calculate size for read ahead block

SCCS-vsn: sys/sys/systm.h 4.23

diff --git a/usr/src/sys/sys/systm.h b/usr/src/sys/sys/systm.h
index 66a3c78..c96feb5 100644 (file)
--- a/usr/src/sys/sys/systm.h
+++ b/usr/src/sys/sys/systm.h
@@ -1,4 +1,4 @@
-/*     systm.h 4.22    81/11/26        */
+/*     systm.h 4.23    82/06/07        */

 
 /*
  * Random set of variables
 
 /*
  * Random set of variables


@@ -45,6 +45,7 @@ int   physmem;                /* physical memory on this CPU */
 int    nswap;                  /* size of swap space */
 int    updlock;                /* lock for sync */
 daddr_t        rablock;                /* block to be read ahead */
 int    nswap;                  /* size of swap space */
 int    updlock;                /* lock for sync */
 daddr_t        rablock;                /* block to be read ahead */

+int    rasize;                 /* size of block in rablock */

 extern int intstack[];         /* stack for interrupts */
 dev_t  rootdev;                /* device of the root */
 dev_t  dumpdev;                /* device to take dumps on */
 extern int intstack[];         /* stack for interrupts */
 dev_t  rootdev;                /* device of the root */
 dev_t  dumpdev;                /* device to take dumps on */