3 files changed, 40 insertions, 30 deletions

diff --git a/Documentation/filesystems/sysfs-pci.txt b/Documentation/filesystems/sysfs-pci.txt
index 68ef48839c04..9f8740ca3f3b 100644
--- a/Documentation/filesystems/sysfs-pci.txt
+++ b/Documentation/filesystems/sysfs-pci.txt
@@ -9,6 +9,7 @@ that support it.  For example, a given bus might look like this:
      |   |-- class
      |   |-- config
      |   |-- device
+     |   |-- enable
      |   |-- irq
      |   |-- local_cpus
      |   |-- resource
@@ -32,6 +33,7 @@ files, each with their own function.
        class               PCI class (ascii, ro)
        config              PCI config space (binary, rw)
        device              PCI device (ascii, ro)
+       enable              Whether the device is enabled (ascii, rw)
        irq                 IRQ number (ascii, ro)
        local_cpus          nearby CPU mask (cpumask, ro)
        resource            PCI resource host addresses (ascii, ro)
@@ -57,10 +59,19 @@ used to do actual device programming from userspace.  Note that some platforms
 don't support mmapping of certain resources, so be sure to check the return
 value from any attempted mmap.
 
+The 'enable' file provides a counter that indicates how many times the device 
+has been enabled.  If the 'enable' file currently returns '4', and a '1' is
+echoed into it, it will then return '5'.  Echoing a '0' into it will decrease
+the count.  Even when it returns to 0, though, some of the initialisation
+may not be reversed.  
+
 The 'rom' file is special in that it provides read-only access to the device's
 ROM file, if available.  It's disabled by default, however, so applications
 should write the string "1" to the file to enable it before attempting a read
-call, and disable it following the access by writing "0" to the file.
+call, and disable it following the access by writing "0" to the file.  Note
+that the device must be enabled for a rom read to return data succesfully.
+In the event a driver is not bound to the device, it can be enabled using the
+'enable' file, documented above.
 
 Accessing legacy resources through sysfs
 ----------------------------------------
diff --git a/Documentation/filesystems/sysfs.txt b/Documentation/filesystems/sysfs.txt
index 9e9c348275a9..7e81e37c0b1e 100644
--- a/Documentation/filesystems/sysfs.txt
+++ b/Documentation/filesystems/sysfs.txt
@@ -2,8 +2,10 @@
 sysfs - _The_ filesystem for exporting kernel objects. 
 
 Patrick Mochel  <mochel@osdl.org>
+Mike Murphy <mamurph@cs.clemson.edu>
 
-10 January 2003
+Revised:    22 February 2009
+Original:   10 January 2003
 
 
 What it is:
@@ -64,12 +66,13 @@ An attribute definition is simply:
 
 struct attribute {
         char                    * name;
+        struct module           *owner;
         mode_t                  mode;
 };
 
 
-int sysfs_create_file(struct kobject * kobj, struct attribute * attr);
-void sysfs_remove_file(struct kobject * kobj, struct attribute * attr);
+int sysfs_create_file(struct kobject * kobj, const struct attribute * attr);
+void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr);
 
 
 A bare attribute contains no means to read or write the value of the
@@ -80,9 +83,11 @@ a specific object type.
 For example, the driver model defines struct device_attribute like:
 
 struct device_attribute {
-        struct attribute        attr;
-        ssize_t (*show)(struct device * dev, char * buf);
-        ssize_t (*store)(struct device * dev, const char * buf);
+        struct attribute        attr;
+        ssize_t (*show)(struct device *dev, struct device_attribute *attr,
+                        char *buf);
+        ssize_t (*store)(struct device *dev, struct device_attribute *attr,
+                         const char *buf, size_t count);
 };
 
 int device_create_file(struct device *, struct device_attribute *);
@@ -90,12 +95,8 @@ void device_remove_file(struct device *, struct device_attribute *);
 
 It also defines this helper for defining device attributes: 
 
-#define DEVICE_ATTR(_name, _mode, _show, _store)      \
-struct device_attribute dev_attr_##_name = {            \
-        .attr = {.name  = __stringify(_name) , .mode   = _mode },      \
-        .show   = _show,                                \
-        .store  = _store,                               \
-};
+#define DEVICE_ATTR(_name, _mode, _show, _store) \
+struct device_attribute dev_attr_##_name = __ATTR(_name, _mode, _show, _store)
 
 For example, declaring
 
@@ -107,9 +108,9 @@ static struct device_attribute dev_attr_foo = {
        .attr    = {
                 .name = "foo",
                 .mode = S_IWUSR | S_IRUGO,
+                .show = show_foo,
+                .store = store_foo,
         },
-        .show = show_foo,
-        .store = store_foo,
 };
 
 
@@ -161,10 +162,12 @@ To read or write attributes, show() or store() methods must be
 specified when declaring the attribute. The method types should be as
 simple as those defined for device attributes:
 
-        ssize_t (*show)(struct device * dev, char * buf);
-        ssize_t (*store)(struct device * dev, const char * buf);
+ssize_t (*show)(struct device * dev, struct device_attribute * attr,
+                char * buf);
+ssize_t (*store)(struct device * dev, struct device_attribute * attr,
+                 const char * buf);
 
-IOW, they should take only an object and a buffer as parameters. 
+IOW, they should take only an object, an attribute, and a buffer as parameters.
 
 
 sysfs allocates a buffer of size (PAGE_SIZE) and passes it to the
@@ -299,14 +302,16 @@ The following interface layers currently exist in sysfs:
 Structure:
 
 struct device_attribute {
-        struct attribute        attr;
-        ssize_t (*show)(struct device * dev, char * buf);
-        ssize_t (*store)(struct device * dev, const char * buf);
+        struct attribute        attr;
+        ssize_t (*show)(struct device *dev, struct device_attribute *attr,
+                        char *buf);
+        ssize_t (*store)(struct device *dev, struct device_attribute *attr,
+                         const char *buf, size_t count);
 };
 
 Declaring:
 
-DEVICE_ATTR(_name, _str, _mode, _show, _store);
+DEVICE_ATTR(_name, _mode, _show, _store);
 
 Creation/Removal:
 
@@ -342,7 +347,8 @@ Structure:
 struct driver_attribute {
         struct attribute        attr;
         ssize_t (*show)(struct device_driver *, char * buf);
-        ssize_t (*store)(struct device_driver *, const char * buf);
+        ssize_t (*store)(struct device_driver *, const char * buf,
+                         size_t count);
 };
 
 Declaring:
diff --git a/Documentation/filesystems/ubifs.txt b/Documentation/filesystems/ubifs.txt
index 84da2a4ba25a..12fedb7834c6 100644
--- a/Documentation/filesystems/ubifs.txt
+++ b/Documentation/filesystems/ubifs.txt
@@ -79,13 +79,6 @@ Mount options
 
 (*) == default.
 
-norm_unmount (*)        commit on unmount; the journal is committed
-                        when the file-system is unmounted so that the
-                        next mount does not have to replay the journal
-                        and it becomes very fast;
-fast_unmount            do not commit on unmount; this option makes
-                        unmount faster, but the next mount slower
-                        because of the need to replay the journal.
 bulk_read               read more in one go to take advantage of flash
                         media that read faster sequentially
 no_bulk_read (*)        do not bulk-read