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nfsd: reject reclaim request when client has already sent RECLAIM_COMPLETE

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As stated in RFC 5661, section 18.51.3:

    Once a RECLAIM_COMPLETE is done, there can be no further reclaim
    operations for locks whose scope is defined as having completed
    recovery.  Once the client sends RECLAIM_COMPLETE, the server will
    not allow the client to do subsequent reclaims of locking state for
    that scope and, if these are attempted, will return
    NFS4ERR_NO_GRACE.

Ensure that we enforce that requirement.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
This commit is contained in:
Jeff Layton 2014-09-12 16:40:22 -04:00 committed by J. Bruce Fields
parent 919b8049f0
commit 3b3e7b7223
1 changed files with 3 additions and 0 deletions
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3
fs/nfsd/nfs4state.c
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@ -5650,6 +5650,9 @@ nfs4_check_open_reclaim(clientid_t *clid,
if (status)
return nfserr_reclaim_bad;
if (test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, &cstate->clp->cl_flags))
return nfserr_no_grace;
if (nfsd4_client_record_check(cstate->clp))
return nfserr_reclaim_bad;