx_filter && p->tx_filter(sk, p->skb2, p->tx_data)) {
+		kfree_skb(p->skb2);
+		p->skb2 = NULL;
 	} else if (sk_filter(sk, p->skb2)) {
 		kfree_skb(p->skb2);
 		p->skb2 = NULL;
@@ -1038,8 +1043,10 @@ out:
 	return 0;
 }
 
-int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid,
-		      u32 group, gfp_t allocation)
+int netlink_broadcast_filtered(struct sock *ssk, struct sk_buff *skb, u32 pid,
+	u32 group, gfp_t allocation,
+	int (*filter)(struct sock *dsk, struct sk_buff *skb, void *data),
+	void *filter_data)
 {
 	struct net *net = sock_net(ssk);
 	struct netlink_broadcast_data info;
@@ -1059,6 +1066,8 @@ int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid,
 	info.allocation = allocation;
 	info.skb = skb;
 	info.skb2 = NULL;
+	info.tx_filter = filter;
+	info.tx_data = filter_data;
 
 	/* While we sleep in clone, do not allow to change socket list */
 
@@ -1083,6 +1092,14 @@ int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid,
 	}
 	return -ESRCH;
 }
+EXPORT_SYMBOL(netlink_broadcast_filtered);
+
+int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid,
+		      u32 group, gfp_t allocation)
+{
+	return netlink_broadcast_filtered(ssk, skb, pid, group, allocation,
+		NULL, NULL);
+}
 EXPORT_SYMBOL(netlink_broadcast);
 
 struct netlink_set_err_data {

scripts/checkpatch.pl

@@ -2656,6 +2656,7 @@ sub process {
 # check for semaphores used as mutexes
 		if ($line =~ /^.\s*init_MUTEX_LOCKED\s*\(/) {
 			WARN("consider using a completion\n" . $herecurr);
+
 		}
 # recommend strict_strto* over simple_strto*
 		if ($line =~ /\bsimple_(strto.*?)\s*\(/) {
@@ -2740,6 +2741,16 @@ sub process {
 				WARN("use of in_atomic() is incorrect outside core kernel code\n" . $herecurr);
 			}
 		}
+
+# check for lockdep_set_novalidate_class
+		if ($line =~ /^.\s*lockdep_set_novalidate_class\s*\(/ ||
+		    $line =~ /__lockdep_no_validate__\s*\)/ ) {
+			if ($realfile !~ m@^kernel/lockdep@ &&
+			    $realfile !~ m@^include/linux/lockdep@ &&
+			    $realfile !~ m@^drivers/base/core@) {
+				ERROR("lockdep_no_validate class is reserved for device->mutex.\n" . $herecurr);
+			}
+		}
 	}
 
 	# If we have no input at all, then there is nothing to report on

security/integrity/ima/ima_iint.c

@@ -94,7 +94,7 @@ void iint_free(struct kref *kref)
 		       iint->opencount);
 		iint->opencount = 0;
 	}
-	kref_set(&iint->refcount, 1);
+	kref_init(&iint->refcount);
 	kmem_cache_free(iint_cache, iint);
 }
 
@@ -133,7 +133,7 @@ static void init_once(void *foo)
 	iint->readcount = 0;
 	iint->writecount = 0;
 	iint->opencount = 0;
-	kref_set(&iint->refcount, 1);
+	kref_init(&iint->refcount);
 }
 
 static int __init ima_iintcache_init(void)