tree b1417785e3681769def7bb571d9520a2b60f0f22
parent cff298c721099c9ac4cea7196a37097ba2847946
author Bryan Schumaker <bjschuma@netapp.com> 1344535549 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1345152002 -0400

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>