From: Eric Paris <eparis@redhat.com>
Date: Tue, 23 Feb 2010 19:43:04 +0000 (+0000)
Subject: Btrfs: use RB_ROOT to intialize rb_trees instead of setting rb_node to NULL
X-Git-Tag: v2.6.34-rc2~278^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6bef4d317193d3badbbfa3f3c593758ace84a629;p=pandora-kernel.git

Btrfs: use RB_ROOT to intialize rb_trees instead of setting rb_node to NULL

btrfs inialize rb trees in quite a number of places by settin rb_node =
NULL;  The problem with this is that 17d9ddc72fb8bba0d4f678 in the
linux-next tree adds a new field to that struct which needs to be NULL for
the new rbtree library code to work properly.  This patch uses RB_ROOT as
the intializer so all of the relevant fields will be NULL'd.  Without the
patch I get a panic.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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