[PATCH] sysfs-iattr: add sysfs_setattr

o This adds ->i_op->setattr VFS method for sysfs inodes. The changed
  attribues are saved in the persistent sysfs_dirent structure as a pointer
  to struct iattr. The struct iattr is allocated only for those sysfs_dirent's
  for which default attributes are getting changed. Thanks to Jon Smirl for
  this suggestion.

Signed-off-by: Maneesh Soni <maneesh@in.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 5cf3270..37d7a68 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -233,6 +233,7 @@
 
 struct inode_operations sysfs_dir_inode_operations = {
 	.lookup		= sysfs_lookup,
+	.setattr	= sysfs_setattr,
 };
 
 static void remove_dir(struct dentry * d)