NFSv4: Clean up nfs4_open_delegation_recall

Make it symmetric with nfs4_lock_delegation_recall
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4proc.c

@@ -1379,33 +1379,27 @@ static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *sta
 	return ret;
 }
 
-static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
+int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
 {
+	struct nfs_server *server = NFS_SERVER(state->inode);
 	struct nfs4_opendata *opendata;
-	int ret;
+	int err;
 
 	opendata = nfs4_open_recoverdata_alloc(ctx, state,
 			NFS4_OPEN_CLAIM_DELEG_CUR_FH);
 	if (IS_ERR(opendata))
 		return PTR_ERR(opendata);
 	nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);
-	ret = nfs4_open_recover(opendata, state);
+	err = nfs4_open_recover(opendata, state);
 	nfs4_opendata_put(opendata);
-	return ret;
-}
-
-int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
-{
-	struct nfs4_exception exception = { };
-	struct nfs_server *server = NFS_SERVER(state->inode);
-	int err;
-	do {
-		err = _nfs4_open_delegation_recall(ctx, state, stateid);
 	switch (err) {
+		default:
+			printk(KERN_ERR "NFS: %s: unhandled error "
+					"%d.\n", __func__, err);
 		case 0:
 		case -ENOENT:
 		case -ESTALE:
-				goto out;
+			break;
 		case -NFS4ERR_BADSESSION:
 		case -NFS4ERR_BADSLOT:
 		case -NFS4ERR_BAD_HIGH_SLOT:
@@ -1413,16 +1407,14 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
 		case -NFS4ERR_DEADSESSION:
 			set_bit(NFS_DELEGATED_STATE, &state->flags);
 			nfs4_schedule_session_recovery(server->nfs_client->cl_session, err);
-				err = -EAGAIN;
-				goto out;
+			return -EAGAIN;
 		case -NFS4ERR_STALE_CLIENTID:
 		case -NFS4ERR_STALE_STATEID:
 			set_bit(NFS_DELEGATED_STATE, &state->flags);
 		case -NFS4ERR_EXPIRED:
 			/* Don't recall a delegation if it was lost */
 			nfs4_schedule_lease_recovery(server->nfs_client);
-				err = -EAGAIN;
-				goto out;
+			return -EAGAIN;
 		case -NFS4ERR_DELEG_REVOKED:
 		case -NFS4ERR_ADMIN_REVOKED:
 		case -NFS4ERR_BAD_STATEID:
@@ -1430,19 +1422,13 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
 					stateid);
 			nfs4_schedule_stateid_recovery(server, state);
 		case -ENOMEM:
-				err = 0;
-				goto out;
+			return 0;
 		case -NFS4ERR_DELAY:
 		case -NFS4ERR_GRACE:
 			set_bit(NFS_DELEGATED_STATE, &state->flags);
 			ssleep(1);
-				err = -EAGAIN;
-				goto out;
+			return -EAGAIN;
 	}
-		set_bit(NFS_DELEGATED_STATE, &state->flags);
-		err = nfs4_handle_exception(server, err, &exception);
-	} while (exception.retry);
-out:
 	return err;
 }