reiserfs: remove IS_PRIVATE helpers

There are a number of helper functions for marking a reiserfs inode
private that were leftover from reiserfs did its own thing wrt to
private inodes.  S_PRIVATE has been in the kernel for some time, so this
patch removes the helpers and uses IS_PRIVATE instead.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index fab0373..cd42a86 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -1927,9 +1927,8 @@
 		reiserfs_warning(inode->i_sb, "jdm-13090",
 				 "ACLs aren't enabled in the fs, "
 				 "but vfs thinks they are!");
-	} else if (is_reiserfs_priv_object(dir)) {
-		reiserfs_mark_inode_private(inode);
-	}
+	} else if (IS_PRIVATE(dir))
+		inode->i_flags |= S_PRIVATE;
 
 	reiserfs_update_sd(th, inode);
 	reiserfs_check_path(&path_to_key);