From: Chris Mason <chris.mason@oracle.com>
Date: Sun, 6 Nov 2011 23:50:56 +0000 (-0500)
Subject: Btrfs: check for a null fs root when writing to the backup root log
X-Git-Tag: v3.2-rc1~21^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c7e82a77fe3d89ae50824aa7c897454675eb4c4;p=pandora-kernel.git

Btrfs: check for a null fs root when writing to the backup root log

During log replay, can commit the transaction before the fs_root
pointers are setup, so we have to make sure they are not null before
trying to use them.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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