#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017 Liu Bo.  All Rights Reserved.
#
# FS QA Test generic/406
#
# If a larger dio write (size >= 128M) got splitted, the assertion in endio
# would complain (CONFIG_BTRFS_ASSERT is required).
#
# Regression test for
#   Btrfs: adjust outstanding_extents counter properly when dio write is split
#
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

# Modify as appropriate.
_supported_fs generic
_require_scratch
_require_odirect

_scratch_mkfs >> $seqres.full 2>&1
_scratch_mount

# 2G / 1K
blocksize=$(( (128 + 1) * 2 * 1024 * 1024))
fsblock=$(( (128 + 1) * 2 * 1024))
_require_fs_space $SCRATCH_MNT $fsblock

echo "Silence is golden"

$XFS_IO_PROG -f -d -c "pwrite -b ${blocksize} 0 ${blocksize}" $SCRATCH_MNT/testfile.$seq >> $seqres.full 2>&1

_scratch_unmount

# success, all done
status=0
exit