From: Wang Sheng-Hui <shhuiw@gmail.com>
Date: Fri, 22 Jul 2011 13:50:13 +0000 (-0500)
Subject: ext2: check xattr name_len before acquiring xattr_sem in ext2_xattr_get
X-Git-Tag: v3.1-rc1~224^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03b5bb342978f99f75fb36d69cd29bab32109fd4;p=pandora-kernel.git

ext2: check xattr name_len before acquiring xattr_sem in ext2_xattr_get

In ext2_xattr_get(), the code will acquire xattr_sem first, later checks
the length of xattr name_len > 255. It's unnecessarily time consuming and
also ext2_xattr_set() checks the length before other checks. So move the
check before acquiring xattr_sem to make these two functions consistent.

Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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