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QA test to demonstrate unwritten extent/mmap write problem
Merge of master-melb:xfs-cmds:28456a by kenmcd.

  mmap vs unwritten extents test.

#! /bin/sh
# FSQA Test No. 166
#
# ->page-mkwrite test - unwritten extents and mmap
#
#-----------------------------------------------------------------------
#  Copyright (c) 2007 Silicon Graphics, Inc.  All Rights Reserved.
#-----------------------------------------------------------------------
#
# creator
owner=dgc@sgi.com

seq=`basename $0`
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()
{
    _cleanup_testdir
}

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

_filter_blocks()
{
    $AWK_PROG '/[0-9]/ { print $1, $2, "XX..YY", "AG", "(AA..BB)", $6, $7 }'
}

# real QA test starts here
_supported_fs xfs
_supported_os Linux

_setup_testdir
_require_scratch
_scratch_mkfs_xfs >/dev/null 2>&1
_scratch_mount

TEST_FILE=$SCRATCH_MNT/test_file
TEST_PROG=$here/src/unwritten_mmap
FILE_SIZE=131072

rm -f $TEST_FILE
$TEST_PROG $FILE_SIZE $TEST_FILE

xfs_bmap -vp $TEST_FILE | _filter_blocks

status=0
exit