[src/trunk]: src/sys/compat/ultrix fix previous, list ends in NULL, and don't...

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

details:   https://anonhg.NetBSD.org/src/rev/233f8e32f5dc
branches:  trunk
changeset: 791580:233f8e32f5dc
user:      christos <christos%NetBSD.org@localhost>
date:      Sat Nov 23 23:34:04 2013 +0000

description:
fix previous, list ends in NULL, and don't open-code

diffstat:

 sys/compat/ultrix/ultrix_fs.c |  15 ++++++++-------
 1 files changed, 8 insertions(+), 7 deletions(-)

diffs (40 lines):

diff -r 29a3c4e87e29 -r 233f8e32f5dc sys/compat/ultrix/ultrix_fs.c
--- a/sys/compat/ultrix/ultrix_fs.c     Sat Nov 23 23:30:39 2013 +0000
+++ b/sys/compat/ultrix/ultrix_fs.c     Sat Nov 23 23:34:04 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ultrix_fs.c,v 1.52 2013/11/23 16:15:25 riz Exp $       */
+/*     $NetBSD: ultrix_fs.c,v 1.53 2013/11/23 23:34:04 christos Exp $  */
 
 /*
  * Copyright (c) 1995, 1997 Jonathan Stone
@@ -33,7 +33,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ultrix_fs.c,v 1.52 2013/11/23 16:15:25 riz Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ultrix_fs.c,v 1.53 2013/11/23 23:34:04 christos Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -248,15 +248,16 @@
                                    sizeof(*SCARG(uap, start))))  != 0)
                        goto bad;
                mutex_enter(&mountlist_lock);
-               for (skip = start, mp = mountlist.tqh_first;
-                   mp != (void*)&mountlist && skip-- > 0; mp = nmp)
-                       nmp = mp->mnt_list.tqe_next;
+               for (skip = start, mp = TAILQ_FIRST(&mountlist);
+                   mp != TAILQ_END(&mountlist) && skip-- > 0;
+                   mp = TAILQ_NEXT(mp, mnt_list))
+                       continue;
                mutex_exit(&mountlist_lock);
        }
 
        mutex_enter(&mountlist_lock);
-       for (count = 0, mp = mountlist.tqh_first;
-           mp != (void*)&mountlist && count < maxcount; mp = nmp) {
+       for (count = 0, mp = TAILQ_FIRST(&mountlist);
+           mp != TAILQ_END(&mountlist) && count < maxcount; mp = nmp) {
                if (vfs_busy(mp, &nmp)) {
                        continue;
                }