fix macros that calculated bitmap size for fdalloc. fries@ helped debugging.

diff --git a/sys/sys/filedesc.h b/sys/sys/filedesc.h
index ce56b62..e936413 100644 (file)
--- a/sys/sys/filedesc.h
+++ b/sys/sys/filedesc.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: filedesc.h,v 1.7 2000/02/28 18:04:09 provos Exp $     */
+/*     $OpenBSD: filedesc.h,v 1.8 2000/04/24 06:26:23 provos Exp $     */
 /*     $NetBSD: filedesc.h,v 1.14 1996/04/09 20:55:28 cgd Exp $        */
 
 /*
@@ -55,8 +55,9 @@
 #define NDENTRIES      32              /* 32 fds per entry */
 #define NDENTRYMASK    (NDENTRIES - 1)
 #define NDENTRYSHIFT   5               /* bits per entry */
-#define NDLOSLOTS(x)   (((x) + NDENTRIES - 1) >> NDENTRYSHIFT)
-#define NDHISLOTS(x)   ((NDLOSLOTS(x) + NDENTRIES - 1) >> NDENTRYSHIFT)
+#define NDREDUCE(x)    (((x) + NDENTRIES - 1) >> NDENTRYSHIFT)
+#define NDHISLOTS(x)   (NDREDUCE(NDREDUCE(x)))
+#define NDLOSLOTS(x)   (NDHISLOTS(x) << NDENTRYSHIFT)
 
 struct filedesc {
        struct  file **fd_ofiles;       /* file structures for open files */