126 	int		bd_open;	/* reference counter */  member
149 static int bd_open(struct open_file *f, ...);
163 	.dv_open = bd_open,
175 	.dv_open = bd_open,
187 	.dv_open = bd_open,
830 bd_open(struct open_file *f, ...)  in bd_open()  function
854 	if (bd->bd_open == 0)  in bd_open()
856 	bd->bd_open++;  in bd_open()
863 			bd->bd_open--;  in bd_open()
864 			if (bd->bd_open == 0) {  in bd_open()
885 	bd->bd_open--;  in bd_close()
886 	if (bd->bd_open == 0) {  in bd_close()