8 files changed, 83 insertions, 9 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 241b96bcd7ad..7bb9f426f3e6 100644
--- a/include/linux/device.h
+++ b/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);
diff --git a/include/linux/firmware.h b/include/linux/firmware.h
index 043811f0d277..53d1e6c4f848 100644
--- a/include/linux/firmware.h
+++ b/include/linux/firmware.h
@@ -12,6 +12,7 @@
 struct firmware {
         size_t size;
         const u8 *data;
+        struct page **pages;
 };
 
 struct device;
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 3950d3c2850d..cf343a852534 100644
--- a/include/linux/kobject.h
+++ b/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.
  *
diff --git a/include/linux/kref.h b/include/linux/kref.h
index baf4b9e4b194..6cc38fc07ab7 100644
--- a/include/linux/kref.h
+++ b/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));
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index a03977a96d7e..06aed8305bf3 100644
--- a/include/linux/lockdep.h
+++ b/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
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 6eaca5e1e8ca..59d066936ab9 100644
--- a/include/linux/netlink.h
+++ b/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);
diff --git a/include/linux/ramfs.h b/include/linux/ramfs.h
index 4e768dda87b0..8600508c77a6 100644
--- a/include/linux/ramfs.h
+++ b/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
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index f0496b3d1811..f2694eb4dd3d 100644
--- a/include/linux/sysfs.h
+++ b/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;