From: Liu Bo <bo.li.liu@oracle.com>
Date: Wed, 28 Nov 2012 10:43:12 +0000 (+0000)
Subject: Btrfs: don't add a NULL extended attribute
X-Git-Tag: v3.8-rc1~71^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01e6deb25ae11e7b85484bf5e550eb540c50c63e;p=pandora-kernel.git

Btrfs: don't add a NULL extended attribute

Passing a null extended attribute value means to remove the attribute,
but we don't have to add a new NULL extended attribute.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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