diff options
Diffstat (limited to 'sys/sys/param.h')
| -rw-r--r-- | sys/sys/param.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/sys/param.h b/sys/sys/param.h index badddcacc77f..fb15db352811 100644 --- a/sys/sys/param.h +++ b/sys/sys/param.h @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)param.h 8.3 (Berkeley) 4/4/95 - * $Id: param.h,v 1.37 1998/10/16 04:28:04 jkh Exp $ + * $Id: param.h,v 1.38 1998/10/16 06:55:07 jkh Exp $ */ #ifndef _SYS_PARAM_H_ @@ -227,4 +227,10 @@ #define FSHIFT 11 /* bits to right of fixed binary point */ #define FSCALE (1<<FSHIFT) +#define dbtoc(db) /* calculates devblks to pages */ \ + ((db + (ctodb(1) - 1)) >> (PAGE_SHIFT - DEV_BSHIFT)) + +#define ctodb(db) /* calculates pages to devblks */ \ + ((db) << (PAGE_SHIFT - DEV_BSHIFT)) + #endif /* _SYS_PARAM_H_ */ |