From: Rui Xiang <rui.xiang@huawei.com>
Date: Tue, 12 Nov 2013 23:06:55 +0000 (-0800)
Subject: ocfs2: add necessary check in case sb_getblk() fails
X-Git-Tag: v3.13-rc1~106^2~259
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=58796207cf09552706b0c3e0669f2ce52ea6cee1;p=pandora-kernel.git

ocfs2: add necessary check in case sb_getblk() fails

sb_getblk() may return an err, so add a check for bh.

[joseph.qi@huawei.com: also add a check after calling sb_getblk() in ocfs2_create_xattr_block()]
Signed-off-by: Rui Xiang <rui.xiang@huawei.com>
Reviewed-by: Jie Liu <jeff.liu@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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