+#define cfs_write_lock_irqsave(l, f) do {f = 0; cfs_write_lock(l);} while(0)
+#define cfs_write_unlock_irqrestore(l, f) do {cfs_write_unlock(l);} while(0)
+#define cfs_read_lock_irqsave(l, f do {f=0; cfs_read_lock(l);} while(0)
+#define cfs_read_unlock_irqrestore(l, f) do {cfs_read_unlock(l);} while(0)