From: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Date: Mon, 1 Oct 2012 09:08:37 +0000 (-0600)
Subject: Btrfs: confirmation of value is added before trace_btrfs_get_extent() is called
X-Git-Tag: v3.7-rc1~71^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f0bd95ea72644cbf9210606f6f8edfce13d65d47;p=pandora-kernel.git

Btrfs: confirmation of value is added before trace_btrfs_get_extent() is called

We should confirm the value of extent_map before calling
trace_btrfs_get_extent() because the value of extent_map has the
possibility of NULL.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
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