[src/trunk]: src/sbin/resize_ffs Use howmany() instead of "/" to calculate th...

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

details:   https://anonhg.NetBSD.org/src/rev/3c53dee33b12
branches:  trunk
changeset: 759232:3c53dee33b12
user:      riz <riz%NetBSD.org@localhost>
date:      Thu Dec 02 22:00:27 2010 +0000

description:
Use howmany() instead of "/" to calculate the number of cylinders for
the changed file system, so as to not drop a partial cylinder at the
end.  Fixes PR bin/44177.

diffstat:

 sbin/resize_ffs/resize_ffs.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (29 lines):

diff -r 67c7cc78ca65 -r 3c53dee33b12 sbin/resize_ffs/resize_ffs.c
--- a/sbin/resize_ffs/resize_ffs.c      Thu Dec 02 21:20:39 2010 +0000
+++ b/sbin/resize_ffs/resize_ffs.c      Thu Dec 02 22:00:27 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: resize_ffs.c,v 1.16 2010/12/01 17:39:21 riz Exp $      */
+/*     $NetBSD: resize_ffs.c,v 1.17 2010/12/02 22:00:27 riz Exp $      */
 /* From sources sent on February 17, 2003 */
 /*-
  * As its sole author, I explicitly place this code in the public
@@ -882,7 +882,8 @@
         * to be at least one frag in size.) */
        writeat(newsb->fs_size - 1, &sbbuf, newsb->fs_fsize);
        /* Update fs_old_ncyl and fs_ncg. */
-       newsb->fs_old_ncyl = (newsb->fs_size * NSPF(newsb)) / newsb->fs_old_spc;
+       newsb->fs_old_ncyl = howmany(newsb->fs_size * NSPF(newsb),
+           newsb->fs_old_spc);
        newsb->fs_ncg = howmany(newsb->fs_old_ncyl, newsb->fs_old_cpg);
        /* Does the last cg end before the end of its inode area? There is no
         * reason why this couldn't be handled, but it would complicate a lot
@@ -1521,7 +1522,8 @@
        newsb->fs_time = timestamp();
        /* Update the size figures. */
        newsb->fs_size = dbtofsb(newsb, newsize);
-       newsb->fs_old_ncyl = (newsb->fs_size * NSPF(newsb)) / newsb->fs_old_spc;
+       newsb->fs_old_ncyl = howmany(newsb->fs_size * NSPF(newsb),
+           newsb->fs_old_spc);
        newsb->fs_ncg = howmany(newsb->fs_old_ncyl, newsb->fs_old_cpg);
        /* Does the (new) last cg end before the end of its inode area?  See
         * the similar code in grow() for more on this. */