nfsd: reject reclaim request when client has already sent RECLAIM_COMPLETE
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>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index bed41f7..08fb273 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -5650,6 +5650,9 @@
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;