Index: user/pho/stress2/misc/trim.sh
===================================================================
--- user/pho/stress2/misc/trim.sh	(revision 351686)
+++ user/pho/stress2/misc/trim.sh	(revision 351687)
@@ -1,71 +1,74 @@
 #!/bin/sh
 
 #
 # Copyright (c) 2011 Peter Holm <pho@FreeBSD.org>
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 # 1. Redistributions of source code must retain the above copyright
 #    notice, this list of conditions and the following disclaimer.
 # 2. Redistributions in binary form must reproduce the above copyright
 #    notice, this list of conditions and the following disclaimer in the
 #    documentation and/or other materials provided with the distribution.
 #
 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 # SUCH DAMAGE.
 #
 # $FreeBSD$
 #
 
 [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
 
 # Run with marcus.cfg on a malloc backed MD with option trim.
+# Various panics seen with WiP kernel code. For example:
+# panic: Bad tailq head 0xfffff80160cb7170 first->prev != head
 
 . ../default.cfg
 
 malloc_wait=`sysctl vm.md_malloc_wait | awk {'print $NF}'`
 [ $malloc_wait != 1 ] && sysctl vm.md_malloc_wait=1
 mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
 mdconfig -l | grep -q md$mdstart &&  mdconfig -d -u $mdstart
 
 size="128m"
 [ `uname -m` = "amd64" ] && size="1g"
 [ $# -eq 0 ] && trim=-t
 s=0
 opt=""
 [ "$newfs_flags" = "-U" ] && opt="-U -j"
+export MAXSWAPPCT=80
 for flag in ' ' $opt; do
 	echo "mdconfig -a -t malloc -o reserve -s $size -u $mdstart"
 	mdconfig -a -t malloc -o reserve -s $size -u $mdstart || exit 1
 	bsdlabel -w md$mdstart auto
 
 	echo "newfs $trim $flag md${mdstart}$part"
 	newfs $trim $flag md${mdstart}$part > /dev/null
 	mount /dev/md${mdstart}$part $mntpoint || exit 1
 	chmod 777 $mntpoint
 
-	export runRUNTIME=10m
+	export runRUNTIME=5m
 	export RUNDIR=$mntpoint/stressX
 
 	su $testuser -c 'cd ..; ./run.sh marcus.cfg' > /dev/null 2>&1
 
 	for i in `jot 6`; do
 		umount $mntpoint && break || sleep 10
 	done
 	[ $i -eq 6 ] && { s=1; break; }
 	checkfs /dev/md${mdstart}$part || s=1
 	mdconfig -d -u $mdstart
 done
 [ $malloc_wait != 1 ] && sysctl vm.md_malloc_wait=$malloc_wait
 exit $s