From: NeilBrown <neilb@suse.de>
Date: Thu, 11 Mar 2010 00:20:17 +0000 (+1100)
Subject: NFS: ensure bdi_unregister is called on mount failure.
X-Git-Tag: v2.6.34-rc2~22^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cfbc0683af235106e7dabe92003870b82ad6f0ba;p=pandora-kernel.git

NFS: ensure bdi_unregister is called on mount failure.

bdi_unregister is called by nfs_put_super which is only called by
generic_shutdown_super if ->s_root is not NULL.  So if we error out
in a circumstance where we called nfs_bdi_register (i.e. server !=
NULL) but have not set s_root, then we need to call bdi_unregister
explicitly in nfs_get_sb and various other *_get_sb() functions.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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