From: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Date: Mon, 14 Feb 2011 00:45:29 +0000 (+0000)
Subject: Btrfs: check return value of alloc_extent_map()
X-Git-Tag: v2.6.38-rc5~14^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c26a920373a983b52223eed5a13b97404d8b4158;p=pandora-kernel.git

Btrfs: check return value of alloc_extent_map()

I add the check on the return value of alloc_extent_map() to several places.
In addition, alloc_extent_map() returns only the address or NULL.
Therefore, check by IS_ERR() is unnecessary. So, I remove IS_ERR() checking.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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