#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright 2020 Google LLC
#
# FS QA Test No. 596
#
# Regression test for the bug fixed by commit 10a98cb16d80 ("xfs: clear
# PF_MEMALLOC before exiting xfsaild thread").  If the bug exists, a kernel
# WARNING should be triggered.  See the commit message for details.
#
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()
{
	$ACCTON_PROG off >> $seqres.full
	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_bsd_process_accounting
_require_chattr S
_require_test
_require_scratch

# To trigger the bug we must unmount a filesystem while BSD process accounting
# is enabled.  The accounting file must also be located on a different
# filesystem and have the sync flag set.

accounting_file=$TEST_DIR/$seq

rm -f $accounting_file
touch $accounting_file
$CHATTR_PROG +S $accounting_file

_scratch_mkfs &>> $seqres.full
$ACCTON_PROG $accounting_file >> $seqres.full
_scratch_mount
_scratch_unmount
$ACCTON_PROG off >> $seqres.full

echo "Silence is golden"

status=0
exit