NFSv4.1: change nfs4_free_slot parameters for dynamic slots

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4proc.c

@@ -363,9 +363,8 @@ static void renew_lease(const struct nfs_server *server, unsigned long timestamp
  * Must be called while holding tbl->slot_tbl_lock
  */
 static void
-nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot)
+nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid)
 {
-	int free_slotid = free_slot - tbl->slots;
 	int slotid = free_slotid;
 
 	BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE);
@@ -430,7 +429,7 @@ static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
 	}
 
 	spin_lock(&tbl->slot_tbl_lock);
-	nfs4_free_slot(tbl, res->sr_slot);
+	nfs4_free_slot(tbl, res->sr_slot - tbl->slots);
 	nfs4_check_drain_fc_complete(res->sr_session);
 	spin_unlock(&tbl->slot_tbl_lock);
 	res->sr_slot = NULL;