--- /dev/null
+#! /bin/sh
+# FSQA Test No. 133
+#
+# Concurrent I/O to same file to ensure no deadlocks
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2006 Silicon Graphics, Inc. All Rights Reserved.
+#-----------------------------------------------------------------------
+#
+# creator
+owner=lachlan@sgi.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ _cleanup_testdir
+}
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+# real QA test starts here
+_supported_fs xfs
+_supported_os Linux IRIX
+
+_setup_testdir
+
+echo "Buffered writer, buffered reader"
+xfs_io -f -c 'pwrite -q -b 64k 0 512m' $testdir/io_test &
+sleep 1
+xfs_io -c 'pread -q -b 64k 0 512m' $testdir/io_test
+wait
+rm $testdir/io_test
+
+echo "Direct writer, buffered reader"
+xfs_io -f -d -c 'pwrite -q -b 64k 0 512m' $testdir/io_test &
+sleep 1
+xfs_io -c 'pread -q -b 64k 0 512m' $testdir/io_test
+wait
+rm $testdir/io_test
+
+echo "Buffered writer, direct reader"
+xfs_io -f -c 'pwrite -q -b 64k 0 512m' $testdir/io_test &
+sleep 1
+xfs_io -d -c 'pread -q -b 64k 0 512m' $testdir/io_test
+wait
+rm $testdir/io_test
+
+echo "Direct writer, direct reader"
+xfs_io -f -d -c 'pwrite -q -b 64k 0 512m' $testdir/io_test &
+sleep 1
+xfs_io -d -c 'pread -q -b 64k 0 512m' $testdir/io_test
+wait
+rm $testdir/io_test
+
+status=0
+exit
--- /dev/null
+QA output created by 133
+Buffered writer, buffered reader
+Direct writer, buffered reader
+Buffered writer, direct reader
+Direct writer, direct reader