[PATCH] nfsd4: ERR_GRACE should bump seqid on lock

A GRACE or NOGRACE response to a lock request should also bump the sequence
id.  So we delay the handling of grace period errors till after we've found
the relevant owner.
Signed-off-by: NJ. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: NNeil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

fs/nfsd/nfs4state.c

@@ -2706,11 +2706,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_lock
 		(long long) lock->lk_offset,
 		(long long) lock->lk_length);
 
-	if (nfs4_in_grace() && !lock->lk_reclaim)
-		return nfserr_grace;
-	if (!nfs4_in_grace() && lock->lk_reclaim)
-		return nfserr_no_grace;
-
 	if (check_lock_length(lock->lk_offset, lock->lk_length))
 		 return nfserr_inval;
 
@@ -2785,6 +2780,13 @@ nfsd4_lock(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_lock
 		goto out;
 	}
 
+	status = nfserr_grace;
+	if (nfs4_in_grace() && !lock->lk_reclaim)
+		goto out;
+	status = nfserr_no_grace;
+	if (!nfs4_in_grace() && lock->lk_reclaim)
+		goto out;
+
 	locks_init_lock(&file_lock);
 	switch (lock->lk_type) {
 		case NFS4_READ_LT: