linux-kernel - Can someone explain s_xattr field in the superblock?

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Message-ID: <BANLkTikuz1c9dCB65PqrHCXMSt+7_cS11w@mail.gmail.com>
Date:	Sat, 28 May 2011 08:52:41 -0700
From:	Sam Gandhi <samgandhi9@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Can someone explain s_xattr field in the superblock?

Hello,

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
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