From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 25 Jan 2010 11:16:19 +0000 (-0500)
Subject: fix oops in fs/9p late mount failure
X-Git-Tag: v2.6.33-rc6~8^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=083c73c253c23c20359a344dfe1198ea628e6259;p=pandora-kernel.git

fix oops in fs/9p late mount failure

if 9P ->get_sb() fails late (at root inode or root dentry
allocation), we'll hit its ->kill_sb() with NULL ->s_root

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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