nfsd4: don't set cl_firststate on first reclaim in 4.1 case

We set cl_firststate when we first decide that a client will be
permitted to reclaim state on next boot.  This happens:

	- for new 4.0 clients, when they confirm their first open
	- for returning 4.0 clients, when they reclaim their first open
	- for 4.1+ clients, when they perform reclaim_complete

We also use cl_firststate to decide whether a reclaim_complete has
already been performed, in the 4.1+ case.

We were setting it on 4.1 open reclaims, which caused spurious
COMPLETE_ALREADY errors on RECLAIM_COMPLETE from an nfs4.1 client with
anything to reclaim.

Reported-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 8 insertions, 3 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 967c677c2e54..207c3bd266aa 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2778,10 +2778,15 @@ nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *c
 
 
 static void
-nfs4_set_claim_prev(struct nfsd4_open *open)
+nfs4_set_claim_prev(struct nfsd4_open *open, bool has_session)
 {
         open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
-        open->op_openowner->oo_owner.so_client->cl_firststate = 1;
+        /*
+         * On a 4.1+ client, we don't create a state record for a client
+         * until it performs RECLAIM_COMPLETE:
+         */
+        if (!has_session)
+                open->op_openowner->oo_owner.so_client->cl_firststate = 1;
 }
 
 /* Should we give out recallable state?: */
@@ -3044,7 +3049,7 @@ out:
         if (fp)
                 put_nfs4_file(fp);
         if (status == 0 && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
-                nfs4_set_claim_prev(open);
+                nfs4_set_claim_prev(open, nfsd4_has_session(&resp->cstate));
         /*
         * To finish the open response, we just need to set the rflags.
         */