tests/f2fs/004

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2024 Oppo.  All Rights Reserved.
#
# FS QA Test No. f2fs/004
#
# Test that we will simulate race case in between sqlite atomic write
# and direct IO w/ below steps:
# 1. create a regular file, and initialize it w/ 0xff data
# 2. start transaction (via F2FS_IOC_START_ATOMIC_WRITE) on it
# 3. write transaction data
# 4. trigger direct read/write IO to check whether it fails or not
# 5. commit and end the transaction (via F2FS_IOC_COMMIT_ATOMIC_WRITE)
# This is a regression test to check handling of race condition in
# between atomic_write and direct IO.
#
. ./common/preamble
_begin_fstest auto quick punch

_cleanup()
{
	kill -9 $atomic_write_pid > /dev/null 2>&1
	wait
	cd /
	rm -r -f $tmp.*
}

_require_scratch
_require_odirect
_scratch_mkfs >> $seqres.full
_scratch_mount >> $seqres.full

dbfile=$SCRATCH_MNT/dbfile

# start atomic_write on dbfile & write data to dbfile
touch $dbfile
$F2FS_IO_PROG write 1 0 32 zero atomic_commit $dbfile 3000 >> $seqres.full &
atomic_write_pid=$!

# simulate concurrent direct read/write IO
$XFS_IO_PROG -d -c "pread 0 128k" $dbfile
$XFS_IO_PROG -d -c "pwrite 0 128k" $dbfile

# wait for atomic_write commit completion
sleep 5

status=0
exit