sysfs: restore count parameter to struct sysfs_ops::store().

- Fixup subsys_sysfs_ops along the way.

fs/sysfs/inode.c

@@ -167,14 +167,15 @@ subsys_attr_show(struct kobject * kobj, struct attribute * attr, char * page)
 }
 
 static ssize_t 
-subsys_attr_store(struct kobject * kobj, struct attribute * attr, const char * page)
+subsys_attr_store(struct kobject * kobj, struct attribute * attr, 
+		  const char * page, size_t count)
 {
 	struct subsystem * s = to_subsys(kobj);
 	struct subsys_attribute * sattr = to_sattr(attr);
 	ssize_t ret = 0;
 
 	if (sattr->store)
-		ret = sattr->store(s,page);
+		ret = sattr->store(s,page,count);
 	return ret;
 }
 
@@ -322,13 +323,14 @@ fill_write_buffer(struct sysfs_buffer * buffer, const char * buf, size_t count)
  *	passing the buffer that we acquired in fill_write_buffer().
  */
 
-static int flush_write_buffer(struct file * file, struct sysfs_buffer * buffer)
+static int 
+flush_write_buffer(struct file * file, struct sysfs_buffer * buffer, size_t count)
 {
 	struct attribute * attr = file->f_dentry->d_fsdata;
 	struct kobject * kobj = file->f_dentry->d_parent->d_fsdata;
 	struct sysfs_ops * ops = buffer->ops;
 
-	return ops->store(kobj,attr,buffer->page);
+	return ops->store(kobj,attr,buffer->page,count);
 }
 
 
@@ -356,7 +358,7 @@ sysfs_write_file(struct file *file, const char *buf, size_t count, loff_t *ppos)
 
 	count = fill_write_buffer(buffer,buf,count);
 	if (count > 0)
-		count = flush_write_buffer(file,buffer);
+		count = flush_write_buffer(file,buffer,count);
 	if (count > 0)
 		*ppos += count;
 	return count;

include/linux/kobject.h

@@ -166,7 +166,7 @@ static inline void subsys_put(struct subsystem * s)
 struct subsys_attribute {
 	struct attribute attr;
 	ssize_t (*show)(struct subsystem *, char *);
-	ssize_t (*store)(struct subsystem *, const char *); 
+	ssize_t (*store)(struct subsystem *, const char *, size_t); 
 };
 
 extern int subsys_create_file(struct subsystem * , struct subsys_attribute *);

include/linux/sysfs.h

@@ -18,7 +18,7 @@ struct attribute {
 
 struct sysfs_ops {
 	ssize_t	(*show)(struct kobject *, struct attribute *,char *);
-	ssize_t	(*store)(struct kobject *,struct attribute *,const char *);
+	ssize_t	(*store)(struct kobject *,struct attribute *,const char *, size_t);
 };
 
 extern int