Olga Kornievskaia dcf4b6e710 NFSD: fix error handling in NFSv4.0 callbacks
[ Upstream commit b4250dd868d1b42c0a65de11ef3afbee67ba5d2f ]

When the server tries to do a callback and a client fails it due to
authentication problems, we need the server to set callback down
flag in RENEW so that client can recover.

Suggested-by: Bruce Fields <bfields@redhat.com>
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Benjamin Coddington <bcodding@redhat.com>
Link: https://lore.kernel.org/linux-nfs/FB84E90A-1A03-48B3-8BF7-D9D10AC2C9FE@oracle.com/T/#t
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-04-07 14:47:39 +02:00
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