#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017 Red Hat, Inc.  All Rights Reserved.
#
# FS QA Test 443
#
# Takes page fault while writev is iterating over the vectors in the IOV
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
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()
{
	cd /
	rm -f $tmp.*
}

# get standard environment, filters and checks
. ./common/rc
. ./common/filter

# remove previous $seqres.full before test
rm -f $seqres.full

# real QA test starts here
_supported_fs generic
_require_test
_require_test_program "writev_on_pagefault"

# This program use several vectors for writev(), the kernel goes over them
# one at a time, copying them from userspace, getting the user data ready
# for IO. If it takes a page fault while iterating over the vectors in the
# IOV, it stops, and sends what it got so far. We try to find a bug at this
# moment.
$here/src/writev_on_pagefault $TEST_DIR/testfile.$seq

# success, all done
status=0
exit