From: Bryan Schumaker <bjschuma@netapp.com>
Date: Thu, 9 Aug 2012 18:05:49 +0000 (-0400)
Subject: NFS: Clear key construction data if the idmap upcall fails
X-Git-Tag: v3.6-rc3~6^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c5066945b7ea346a11424dbeb7830b7d7d00c206;p=pandora-kernel.git

NFS: Clear key construction data if the idmap upcall fails

idmap_pipe_downcall already clears this field if the upcall succeeds,
but if it fails (rpc.idmapd isn't running) the field will still be set
on the next call triggering a BUG_ON().  This patch tries to handle all
possible ways that the upcall could fail and clear the idmap key data
for each one.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Tested-by: William Dauchy <wdauchy@gmail.com>
Cc: stable@vger.kernel.org [>= 3.4]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---

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