From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sam Gandhi <samgandhi9@gmail.com>
Subject: Can someone explain s_xattr field in the superblock?
Date: Tue, 31 May 2011 11:23:33 -0700
Message-ID: <BANLkTikRjT6Ey-ZdMgXnoUaiO8wt0WACQw@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
To: linux-fsdevel@vger.kernel.org
Return-path: <linux-fsdevel-owner@vger.kernel.org>
Received: from mail-iy0-f174.google.com ([209.85.210.174]:52460 "EHLO
	mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751766Ab1EaSXe (ORCPT
	<rfc822;linux-fsdevel@vger.kernel.org>);
	Tue, 31 May 2011 14:23:34 -0400
Received: by iyb14 with SMTP id 14so3862219iyb.19
        for <linux-fsdevel@vger.kernel.org>; Tue, 31 May 2011 11:23:34 -0700 (PDT)
Sender: linux-fsdevel-owner@vger.kernel.org
List-ID: <linux-fsdevel.vger.kernel.org>

Hello,

[ Sorry if this duplicate to some, I posted this message earlier to
linux-kernel probably was not appropriate ]

I have seen some file systems like jffs2/ext4 etc setup the s_xattr
field in the superblock structure.
But there are files systems that  do not initialize s_xattr field in
the superblock.

Can someone kindly explain what functionality  does s_xattr on super
block provides? What kinds of things file system wouldn't be able to
do if the superblock doesn't have this initialized?

Thanks.

-Sam