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authorAndrew Elble <aweits@rit.edu>2017-11-03 14:06:31 -0400
committerJ. Bruce Fields <bfields@redhat.com>2017-11-07 16:44:02 -0500
commit95da1b3a5aded124dd1bda1e3cdb876184813140 (patch)
tree6764bb8c88390cdfc1cdee2733b3be6767e3e9e2 /fs/lockd
parentsvcrdma: Enqueue after setting XPT_CLOSE in completion handlers (diff)
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nfsd: deal with revoked delegations appropriately
If a delegation has been revoked by the server, operations using that delegation should error out with NFS4ERR_DELEG_REVOKED in the >4.1 case, and NFS4ERR_BAD_STATEID otherwise. The server needs NFSv4.1 clients to explicitly free revoked delegations. If the server returns NFS4ERR_DELEG_REVOKED, the client will do that; otherwise it may just forget about the delegation and be unable to recover when it later sees SEQ4_STATUS_RECALLABLE_STATE_REVOKED set on a SEQUENCE reply. That can cause the Linux 4.1 client to loop in its stage manager. Signed-off-by: Andrew Elble <aweits@rit.edu> Reviewed-by: Trond Myklebust <trond.myklebust@primarydata.com> Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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