#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018 CTERA Networks. All Rights Reserved.
#
# FS QA Test No. 491
#
# Test first read with freeze right after mount.
#
# With ext4, this leads to freeze proection bypass WARN_ON in
# ext4_journal_check_start.
#
. ./common/preamble
_begin_fstest auto quick freeze mount

# Override the default cleanup function.
_cleanup()
{
	cd /
	# Make sure $SCRATCH_MNT is unfreezed
	xfs_freeze -u $SCRATCH_MNT 2>/dev/null
	rm -f $tmp.*
}

# Import common functions.
. ./common/filter

# real QA test starts here
_supported_fs generic
_require_scratch
_require_freeze
_require_command "$TIMEOUT_PROG" "timeout"

testfile=$SCRATCH_MNT/foo

# Create a filesystem with a file
_scratch_mkfs >>$seqres.full 2>&1
_scratch_mount
echo "frozen" > $testfile

# Mount filesystem "noatime" and freeze right after mount -
# reads should not block
_scratch_cycle_mount "noatime"
xfs_freeze -f $SCRATCH_MNT

# Read file while filesystem is frozen should succeed
# without blocking
$TIMEOUT_PROG -s KILL 5s cat $testfile

xfs_freeze -u $SCRATCH_MNT

status=0
exit