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| author | Andrew Elble <aweits@rit.edu> | 2017-11-03 14:06:31 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-30 08:37:21 +0000 |
| commit | a8b8ab79ca4fd69182f5864ddcd59994717e0186 (patch) | |
| tree | 6c1924aae08327ca70235a8b3f3d5044396ee91a /fs/locks.c | |
| parent | 2a2d4b41472c73439adc6b8b55fed212d85f4faa (diff) | |
nfsd: deal with revoked delegations appropriately
commit 95da1b3a5aded124dd1bda1e3cdb876184813140 upstream.
If a delegation has been revoked by the server, operations using that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>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/locks.c')
0 files changed, 0 insertions, 0 deletions