xfstests: add a new test case for ext4 indirect-based file

After applied this commit (864688d3), xfstests #255 will not test a
file system that cannot support fallocate(2), such as a indirect-based
file in ext4.  So we need to add a new generic test case to test it.

The difference between #255 and this test case is only to use pwrite to
allocate blocks.  Other filesystems should survive in this test case.
In the mean time, a new argument '-u' is added into _test_generic_punch
not to run unwritten tests.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Reviewed-by: Rich Johnston <rjohnston@sgi.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>

tests/generic/316

@@ -0,0 +1,67 @@
+#! /bin/bash
+# FS QA Test No. 316
+#
+# Test Generic fallocate hole punching w/o unwritten extent
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2013 Alibaba Group.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+#
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/punch
+
+# real QA test starts here
+_supported_fs generic
+_supported_os Linux
+
+_require_xfs_io_falloc_punch
+_require_xfs_io_fiemap
+
+testfile=$TEST_DIR/$seq.$$
+
+# Standard punch hole tests
+_test_generic_punch -u pwrite fpunch fpunch fiemap _filter_hole_fiemap $testfile
+
+# Delayed allocation punch hole tests
+_test_generic_punch -u -d pwrite fpunch fpunch fiemap _filter_hole_fiemap $testfile
+
+# Multi hole punch tests
+_test_generic_punch -u -k pwrite fpunch fpunch fiemap _filter_hole_fiemap $testfile
+
+# Delayed allocation multi punch hole tests
+_test_generic_punch -u -d -k pwrite fpunch fpunch fiemap _filter_hole_fiemap $testfile
+
+# success, all done
+status=0
+exit