[src/trunk]: src/sys/dev Don't truncate disk size to full cylinders.

[mlelstv <mlelstv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/266ad3517f7c
branches:  trunk
changeset: 378368:266ad3517f7c
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Sun Apr 11 18:17:22 2021 +0000

description:
Don't truncate disk size to full cylinders.

diffstat:

 sys/dev/vnd.c |  9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diffs (33 lines):

diff -r 17bd2238a775 -r 266ad3517f7c sys/dev/vnd.c
--- a/sys/dev/vnd.c     Sun Apr 11 17:48:01 2021 +0000
+++ b/sys/dev/vnd.c     Sun Apr 11 18:17:22 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vnd.c,v 1.278 2021/01/04 16:17:26 mlelstv Exp $        */
+/*     $NetBSD: vnd.c,v 1.279 2021/04/11 18:17:22 mlelstv Exp $        */
 
 /*-
  * Copyright (c) 1996, 1997, 1998, 2008, 2020 The NetBSD Foundation, Inc.
@@ -91,7 +91,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vnd.c,v 1.278 2021/01/04 16:17:26 mlelstv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vnd.c,v 1.279 2021/04/11 18:17:22 mlelstv Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_vnd.h"
@@ -2104,11 +2104,12 @@ static void
 vnd_set_geometry(struct vnd_softc *vnd)
 {
        struct disk_geom *dg = &vnd->sc_dkdev.dk_geom;
+       unsigned spb;
 
        memset(dg, 0, sizeof(*dg));
 
-       dg->dg_secperunit = (int64_t)vnd->sc_geom.vng_nsectors *
-           vnd->sc_geom.vng_ntracks * vnd->sc_geom.vng_ncylinders;
+       spb = vnd->sc_geom.vng_secsize / DEV_BSIZE;
+       dg->dg_secperunit = vnd->sc_size / spb;
        dg->dg_secsize = vnd->sc_geom.vng_secsize;
        dg->dg_nsectors = vnd->sc_geom.vng_nsectors;
        dg->dg_ntracks = vnd->sc_geom.vng_ntracks;