From: Maneesh Soni <maneesh@in.ibm.com>

o This patch implements the sysfs_dir_operations file_operations strucutre for
  sysfs directories. It uses the sysfs_dirent based tree for ->readdir() and
  ->lseek() methods instead of simple_dir_operations which use dentry based
  tree.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>