From: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Date: Tue, 29 May 2012 09:10:13 +0000 (+0900)
Subject: Btrfs: return value of btrfs_read_buffer is checked correctly
X-Git-Tag: v3.5-rc1~17^2~1^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=018642a1f197887058e97291460b890d296e8953;p=pandora-kernel.git

Btrfs: return value of btrfs_read_buffer is checked correctly

btrfs_read_buffer() has the possibility of returning the error.
Therefore, I add the code in which the return value of btrfs_read_buffer()
is checked.

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