From: Josef Bacik <jbacik@fusionio.com>
Date: Thu, 2 Aug 2012 14:23:59 +0000 (-0400)
Subject: Btrfs: do not strdup non existent strings
X-Git-Tag: v3.6-rc4~6^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=99f5944b8477914406173b47b4f261356286730b;p=pandora-kernel.git

Btrfs: do not strdup non existent strings

When we close devices we add back empty devices for some reason that escapes
me.  In the case of a missing dev we don't allocate an rcu_string for it's
name, so check to see if the device has a name and if it doesn't don't
bother strdup()'ing it.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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